Home » Eclipse Projects » GEF » Limitation in number of nodes in a graph
| Limitation in number of nodes in a graph [message #106564] |
Mon, 24 November 2003 11:13  |
Eclipse User |
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Originally posted by: smankovski-NO-SPAM-.cybermation.com
Hi All
Our application needs to generate graphs with amount of nodes in 100000 =
range.
I have modified flow example slightly to generate graphs programaticaly.=
It seems that I can not go past 2500 nodes in the graph.
This is what I get in the log for 3000 nodes
!SESSION =
------------------------------------------------------------ ----------
!ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
at org.eclipse.core.launcher.Main.run(Main.java:747)
at org.eclipse.core.launcher.Main.main(Main.java:583)
Caused by: java.lang.reflect.InvocationTargetException
at =
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader=
..java:861)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
... 7 more
Caused by: java.lang.StackOverflowError
-----------------------------
I am running vm with -Xss2M -Xms64M -Xmx512M
Does anybody have an idea why?
Does anybody use GEF with amount of nodes in 100K range?
Thanks
Serge Mankovski =
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| Re: Limitation in number of nodes in a graph [message #106581 is a reply to message #106564] |
Mon, 24 November 2003 11:49  |
| Eclipse User |
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So, you are saying that this works just fine with 2500 nodes?
I'd track what's causing the StackOverflow. Make sure there's no infinite
loop, cycle or recursion. My first guess would be that you don't have
sufficient memory for that, but then you'd get an Out of Memory exception.
If you have a heirarchical structure that's 30K deep, and you call
invalidateTree() on the root figure, there's a good chance you'll get a
stack overflow.
Try removing the min memory requirements on your VM and see if that helps.
Keep an eye on the system memory usage when running the program. See if it
actually hits 512M. Try allocating some more memory to the VM, and see if
that helps at all.
If memory consumption is the problem, I am not sure what can be done to
mitigate this problem. Some optimization is in call, of course. Maybe the
flyweight pattern will rescue you. However, going from a max of 2.5K to
100K is a tall order.
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:opry5gois4lhlh26@localhost...
Hi All
Our application needs to generate graphs with amount of nodes in 100000
range.
I have modified flow example slightly to generate graphs programaticaly.
It seems that I can not go past 2500 nodes in the graph.
This is what I get in the log for 3000 nodes
!SESSION
------------------------------------------------------------ ----------
!ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
at org.eclipse.core.launcher.Main.run(Main.java:747)
at org.eclipse.core.launcher.Main.main(Main.java:583)
Caused by: java.lang.reflect.InvocationTargetException
at
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
a:861)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
... 7 more
Caused by: java.lang.StackOverflowError
-----------------------------
I am running vm with -Xss2M -Xms64M -Xmx512M
Does anybody have an idea why?
Does anybody use GEF with amount of nodes in 100K range?
Thanks
Serge Mankovski =
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| Re: Limitation in number of nodes in a graph [message #106595 is a reply to message #106581] |
Mon, 24 November 2003 12:20 |
| Eclipse User |
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Originally posted by: smankovski-NO-SPAM-.cybermation.com
It does work with 2500 with the flat graph structure without any =
connectors.
It does not reach 512M when it runs. The highest it goes to is in upper =
300 range
Removing min memory size did not help.
There is no recursion in creation of flat structure, just a loop.
Since it gives stack overflow before it reaches upper limit of memory, i=
t =
does not seem to be a memory consumption problem.
Thank you for help
Serge
2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
> So, you are saying that this works just fine with 2500 nodes?
>
> I'd track what's causing the StackOverflow. Make sure there's no =
> infinite
> loop, cycle or recursion. My first guess would be that you don't have=
> sufficient memory for that, but then you'd get an Out of Memory =
> exception.
> If you have a heirarchical structure that's 30K deep, and you call
> invalidateTree() on the root figure, there's a good chance you'll get =
a
> stack overflow.
>
> Try removing the min memory requirements on your VM and see if that =
> helps.
> Keep an eye on the system memory usage when running the program. See =
if =
> it
> actually hits 512M. Try allocating some more memory to the VM, and se=
e =
> if
> that helps at all.
>
> If memory consumption is the problem, I am not sure what can be done t=
o
> mitigate this problem. Some optimization is in call, of course. Mayb=
e =
> the
> flyweight pattern will rescue you. However, going from a max of 2.5K =
to
> 100K is a tall order.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in messa=
ge
> news:opry5gois4lhlh26@localhost...
> Hi All
> Our application needs to generate graphs with amount of nodes in 10000=
0
> range.
> I have modified flow example slightly to generate graphs programatical=
y.
> It seems that I can not go past 2500 nodes in the graph.
>
> This is what I get in the log for 3000 nodes
>
> !SESSION
> ------------------------------------------------------------ ----------=
> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
> !MESSAGE Exception launching the Eclipse Platform:
> !STACK
> java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
> at org.eclipse.core.launcher.Main.run(Main.java:747)
> at org.eclipse.core.launcher.Main.main(Main.java:583)
> Caused by: java.lang.reflect.InvocationTargetException
> at
> org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoad=
er.jav
> a:861)
> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
> ... 7 more
> Caused by: java.lang.StackOverflowError
>
> -----------------------------
>
> I am running vm with -Xss2M -Xms64M -Xmx512M
>
> Does anybody have an idea why?
> Does anybody use GEF with amount of nodes in 100K range?
>
> Thanks
> Serge Mankovski =3D
>
>
-- =
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
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| Re: Limitation in number of nodes in a graph [message #106781 is a reply to message #106595] |
Tue, 25 November 2003 10:37 |
| Eclipse User |
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Originally posted by: none.us.ibm.com
Please post the full stack trace. thanks.
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:opry5jr9delhlh26@localhost...
It does work with 2500 with the flat graph structure without any
connectors.
It does not reach 512M when it runs. The highest it goes to is in upper
300 range
Removing min memory size did not help.
There is no recursion in creation of flat structure, just a loop.
Since it gives stack overflow before it reaches upper limit of memory, it
does not seem to be a memory consumption problem.
Thank you for help
Serge
2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
> So, you are saying that this works just fine with 2500 nodes?
>
> I'd track what's causing the StackOverflow. Make sure there's no
> infinite
> loop, cycle or recursion. My first guess would be that you don't have
> sufficient memory for that, but then you'd get an Out of Memory
> exception.
> If you have a heirarchical structure that's 30K deep, and you call
> invalidateTree() on the root figure, there's a good chance you'll get a
> stack overflow.
>
> Try removing the min memory requirements on your VM and see if that
> helps.
> Keep an eye on the system memory usage when running the program. See if
> it
> actually hits 512M. Try allocating some more memory to the VM, and see
> if
> that helps at all.
>
> If memory consumption is the problem, I am not sure what can be done to
> mitigate this problem. Some optimization is in call, of course. Maybe
> the
> flyweight pattern will rescue you. However, going from a max of 2.5K to
> 100K is a tall order.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
> news:opry5gois4lhlh26@localhost...
> Hi All
> Our application needs to generate graphs with amount of nodes in 100000
> range.
> I have modified flow example slightly to generate graphs programaticaly.
> It seems that I can not go past 2500 nodes in the graph.
>
> This is what I get in the log for 3000 nodes
>
> !SESSION
> ------------------------------------------------------------ ----------
> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
> !MESSAGE Exception launching the Eclipse Platform:
> !STACK
> java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
> at org.eclipse.core.launcher.Main.run(Main.java:747)
> at org.eclipse.core.launcher.Main.main(Main.java:583)
> Caused by: java.lang.reflect.InvocationTargetException
> at
>
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
> a:861)
> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
> ... 7 more
> Caused by: java.lang.StackOverflowError
>
> -----------------------------
>
> I am running vm with -Xss2M -Xms64M -Xmx512M
>
> Does anybody have an idea why?
> Does anybody use GEF with amount of nodes in 100K range?
>
> Thanks
> Serge Mankovski =
>
>
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
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| Re: Limitation in number of nodes in a graph [message #106830 is a reply to message #106781] |
Tue, 25 November 2003 11:07 |
| Eclipse User |
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|
|
Originally posted by: smankovski-NO-SPAM-.cybermation.com
------------APtarxL2121nm8aknEzjHo
Content-Type: text/plain; format=flowed; charset=iso-8859-15
Content-Transfer-Encoding: Quoted-Printable
Hi,
what I posted is the full stack trace as it appears in the .log file.
Eclips do not give any more information about what is going on.
In the attachment is the message that appears in the workbench.
!SESSION Nov 25, 2003 10:54:09.587 =
---------------------------------------------
java.version=3D1.4.2_01
java.vendor=3DSun Microsystems Inc.
BootLoader constants: OS=3Dwin32, ARCH=3Dx86, WS=3Dwin32, NL=3Den_US
Command-line arguments: -pdelaunch -dev bin -feature org.eclipse.platfor=
m =
-data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86 -=
nl =
en_US -configuration file:C:/eclipse =
2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse =
2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
!ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
!MESSAGE Unable to restore editor - createElement returned null for inpu=
t =
element factory: org.eclipse.ui.part.FileEditorInputFactory
!ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
!MESSAGE Unhandled exception caught in event loop.
!ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
!MESSAGE java.lang.StackOverflowError
!STACK 0
java.lang.StackOverflowError
---------------------------------------------
This is console output
Unable to restore editor - createElement returned null for input element=
=
factory: org.eclipse.ui.part.FileEditorInputFactory
Unhandled exception caught in event loop.
Reason:
java.lang.StackOverflowError
--------------------------------------------
This is the source code that I use to generate .flow file with 3000 node=
s
public class FlowWizardPage1 extends WizardNewFileCreationPage {
......
private ActivityDiagram createWakeupModel() {
ActivityDiagram diagram =3D new ActivityDiagram();
StringTokenizer tokenizer =3D new StringTokenizer(getFileName(), " xX."=
);
String chartType =3D tokenizer.nextToken();
if (chartType.equalsIgnoreCase("flat")) {
int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
for (int i =3D 0; i <=3D maxNodeCount; i++)
diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount=
));
} =
if (chartType.equalsIgnoreCase("pipe")) {
int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
Activity previous =3D null;
for (int i =3D 0; i <=3D maxNodeCount; i++) {
Activity current =3D new Activity("Node " + i + " out of " =
+ maxNodeCount);
diagram.addChild(current);
if (i > 0)
new Transition(previous, current);
previous =3D current;
}
} =
return diagram;
}
.......
}
File name that I use in case 3000 nodes is "flat 3000.flow
---------------------
Serge
On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> wrote=
:
> Please post the full stack trace. thanks.
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in messa=
ge
> news:opry5jr9delhlh26@localhost...
> It does work with 2500 with the flat graph structure without any
> connectors.
>
> It does not reach 512M when it runs. The highest it goes to is in uppe=
r
> 300 range
>
> Removing min memory size did not help.
>
> There is no recursion in creation of flat structure, just a loop.
>
> Since it gives stack overflow before it reaches upper limit of memory,=
it
> does not seem to be a memory consumption problem.
>
> Thank you for help
> Serge
>
> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>
>> So, you are saying that this works just fine with 2500 nodes?
>>
>> I'd track what's causing the StackOverflow. Make sure there's no
>> infinite
>> loop, cycle or recursion. My first guess would be that you don't hav=
e
>> sufficient memory for that, but then you'd get an Out of Memory
>> exception.
>> If you have a heirarchical structure that's 30K deep, and you call
>> invalidateTree() on the root figure, there's a good chance you'll get=
a
>> stack overflow.
>>
>> Try removing the min memory requirements on your VM and see if that
>> helps.
>> Keep an eye on the system memory usage when running the program. See=
if
>> it
>> actually hits 512M. Try allocating some more memory to the VM, and s=
ee
>> if
>> that helps at all.
>>
>> If memory consumption is the problem, I am not sure what can be done =
to
>> mitigate this problem. Some optimization is in call, of course. May=
be
>> the
>> flyweight pattern will rescue you. However, going from a max of 2.5K=
to
>> 100K is a tall order.
>>
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in mess=
age
>> news:opry5gois4lhlh26@localhost...
>> Hi All
>> Our application needs to generate graphs with amount of nodes in 1000=
00
>> range.
>> I have modified flow example slightly to generate graphs programatica=
ly.
>> It seems that I can not go past 2500 nodes in the graph.
>>
>> This is what I get in the log for 3000 nodes
>>
>> !SESSION
>> ------------------------------------------------------------ ---------=
-
>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>> !MESSAGE Exception launching the Eclipse Platform:
>> !STACK
>> java.lang.reflect.InvocationTargetException
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>> at java.lang.reflect.Method.invoke(Unknown Source)
>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>> Caused by: java.lang.reflect.InvocationTargetException
>> at
>>
> org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoad=
er.jav
>> a:861)
>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>> ... 7 more
>> Caused by: java.lang.StackOverflowError
>>
>> -----------------------------
>>
>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>
>> Does anybody have an idea why?
>> Does anybody use GEF with amount of nodes in 100K range?
>>
>> Thanks
>> Serge Mankovski =3D
>>
>>
>
>
>
-- =
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
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|
|
|
| Re: Limitation in number of nodes in a graph [message #106891 is a reply to message #106830] |
Tue, 25 November 2003 14:07 |
| Eclipse User |
|
|
|
Alright, I tried it out on my computer. Serge, you were right. Scalability
in GEF (I was able to create a large Logic Diagram with 10K nodes -- working
on 100K now) or memory usage are not a problem (although performance
certainly is -- with 100K nodes, my computer has been pegged at 100% for
more than half an hour now, and it's not done yet!).
I found the problem when I tried to create a Flow Example with 5000
activities. Here it is:
at
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
kAssigmentSolver.java:30)
at
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
kAssigmentSolver.java:30)
at
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
kAssigmentSolver.java:30)
at
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
kAssigmentSolver.java:30)
java.lang.StackOverflowError
RankAssignmentSolver.depthFirstCutValue has a recursive call that goes
through all the edges of all the nodes.
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:opry7a3kt9lhlh26@localhost...
Hi,
what I posted is the full stack trace as it appears in the .log file.
Eclips do not give any more information about what is going on.
In the attachment is the message that appears in the workbench.
!SESSION Nov 25, 2003 10:54:09.587
---------------------------------------------
java.version=1.4.2_01
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -pdelaunch -dev bin -feature org.eclipse.platform
-data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86 -nl
en_US -configuration file:C:/eclipse
2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
!ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
!MESSAGE Unable to restore editor - createElement returned null for input
element factory: org.eclipse.ui.part.FileEditorInputFactory
!ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
!MESSAGE Unhandled exception caught in event loop.
!ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
!MESSAGE java.lang.StackOverflowError
!STACK 0
java.lang.StackOverflowError
---------------------------------------------
This is console output
Unable to restore editor - createElement returned null for input element
factory: org.eclipse.ui.part.FileEditorInputFactory
Unhandled exception caught in event loop.
Reason:
java.lang.StackOverflowError
--------------------------------------------
This is the source code that I use to generate .flow file with 3000 nodes
public class FlowWizardPage1 extends WizardNewFileCreationPage {
......
private ActivityDiagram createWakeupModel() {
ActivityDiagram diagram = new ActivityDiagram();
StringTokenizer tokenizer = new StringTokenizer(getFileName(), " xX.");
String chartType = tokenizer.nextToken();
if (chartType.equalsIgnoreCase("flat")) {
int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
for (int i = 0; i <= maxNodeCount; i++)
diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount));
}
if (chartType.equalsIgnoreCase("pipe")) {
int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
Activity previous = null;
for (int i = 0; i <= maxNodeCount; i++) {
Activity current = new Activity("Node " + i + " out of "
+ maxNodeCount);
diagram.addChild(current);
if (i > 0)
new Transition(previous, current);
previous = current;
}
}
return diagram;
}
.......
}
File name that I use in case 3000 nodes is "flat 3000.flow
---------------------
Serge
On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> wrote:
> Please post the full stack trace. thanks.
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
> news:opry5jr9delhlh26@localhost...
> It does work with 2500 with the flat graph structure without any
> connectors.
>
> It does not reach 512M when it runs. The highest it goes to is in upper
> 300 range
>
> Removing min memory size did not help.
>
> There is no recursion in creation of flat structure, just a loop.
>
> Since it gives stack overflow before it reaches upper limit of memory, it
> does not seem to be a memory consumption problem.
>
> Thank you for help
> Serge
>
> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>
>> So, you are saying that this works just fine with 2500 nodes?
>>
>> I'd track what's causing the StackOverflow. Make sure there's no
>> infinite
>> loop, cycle or recursion. My first guess would be that you don't have
>> sufficient memory for that, but then you'd get an Out of Memory
>> exception.
>> If you have a heirarchical structure that's 30K deep, and you call
>> invalidateTree() on the root figure, there's a good chance you'll get a
>> stack overflow.
>>
>> Try removing the min memory requirements on your VM and see if that
>> helps.
>> Keep an eye on the system memory usage when running the program. See if
>> it
>> actually hits 512M. Try allocating some more memory to the VM, and see
>> if
>> that helps at all.
>>
>> If memory consumption is the problem, I am not sure what can be done to
>> mitigate this problem. Some optimization is in call, of course. Maybe
>> the
>> flyweight pattern will rescue you. However, going from a max of 2.5K to
>> 100K is a tall order.
>>
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
>> news:opry5gois4lhlh26@localhost...
>> Hi All
>> Our application needs to generate graphs with amount of nodes in 100000
>> range.
>> I have modified flow example slightly to generate graphs programaticaly.
>> It seems that I can not go past 2500 nodes in the graph.
>>
>> This is what I get in the log for 3000 nodes
>>
>> !SESSION
>> ------------------------------------------------------------ ----------
>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>> !MESSAGE Exception launching the Eclipse Platform:
>> !STACK
>> java.lang.reflect.InvocationTargetException
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>> at java.lang.reflect.Method.invoke(Unknown Source)
>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>> Caused by: java.lang.reflect.InvocationTargetException
>> at
>>
>
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
>> a:861)
>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>> ... 7 more
>> Caused by: java.lang.StackOverflowError
>>
>> -----------------------------
>>
>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>
>> Does anybody have an idea why?
>> Does anybody use GEF with amount of nodes in 100K range?
>>
>> Thanks
>> Serge Mankovski =
>>
>>
>
>
>
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #107266 is a reply to message #106891] |
Thu, 27 November 2003 13:49 |
| Eclipse User |
|
|
|
Originally posted by: smankovski-NO-SPAM-.cybermation.com
Pratik,
Do you think that case with the RankAssigmentSolver can be entered as a =
bug in the bug database so that it might get solved at some point? It =
seems that we need is to substitute recursion by iteration. I could look=
=
at this issue if I had a bit more date about the purpose of this method =
and the structure of the tree it works on.
I suppose performance issue can not be resolved without major re-work. I=
f =
it can be solved at all.
Serge
On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com> wrot=
e:
> Alright, I tried it out on my computer. Serge, you were right. =
> Scalability
> in GEF (I was able to create a large Logic Diagram with 10K nodes -- =
> working
> on 100K now) or memory usage are not a problem (although performance
> certainly is -- with 100K nodes, my computer has been pegged at 100% f=
or
> more than half an hour now, and it's not done yet!).
>
> I found the problem when I tried to create a Flow Example with 5000
> activities. Here it is:
> at
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
> kAssigmentSolver.java:30)
>
> at
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
> kAssigmentSolver.java:30)
>
> at
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
> kAssigmentSolver.java:30)
>
> at
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
> kAssigmentSolver.java:30)
>
> java.lang.StackOverflowError
>
> RankAssignmentSolver.depthFirstCutValue has a recursive call that goes=
> through all the edges of all the nodes.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in messa=
ge
> news:opry7a3kt9lhlh26@localhost...
> Hi,
> what I posted is the full stack trace as it appears in the .log file.
> Eclips do not give any more information about what is going on.
>
> In the attachment is the message that appears in the workbench.
>
>
> !SESSION Nov 25, 2003 10:54:09.587
> ---------------------------------------------
> java.version=3D1.4.2_01
> java.vendor=3DSun Microsystems Inc.
> BootLoader constants: OS=3Dwin32, ARCH=3Dx86, WS=3Dwin32, NL=3Den_US
> Command-line arguments: -pdelaunch -dev bin -feature org.eclipse.platf=
orm
> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86=
=
> -nl
> en_US -configuration file:C:/eclipse
> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
> !MESSAGE Unable to restore editor - createElement returned null for in=
put
> element factory: org.eclipse.ui.part.FileEditorInputFactory
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
> !MESSAGE Unhandled exception caught in event loop.
> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
> !MESSAGE java.lang.StackOverflowError
> !STACK 0
> java.lang.StackOverflowError
>
> ---------------------------------------------
>
> This is console output
>
> Unable to restore editor - createElement returned null for input eleme=
nt
> factory: org.eclipse.ui.part.FileEditorInputFactory
> Unhandled exception caught in event loop.
> Reason:
> java.lang.StackOverflowError
>
> --------------------------------------------
>
> This is the source code that I use to generate .flow file with 3000 no=
des
>
> public class FlowWizardPage1 extends WizardNewFileCreationPage {
> .....
>
> private ActivityDiagram createWakeupModel() {
> ActivityDiagram diagram =3D new ActivityDiagram();
> StringTokenizer tokenizer =3D new StringTokenizer(getFileName(), " xX.=
");
> String chartType =3D tokenizer.nextToken();
> if (chartType.equalsIgnoreCase("flat")) {
> int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
> for (int i =3D 0; i <=3D maxNodeCount; i++)
> diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount)=
);
> }
> if (chartType.equalsIgnoreCase("pipe")) {
> int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
> Activity previous =3D null;
> for (int i =3D 0; i <=3D maxNodeCount; i++) {
> Activity current =3D new Activity("Node " + i + " out of "
> + maxNodeCount);
> diagram.addChild(current);
> if (i > 0)
> new Transition(previous, current);
> previous =3D current;
> }
> }
> return diagram;
> }
>
> ......
> }
>
>
> File name that I use in case 3000 nodes is "flat 3000.flow
>
> ---------------------
>
>
> Serge
>
> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> wro=
te:
>
>> Please post the full stack trace. thanks.
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in mess=
age
>> news:opry5jr9delhlh26@localhost...
>> It does work with 2500 with the flat graph structure without any
>> connectors.
>>
>> It does not reach 512M when it runs. The highest it goes to is in upp=
er
>> 300 range
>>
>> Removing min memory size did not help.
>>
>> There is no recursion in creation of flat structure, just a loop.
>>
>> Since it gives stack overflow before it reaches upper limit of memory=
, =
>> it
>> does not seem to be a memory consumption problem.
>>
>> Thank you for help
>> Serge
>>
>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>
>>> So, you are saying that this works just fine with 2500 nodes?
>>>
>>> I'd track what's causing the StackOverflow. Make sure there's no
>>> infinite
>>> loop, cycle or recursion. My first guess would be that you don't ha=
ve
>>> sufficient memory for that, but then you'd get an Out of Memory
>>> exception.
>>> If you have a heirarchical structure that's 30K deep, and you call
>>> invalidateTree() on the root figure, there's a good chance you'll ge=
t a
>>> stack overflow.
>>>
>>> Try removing the min memory requirements on your VM and see if that
>>> helps.
>>> Keep an eye on the system memory usage when running the program. Se=
e =
>>> if
>>> it
>>> actually hits 512M. Try allocating some more memory to the VM, and =
see
>>> if
>>> that helps at all.
>>>
>>> If memory consumption is the problem, I am not sure what can be done=
to
>>> mitigate this problem. Some optimization is in call, of course. Ma=
ybe
>>> the
>>> flyweight pattern will rescue you. However, going from a max of 2.5=
K =
>>> to
>>> 100K is a tall order.
>>>
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in =
>>> message
>>> news:opry5gois4lhlh26@localhost...
>>> Hi All
>>> Our application needs to generate graphs with amount of nodes in 100=
000
>>> range.
>>> I have modified flow example slightly to generate graphs =
>>> programaticaly.
>>> It seems that I can not go past 2500 nodes in the graph.
>>>
>>> This is what I get in the log for 3000 nodes
>>>
>>> !SESSION
>>> ------------------------------------------------------------ --------=
--
>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>> !MESSAGE Exception launching the Eclipse Platform:
>>> !STACK
>>> java.lang.reflect.InvocationTargetException
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)=
>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>> Caused by: java.lang.reflect.InvocationTargetException
>>> at
>>>
>>
> org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoad=
er.jav
>>> a:861)
>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>> ... 7 more
>>> Caused by: java.lang.StackOverflowError
>>>
>>> -----------------------------
>>>
>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>
>>> Does anybody have an idea why?
>>> Does anybody use GEF with amount of nodes in 100K range?
>>>
>>> Thanks
>>> Serge Mankovski =3D
>>>
>>>
>>
>>
>>
>
>
>
-- =
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #107498 is a reply to message #107266] |
Mon, 01 December 2003 00:22 |
| Eclipse User |
|
|
|
Serge, unfortunately, GEF has no intention to support scalability to the
extent that you are looking for. It never had. You are right: trying to
support that level of scalability would require quite a bit of re-work
(although I think it's doable). However, you can go ahead and open up a
defect against RankAssignmentSolver.depthFirstCutValue() (albeit I don't
think it will be addressed anytime in the near future).
Creating a logic diagram that's 5500 x 5500 inches and has 100K LEDs takes
forever to come up. Although we've made a few optimizations that reduces
that time considerably, it still takes a very long time (a few minutes).
Unfortunately, that's as far as we can go to help you, at least for the
moment.
Pratik Shah
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:oprza7w7tulhlh26@localhost...
Pratik,
Do you think that case with the RankAssigmentSolver can be entered as a
bug in the bug database so that it might get solved at some point? It
seems that we need is to substitute recursion by iteration. I could look
at this issue if I had a bit more date about the purpose of this method
and the structure of the tree it works on.
I suppose performance issue can not be resolved without major re-work. If
it can be solved at all.
Serge
On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
> Alright, I tried it out on my computer. Serge, you were right.
> Scalability
> in GEF (I was able to create a large Logic Diagram with 10K nodes --
> working
> on 100K now) or memory usage are not a problem (although performance
> certainly is -- with 100K nodes, my computer has been pegged at 100% for
> more than half an hour now, and it's not done yet!).
>
> I found the problem when I tried to create a Flow Example with 5000
> activities. Here it is:
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> java.lang.StackOverflowError
>
> RankAssignmentSolver.depthFirstCutValue has a recursive call that goes
> through all the edges of all the nodes.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
> news:opry7a3kt9lhlh26@localhost...
> Hi,
> what I posted is the full stack trace as it appears in the .log file.
> Eclips do not give any more information about what is going on.
>
> In the attachment is the message that appears in the workbench.
>
>
> !SESSION Nov 25, 2003 10:54:09.587
> ---------------------------------------------
> java.version=1.4.2_01
> java.vendor=Sun Microsystems Inc.
> BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
> Command-line arguments: -pdelaunch -dev bin -feature org.eclipse.platform
> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86
> -nl
> en_US -configuration file:C:/eclipse
> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
> !MESSAGE Unable to restore editor - createElement returned null for input
> element factory: org.eclipse.ui.part.FileEditorInputFactory
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
> !MESSAGE Unhandled exception caught in event loop.
> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
> !MESSAGE java.lang.StackOverflowError
> !STACK 0
> java.lang.StackOverflowError
>
> ---------------------------------------------
>
> This is console output
>
> Unable to restore editor - createElement returned null for input element
> factory: org.eclipse.ui.part.FileEditorInputFactory
> Unhandled exception caught in event loop.
> Reason:
> java.lang.StackOverflowError
>
> --------------------------------------------
>
> This is the source code that I use to generate .flow file with 3000 nodes
>
> public class FlowWizardPage1 extends WizardNewFileCreationPage {
> .....
>
> private ActivityDiagram createWakeupModel() {
> ActivityDiagram diagram = new ActivityDiagram();
> StringTokenizer tokenizer = new StringTokenizer(getFileName(), " xX.");
> String chartType = tokenizer.nextToken();
> if (chartType.equalsIgnoreCase("flat")) {
> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
> for (int i = 0; i <= maxNodeCount; i++)
> diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount));
> }
> if (chartType.equalsIgnoreCase("pipe")) {
> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
> Activity previous = null;
> for (int i = 0; i <= maxNodeCount; i++) {
> Activity current = new Activity("Node " + i + " out of "
> + maxNodeCount);
> diagram.addChild(current);
> if (i > 0)
> new Transition(previous, current);
> previous = current;
> }
> }
> return diagram;
> }
>
> ......
> }
>
>
> File name that I use in case 3000 nodes is "flat 3000.flow
>
> ---------------------
>
>
> Serge
>
> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> wrote:
>
>> Please post the full stack trace. thanks.
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
>> news:opry5jr9delhlh26@localhost...
>> It does work with 2500 with the flat graph structure without any
>> connectors.
>>
>> It does not reach 512M when it runs. The highest it goes to is in upper
>> 300 range
>>
>> Removing min memory size did not help.
>>
>> There is no recursion in creation of flat structure, just a loop.
>>
>> Since it gives stack overflow before it reaches upper limit of memory,
>> it
>> does not seem to be a memory consumption problem.
>>
>> Thank you for help
>> Serge
>>
>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>
>>> So, you are saying that this works just fine with 2500 nodes?
>>>
>>> I'd track what's causing the StackOverflow. Make sure there's no
>>> infinite
>>> loop, cycle or recursion. My first guess would be that you don't have
>>> sufficient memory for that, but then you'd get an Out of Memory
>>> exception.
>>> If you have a heirarchical structure that's 30K deep, and you call
>>> invalidateTree() on the root figure, there's a good chance you'll get a
>>> stack overflow.
>>>
>>> Try removing the min memory requirements on your VM and see if that
>>> helps.
>>> Keep an eye on the system memory usage when running the program. See
>>> if
>>> it
>>> actually hits 512M. Try allocating some more memory to the VM, and see
>>> if
>>> that helps at all.
>>>
>>> If memory consumption is the problem, I am not sure what can be done to
>>> mitigate this problem. Some optimization is in call, of course. Maybe
>>> the
>>> flyweight pattern will rescue you. However, going from a max of 2.5K
>>> to
>>> 100K is a tall order.
>>>
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>> message
>>> news:opry5gois4lhlh26@localhost...
>>> Hi All
>>> Our application needs to generate graphs with amount of nodes in 100000
>>> range.
>>> I have modified flow example slightly to generate graphs
>>> programaticaly.
>>> It seems that I can not go past 2500 nodes in the graph.
>>>
>>> This is what I get in the log for 3000 nodes
>>>
>>> !SESSION
>>> ------------------------------------------------------------ ----------
>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>> !MESSAGE Exception launching the Eclipse Platform:
>>> !STACK
>>> java.lang.reflect.InvocationTargetException
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>> Caused by: java.lang.reflect.InvocationTargetException
>>> at
>>>
>>
>
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
>>> a:861)
>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>> ... 7 more
>>> Caused by: java.lang.StackOverflowError
>>>
>>> -----------------------------
>>>
>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>
>>> Does anybody have an idea why?
>>> Does anybody use GEF with amount of nodes in 100K range?
>>>
>>> Thanks
>>> Serge Mankovski =
>>>
>>>
>>
>>
>>
>
>
>
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #107541 is a reply to message #107266] |
Mon, 01 December 2003 19:49 |
| Eclipse User |
|
|
|
Originally posted by: none.us.ibm.com
The algorithm creates a spanning tree over the directed graph. Once the
spanning tree has been created, it chooses an arbitrary root for the tree,
and the performs a depth first traversal implemented using recursion.
You test graph is an extreme case. It is just one long chain of nodes. Is
you application limited to these types of "graphs"? What is the real world
scenario in which you encounter the overflow?
I think that removing the recursion would be pretty simple in this case.
Would you like to attempt to provide a patch which is not recursive? For
more information about the algorithm, see
http://citeseer.nj.nec.com/gansner93technique.html
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:oprza7w7tulhlh26@localhost...
Pratik,
Do you think that case with the RankAssigmentSolver can be entered as a
bug in the bug database so that it might get solved at some point? It
seems that we need is to substitute recursion by iteration. I could look
at this issue if I had a bit more date about the purpose of this method
and the structure of the tree it works on.
I suppose performance issue can not be resolved without major re-work. If
it can be solved at all.
Serge
On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
> Alright, I tried it out on my computer. Serge, you were right.
> Scalability
> in GEF (I was able to create a large Logic Diagram with 10K nodes --
> working
> on 100K now) or memory usage are not a problem (although performance
> certainly is -- with 100K nodes, my computer has been pegged at 100% for
> more than half an hour now, and it's not done yet!).
>
> I found the problem when I tried to create a Flow Example with 5000
> activities. Here it is:
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> java.lang.StackOverflowError
>
> RankAssignmentSolver.depthFirstCutValue has a recursive call that goes
> through all the edges of all the nodes.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
> news:opry7a3kt9lhlh26@localhost...
> Hi,
> what I posted is the full stack trace as it appears in the .log file.
> Eclips do not give any more information about what is going on.
>
> In the attachment is the message that appears in the workbench.
>
>
> !SESSION Nov 25, 2003 10:54:09.587
> ---------------------------------------------
> java.version=1.4.2_01
> java.vendor=Sun Microsystems Inc.
> BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
> Command-line arguments: -pdelaunch -dev bin -feature org.eclipse.platform
> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86
> -nl
> en_US -configuration file:C:/eclipse
> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
> !MESSAGE Unable to restore editor - createElement returned null for input
> element factory: org.eclipse.ui.part.FileEditorInputFactory
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
> !MESSAGE Unhandled exception caught in event loop.
> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
> !MESSAGE java.lang.StackOverflowError
> !STACK 0
> java.lang.StackOverflowError
>
> ---------------------------------------------
>
> This is console output
>
> Unable to restore editor - createElement returned null for input element
> factory: org.eclipse.ui.part.FileEditorInputFactory
> Unhandled exception caught in event loop.
> Reason:
> java.lang.StackOverflowError
>
> --------------------------------------------
>
> This is the source code that I use to generate .flow file with 3000 nodes
>
> public class FlowWizardPage1 extends WizardNewFileCreationPage {
> .....
>
> private ActivityDiagram createWakeupModel() {
> ActivityDiagram diagram = new ActivityDiagram();
> StringTokenizer tokenizer = new StringTokenizer(getFileName(), " xX.");
> String chartType = tokenizer.nextToken();
> if (chartType.equalsIgnoreCase("flat")) {
> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
> for (int i = 0; i <= maxNodeCount; i++)
> diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount));
> }
> if (chartType.equalsIgnoreCase("pipe")) {
> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
> Activity previous = null;
> for (int i = 0; i <= maxNodeCount; i++) {
> Activity current = new Activity("Node " + i + " out of "
> + maxNodeCount);
> diagram.addChild(current);
> if (i > 0)
> new Transition(previous, current);
> previous = current;
> }
> }
> return diagram;
> }
>
> ......
> }
>
>
> File name that I use in case 3000 nodes is "flat 3000.flow
>
> ---------------------
>
>
> Serge
>
> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> wrote:
>
>> Please post the full stack trace. thanks.
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
>> news:opry5jr9delhlh26@localhost...
>> It does work with 2500 with the flat graph structure without any
>> connectors.
>>
>> It does not reach 512M when it runs. The highest it goes to is in upper
>> 300 range
>>
>> Removing min memory size did not help.
>>
>> There is no recursion in creation of flat structure, just a loop.
>>
>> Since it gives stack overflow before it reaches upper limit of memory,
>> it
>> does not seem to be a memory consumption problem.
>>
>> Thank you for help
>> Serge
>>
>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>
>>> So, you are saying that this works just fine with 2500 nodes?
>>>
>>> I'd track what's causing the StackOverflow. Make sure there's no
>>> infinite
>>> loop, cycle or recursion. My first guess would be that you don't have
>>> sufficient memory for that, but then you'd get an Out of Memory
>>> exception.
>>> If you have a heirarchical structure that's 30K deep, and you call
>>> invalidateTree() on the root figure, there's a good chance you'll get a
>>> stack overflow.
>>>
>>> Try removing the min memory requirements on your VM and see if that
>>> helps.
>>> Keep an eye on the system memory usage when running the program. See
>>> if
>>> it
>>> actually hits 512M. Try allocating some more memory to the VM, and see
>>> if
>>> that helps at all.
>>>
>>> If memory consumption is the problem, I am not sure what can be done to
>>> mitigate this problem. Some optimization is in call, of course. Maybe
>>> the
>>> flyweight pattern will rescue you. However, going from a max of 2.5K
>>> to
>>> 100K is a tall order.
>>>
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>> message
>>> news:opry5gois4lhlh26@localhost...
>>> Hi All
>>> Our application needs to generate graphs with amount of nodes in 100000
>>> range.
>>> I have modified flow example slightly to generate graphs
>>> programaticaly.
>>> It seems that I can not go past 2500 nodes in the graph.
>>>
>>> This is what I get in the log for 3000 nodes
>>>
>>> !SESSION
>>> ------------------------------------------------------------ ----------
>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>> !MESSAGE Exception launching the Eclipse Platform:
>>> !STACK
>>> java.lang.reflect.InvocationTargetException
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>> Caused by: java.lang.reflect.InvocationTargetException
>>> at
>>>
>>
>
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
>>> a:861)
>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>> ... 7 more
>>> Caused by: java.lang.StackOverflowError
>>>
>>> -----------------------------
>>>
>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>
>>> Does anybody have an idea why?
>>> Does anybody use GEF with amount of nodes in 100K range?
>>>
>>> Thanks
>>> Serge Mankovski =
>>>
>>>
>>
>>
>>
>
>
>
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #107973 is a reply to message #107266] |
Thu, 04 December 2003 17:09 |
| Eclipse User |
|
|
|
We've realized that one of the largest bottlenecks for creating a diagram
with a large number of nodes is the ArrayList.contains() method. We intend
to fix the code so that that method is invoked only when absolutely
necessary. See: https://bugs.eclipse.org/bugs/show_bug.cgi?id=48099
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:oprza7w7tulhlh26@localhost...
Pratik,
Do you think that case with the RankAssigmentSolver can be entered as a
bug in the bug database so that it might get solved at some point? It
seems that we need is to substitute recursion by iteration. I could look
at this issue if I had a bit more date about the purpose of this method
and the structure of the tree it works on.
I suppose performance issue can not be resolved without major re-work. If
it can be solved at all.
Serge
On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
> Alright, I tried it out on my computer. Serge, you were right.
> Scalability
> in GEF (I was able to create a large Logic Diagram with 10K nodes --
> working
> on 100K now) or memory usage are not a problem (although performance
> certainly is -- with 100K nodes, my computer has been pegged at 100% for
> more than half an hour now, and it's not done yet!).
>
> I found the problem when I tried to create a Flow Example with 5000
> activities. Here it is:
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> at
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
> kAssigmentSolver.java:30)
>
> java.lang.StackOverflowError
>
> RankAssignmentSolver.depthFirstCutValue has a recursive call that goes
> through all the edges of all the nodes.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
> news:opry7a3kt9lhlh26@localhost...
> Hi,
> what I posted is the full stack trace as it appears in the .log file.
> Eclips do not give any more information about what is going on.
>
> In the attachment is the message that appears in the workbench.
>
>
> !SESSION Nov 25, 2003 10:54:09.587
> ---------------------------------------------
> java.version=1.4.2_01
> java.vendor=Sun Microsystems Inc.
> BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
> Command-line arguments: -pdelaunch -dev bin -feature org.eclipse.platform
> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86
> -nl
> en_US -configuration file:C:/eclipse
> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
> !MESSAGE Unable to restore editor - createElement returned null for input
> element factory: org.eclipse.ui.part.FileEditorInputFactory
> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
> !MESSAGE Unhandled exception caught in event loop.
> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
> !MESSAGE java.lang.StackOverflowError
> !STACK 0
> java.lang.StackOverflowError
>
> ---------------------------------------------
>
> This is console output
>
> Unable to restore editor - createElement returned null for input element
> factory: org.eclipse.ui.part.FileEditorInputFactory
> Unhandled exception caught in event loop.
> Reason:
> java.lang.StackOverflowError
>
> --------------------------------------------
>
> This is the source code that I use to generate .flow file with 3000 nodes
>
> public class FlowWizardPage1 extends WizardNewFileCreationPage {
> .....
>
> private ActivityDiagram createWakeupModel() {
> ActivityDiagram diagram = new ActivityDiagram();
> StringTokenizer tokenizer = new StringTokenizer(getFileName(), " xX.");
> String chartType = tokenizer.nextToken();
> if (chartType.equalsIgnoreCase("flat")) {
> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
> for (int i = 0; i <= maxNodeCount; i++)
> diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount));
> }
> if (chartType.equalsIgnoreCase("pipe")) {
> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
> Activity previous = null;
> for (int i = 0; i <= maxNodeCount; i++) {
> Activity current = new Activity("Node " + i + " out of "
> + maxNodeCount);
> diagram.addChild(current);
> if (i > 0)
> new Transition(previous, current);
> previous = current;
> }
> }
> return diagram;
> }
>
> ......
> }
>
>
> File name that I use in case 3000 nodes is "flat 3000.flow
>
> ---------------------
>
>
> Serge
>
> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> wrote:
>
>> Please post the full stack trace. thanks.
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
>> news:opry5jr9delhlh26@localhost...
>> It does work with 2500 with the flat graph structure without any
>> connectors.
>>
>> It does not reach 512M when it runs. The highest it goes to is in upper
>> 300 range
>>
>> Removing min memory size did not help.
>>
>> There is no recursion in creation of flat structure, just a loop.
>>
>> Since it gives stack overflow before it reaches upper limit of memory,
>> it
>> does not seem to be a memory consumption problem.
>>
>> Thank you for help
>> Serge
>>
>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>
>>> So, you are saying that this works just fine with 2500 nodes?
>>>
>>> I'd track what's causing the StackOverflow. Make sure there's no
>>> infinite
>>> loop, cycle or recursion. My first guess would be that you don't have
>>> sufficient memory for that, but then you'd get an Out of Memory
>>> exception.
>>> If you have a heirarchical structure that's 30K deep, and you call
>>> invalidateTree() on the root figure, there's a good chance you'll get a
>>> stack overflow.
>>>
>>> Try removing the min memory requirements on your VM and see if that
>>> helps.
>>> Keep an eye on the system memory usage when running the program. See
>>> if
>>> it
>>> actually hits 512M. Try allocating some more memory to the VM, and see
>>> if
>>> that helps at all.
>>>
>>> If memory consumption is the problem, I am not sure what can be done to
>>> mitigate this problem. Some optimization is in call, of course. Maybe
>>> the
>>> flyweight pattern will rescue you. However, going from a max of 2.5K
>>> to
>>> 100K is a tall order.
>>>
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>> message
>>> news:opry5gois4lhlh26@localhost...
>>> Hi All
>>> Our application needs to generate graphs with amount of nodes in 100000
>>> range.
>>> I have modified flow example slightly to generate graphs
>>> programaticaly.
>>> It seems that I can not go past 2500 nodes in the graph.
>>>
>>> This is what I get in the log for 3000 nodes
>>>
>>> !SESSION
>>> ------------------------------------------------------------ ----------
>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>> !MESSAGE Exception launching the Eclipse Platform:
>>> !STACK
>>> java.lang.reflect.InvocationTargetException
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>> Caused by: java.lang.reflect.InvocationTargetException
>>> at
>>>
>>
>
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
>>> a:861)
>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>> ... 7 more
>>> Caused by: java.lang.StackOverflowError
>>>
>>> -----------------------------
>>>
>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>
>>> Does anybody have an idea why?
>>> Does anybody use GEF with amount of nodes in 100K range?
>>>
>>> Thanks
>>> Serge Mankovski =
>>>
>>>
>>
>>
>>
>
>
>
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #108800 is a reply to message #107541] |
Wed, 10 December 2003 15:32 |
| Eclipse User |
|
|
|
Originally posted by: smankovski-NO-SPAM-.cybermation.com
Randy and Pratik
We decided not to build 100K sized graphs. However we still need to be =
able to build graphs in 10-25K nodes range.
This means that I will be spending some time and do optimization and fix=
es =
that we are talking about here. It might happen early next year.
Thank you for you help.
I will probably ask more questions when I start implementing the fixes.
Serge
On Mon, 1 Dec 2003 19:49:33 -0500, Randy Hudson <none@us.ibm.com> wrote:=
> The algorithm creates a spanning tree over the directed graph. Once t=
he
> spanning tree has been created, it chooses an arbitrary root for the =
> tree,
> and the performs a depth first traversal implemented using recursion.
>
> You test graph is an extreme case. It is just one long chain of nodes=
.. =
> Is
> you application limited to these types of "graphs"? What is the real =
> world
> scenario in which you encounter the overflow?
>
> I think that removing the recursion would be pretty simple in this cas=
e.
> Would you like to attempt to provide a patch which is not recursive? =
For
> more information about the algorithm, see
> http://citeseer.nj.nec.com/gansner93technique.html
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in messa=
ge
> news:oprza7w7tulhlh26@localhost...
> Pratik,
> Do you think that case with the RankAssigmentSolver can be entered as =
a
> bug in the bug database so that it might get solved at some point? It
> seems that we need is to substitute recursion by iteration. I could lo=
ok
> at this issue if I had a bit more date about the purpose of this metho=
d
> and the structure of the tree it works on.
>
> I suppose performance issue can not be resolved without major re-work.=
If
> it can be solved at all.
>
> Serge
>
>
> On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com> =
> wrote:
>
>> Alright, I tried it out on my computer. Serge, you were right.
>> Scalability
>> in GEF (I was able to create a large Logic Diagram with 10K nodes --
>> working
>> on 100K now) or memory usage are not a problem (although performance
>> certainly is -- with 100K nodes, my computer has been pegged at 100% =
for
>> more than half an hour now, and it's not done yet!).
>>
>> I found the problem when I tried to create a Flow Example with 5000
>> activities. Here it is:
>> at
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>> kAssigmentSolver.java:30)
>>
>> at
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>> kAssigmentSolver.java:30)
>>
>> at
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>> kAssigmentSolver.java:30)
>>
>> at
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>> kAssigmentSolver.java:30)
>>
>> java.lang.StackOverflowError
>>
>> RankAssignmentSolver.depthFirstCutValue has a recursive call that goe=
s
>> through all the edges of all the nodes.
>>
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in mess=
age
>> news:opry7a3kt9lhlh26@localhost...
>> Hi,
>> what I posted is the full stack trace as it appears in the .log file.=
>> Eclips do not give any more information about what is going on.
>>
>> In the attachment is the message that appears in the workbench.
>>
>>
>> !SESSION Nov 25, 2003 10:54:09.587
>> ---------------------------------------------
>> java.version=3D1.4.2_01
>> java.vendor=3DSun Microsystems Inc.
>> BootLoader constants: OS=3Dwin32, ARCH=3Dx86, WS=3Dwin32, NL=3Den_US
>> Command-line arguments: -pdelaunch -dev bin -feature =
>> org.eclipse.platform
>> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x8=
6
>> -nl
>> en_US -configuration file:C:/eclipse
>> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
>> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
>> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
>> !MESSAGE Unable to restore editor - createElement returned null for =
>> input
>> element factory: org.eclipse.ui.part.FileEditorInputFactory
>> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
>> !MESSAGE Unhandled exception caught in event loop.
>> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
>> !MESSAGE java.lang.StackOverflowError
>> !STACK 0
>> java.lang.StackOverflowError
>>
>> ---------------------------------------------
>>
>> This is console output
>>
>> Unable to restore editor - createElement returned null for input elem=
ent
>> factory: org.eclipse.ui.part.FileEditorInputFactory
>> Unhandled exception caught in event loop.
>> Reason:
>> java.lang.StackOverflowError
>>
>> --------------------------------------------
>>
>> This is the source code that I use to generate .flow file with 3000 =
>> nodes
>>
>> public class FlowWizardPage1 extends WizardNewFileCreationPage {
>> .....
>>
>> private ActivityDiagram createWakeupModel() {
>> ActivityDiagram diagram =3D new ActivityDiagram();
>> StringTokenizer tokenizer =3D new StringTokenizer(getFileName(), " xX=
..");
>> String chartType =3D tokenizer.nextToken();
>> if (chartType.equalsIgnoreCase("flat")) {
>> int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
>> for (int i =3D 0; i <=3D maxNodeCount; i++)
>> diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount=
));
>> }
>> if (chartType.equalsIgnoreCase("pipe")) {
>> int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
>> Activity previous =3D null;
>> for (int i =3D 0; i <=3D maxNodeCount; i++) {
>> Activity current =3D new Activity("Node " + i + " out of "
>> + maxNodeCount);
>> diagram.addChild(current);
>> if (i > 0)
>> new Transition(previous, current);
>> previous =3D current;
>> }
>> }
>> return diagram;
>> }
>>
>> ......
>> }
>>
>>
>> File name that I use in case 3000 nodes is "flat 3000.flow
>>
>> ---------------------
>>
>>
>> Serge
>>
>> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com> =
>> wrote:
>>
>>> Please post the full stack trace. thanks.
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in =
>>> message
>>> news:opry5jr9delhlh26@localhost...
>>> It does work with 2500 with the flat graph structure without any
>>> connectors.
>>>
>>> It does not reach 512M when it runs. The highest it goes to is in up=
per
>>> 300 range
>>>
>>> Removing min memory size did not help.
>>>
>>> There is no recursion in creation of flat structure, just a loop.
>>>
>>> Since it gives stack overflow before it reaches upper limit of memor=
y,
>>> it
>>> does not seem to be a memory consumption problem.
>>>
>>> Thank you for help
>>> Serge
>>>
>>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>>
>>>> So, you are saying that this works just fine with 2500 nodes?
>>>>
>>>> I'd track what's causing the StackOverflow. Make sure there's no
>>>> infinite
>>>> loop, cycle or recursion. My first guess would be that you don't h=
ave
>>>> sufficient memory for that, but then you'd get an Out of Memory
>>>> exception.
>>>> If you have a heirarchical structure that's 30K deep, and you call
>>>> invalidateTree() on the root figure, there's a good chance you'll g=
et =
>>>> a
>>>> stack overflow.
>>>>
>>>> Try removing the min memory requirements on your VM and see if that=
>>>> helps.
>>>> Keep an eye on the system memory usage when running the program. S=
ee
>>>> if
>>>> it
>>>> actually hits 512M. Try allocating some more memory to the VM, and=
=
>>>> see
>>>> if
>>>> that helps at all.
>>>>
>>>> If memory consumption is the problem, I am not sure what can be don=
e =
>>>> to
>>>> mitigate this problem. Some optimization is in call, of course. =
>>>> Maybe
>>>> the
>>>> flyweight pattern will rescue you. However, going from a max of 2.=
5K
>>>> to
>>>> 100K is a tall order.
>>>>
>>>>
>>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>>> message
>>>> news:opry5gois4lhlh26@localhost...
>>>> Hi All
>>>> Our application needs to generate graphs with amount of nodes in =
>>>> 100000
>>>> range.
>>>> I have modified flow example slightly to generate graphs
>>>> programaticaly.
>>>> It seems that I can not go past 2500 nodes in the graph.
>>>>
>>>> This is what I get in the log for 3000 nodes
>>>>
>>>> !SESSION
>>>> ------------------------------------------------------------ -------=
---
>>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>>> !MESSAGE Exception launching the Eclipse Platform:
>>>> !STACK
>>>> java.lang.reflect.InvocationTargetException
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source=
)
>>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>>> Caused by: java.lang.reflect.InvocationTargetException
>>>> at
>>>>
>>>
>>
> org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoad=
er.jav
>>>> a:861)
>>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>>> ... 7 more
>>>> Caused by: java.lang.StackOverflowError
>>>>
>>>> -----------------------------
>>>>
>>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>>
>>>> Does anybody have an idea why?
>>>> Does anybody use GEF with amount of nodes in 100K range?
>>>>
>>>> Thanks
>>>> Serge Mankovski =3D
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
-- =
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #108813 is a reply to message #108800] |
Wed, 10 December 2003 17:58 |
| Eclipse User |
|
|
|
Do you expect 10K-25K nodes at one level of the hierarchy tree? If they are
spread across on several levels, you can expect the performance to improve
quite a bit.
"Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
news:oprzzfcutwlhlh26@localhost...
Randy and Pratik
We decided not to build 100K sized graphs. However we still need to be
able to build graphs in 10-25K nodes range.
This means that I will be spending some time and do optimization and fixes
that we are talking about here. It might happen early next year.
Thank you for you help.
I will probably ask more questions when I start implementing the fixes.
Serge
On Mon, 1 Dec 2003 19:49:33 -0500, Randy Hudson <none@us.ibm.com> wrote:
> The algorithm creates a spanning tree over the directed graph. Once the
> spanning tree has been created, it chooses an arbitrary root for the
> tree,
> and the performs a depth first traversal implemented using recursion.
>
> You test graph is an extreme case. It is just one long chain of nodes.
> Is
> you application limited to these types of "graphs"? What is the real
> world
> scenario in which you encounter the overflow?
>
> I think that removing the recursion would be pretty simple in this case.
> Would you like to attempt to provide a patch which is not recursive? For
> more information about the algorithm, see
> http://citeseer.nj.nec.com/gansner93technique.html
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
> news:oprza7w7tulhlh26@localhost...
> Pratik,
> Do you think that case with the RankAssigmentSolver can be entered as a
> bug in the bug database so that it might get solved at some point? It
> seems that we need is to substitute recursion by iteration. I could look
> at this issue if I had a bit more date about the purpose of this method
> and the structure of the tree it works on.
>
> I suppose performance issue can not be resolved without major re-work. If
> it can be solved at all.
>
> Serge
>
>
> On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com>
> wrote:
>
>> Alright, I tried it out on my computer. Serge, you were right.
>> Scalability
>> in GEF (I was able to create a large Logic Diagram with 10K nodes --
>> working
>> on 100K now) or memory usage are not a problem (although performance
>> certainly is -- with 100K nodes, my computer has been pegged at 100% for
>> more than half an hour now, and it's not done yet!).
>>
>> I found the problem when I tried to create a Flow Example with 5000
>> activities. Here it is:
>> at
>>
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
>> kAssigmentSolver.java:30)
>>
>> at
>>
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
>> kAssigmentSolver.java:30)
>>
>> at
>>
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
>> kAssigmentSolver.java:30)
>>
>> at
>>
>
org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutValue(Ran
>> kAssigmentSolver.java:30)
>>
>> java.lang.StackOverflowError
>>
>> RankAssignmentSolver.depthFirstCutValue has a recursive call that goes
>> through all the edges of all the nodes.
>>
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in message
>> news:opry7a3kt9lhlh26@localhost...
>> Hi,
>> what I posted is the full stack trace as it appears in the .log file.
>> Eclips do not give any more information about what is going on.
>>
>> In the attachment is the message that appears in the workbench.
>>
>>
>> !SESSION Nov 25, 2003 10:54:09.587
>> ---------------------------------------------
>> java.version=1.4.2_01
>> java.vendor=Sun Microsystems Inc.
>> BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
>> Command-line arguments: -pdelaunch -dev bin -feature
>> org.eclipse.platform
>> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x86
>> -nl
>> en_US -configuration file:C:/eclipse
>> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
>> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/
>> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
>> !MESSAGE Unable to restore editor - createElement returned null for
>> input
>> element factory: org.eclipse.ui.part.FileEditorInputFactory
>> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
>> !MESSAGE Unhandled exception caught in event loop.
>> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
>> !MESSAGE java.lang.StackOverflowError
>> !STACK 0
>> java.lang.StackOverflowError
>>
>> ---------------------------------------------
>>
>> This is console output
>>
>> Unable to restore editor - createElement returned null for input element
>> factory: org.eclipse.ui.part.FileEditorInputFactory
>> Unhandled exception caught in event loop.
>> Reason:
>> java.lang.StackOverflowError
>>
>> --------------------------------------------
>>
>> This is the source code that I use to generate .flow file with 3000
>> nodes
>>
>> public class FlowWizardPage1 extends WizardNewFileCreationPage {
>> .....
>>
>> private ActivityDiagram createWakeupModel() {
>> ActivityDiagram diagram = new ActivityDiagram();
>> StringTokenizer tokenizer = new StringTokenizer(getFileName(), " xX.");
>> String chartType = tokenizer.nextToken();
>> if (chartType.equalsIgnoreCase("flat")) {
>> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
>> for (int i = 0; i <= maxNodeCount; i++)
>> diagram.addChild(new Activity("Node " + i + " out of " + maxNodeCount));
>> }
>> if (chartType.equalsIgnoreCase("pipe")) {
>> int maxNodeCount = Integer.parseInt(tokenizer.nextToken());
>> Activity previous = null;
>> for (int i = 0; i <= maxNodeCount; i++) {
>> Activity current = new Activity("Node " + i + " out of "
>> + maxNodeCount);
>> diagram.addChild(current);
>> if (i > 0)
>> new Transition(previous, current);
>> previous = current;
>> }
>> }
>> return diagram;
>> }
>>
>> ......
>> }
>>
>>
>> File name that I use in case 3000 nodes is "flat 3000.flow
>>
>> ---------------------
>>
>>
>> Serge
>>
>> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com>
>> wrote:
>>
>>> Please post the full stack trace. thanks.
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>> message
>>> news:opry5jr9delhlh26@localhost...
>>> It does work with 2500 with the flat graph structure without any
>>> connectors.
>>>
>>> It does not reach 512M when it runs. The highest it goes to is in upper
>>> 300 range
>>>
>>> Removing min memory size did not help.
>>>
>>> There is no recursion in creation of flat structure, just a loop.
>>>
>>> Since it gives stack overflow before it reaches upper limit of memory,
>>> it
>>> does not seem to be a memory consumption problem.
>>>
>>> Thank you for help
>>> Serge
>>>
>>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>>
>>>> So, you are saying that this works just fine with 2500 nodes?
>>>>
>>>> I'd track what's causing the StackOverflow. Make sure there's no
>>>> infinite
>>>> loop, cycle or recursion. My first guess would be that you don't have
>>>> sufficient memory for that, but then you'd get an Out of Memory
>>>> exception.
>>>> If you have a heirarchical structure that's 30K deep, and you call
>>>> invalidateTree() on the root figure, there's a good chance you'll get
>>>> a
>>>> stack overflow.
>>>>
>>>> Try removing the min memory requirements on your VM and see if that
>>>> helps.
>>>> Keep an eye on the system memory usage when running the program. See
>>>> if
>>>> it
>>>> actually hits 512M. Try allocating some more memory to the VM, and
>>>> see
>>>> if
>>>> that helps at all.
>>>>
>>>> If memory consumption is the problem, I am not sure what can be done
>>>> to
>>>> mitigate this problem. Some optimization is in call, of course.
>>>> Maybe
>>>> the
>>>> flyweight pattern will rescue you. However, going from a max of 2.5K
>>>> to
>>>> 100K is a tall order.
>>>>
>>>>
>>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>>> message
>>>> news:opry5gois4lhlh26@localhost...
>>>> Hi All
>>>> Our application needs to generate graphs with amount of nodes in
>>>> 100000
>>>> range.
>>>> I have modified flow example slightly to generate graphs
>>>> programaticaly.
>>>> It seems that I can not go past 2500 nodes in the graph.
>>>>
>>>> This is what I get in the log for 3000 nodes
>>>>
>>>> !SESSION
>>>> ------------------------------------------------------------ ----------
>>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>>> !MESSAGE Exception launching the Eclipse Platform:
>>>> !STACK
>>>> java.lang.reflect.InvocationTargetException
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>>> Caused by: java.lang.reflect.InvocationTargetException
>>>> at
>>>>
>>>
>>
>
org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoader.jav
>>>> a:861)
>>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>>> ... 7 more
>>>> Caused by: java.lang.StackOverflowError
>>>>
>>>> -----------------------------
>>>>
>>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>>
>>>> Does anybody have an idea why?
>>>> Does anybody use GEF with amount of nodes in 100K range?
>>>>
>>>> Thanks
>>>> Serge Mankovski =
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
|
|
|
| Re: Limitation in number of nodes in a graph [message #109753 is a reply to message #108813] |
Thu, 18 December 2003 12:41 |
| Eclipse User |
|
|
|
Originally posted by: smankovski-NO-SPAM-.cybermation.com
Season greetings!
Our trees branch a lot. Hope performance will be acceptible.
Serge
On Wed, 10 Dec 2003 17:58:12 -0500, Pratik Shah <ppshah@us.ibm.com> wrot=
e:
> Do you expect 10K-25K nodes at one level of the hierarchy tree? If th=
ey =
> are
> spread across on several levels, you can expect the performance to =
> improve
> quite a bit.
>
>
> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in messa=
ge
> news:oprzzfcutwlhlh26@localhost...
> Randy and Pratik
> We decided not to build 100K sized graphs. However we still need to be=
> able to build graphs in 10-25K nodes range.
> This means that I will be spending some time and do optimization and =
> fixes
> that we are talking about here. It might happen early next year.
>
> Thank you for you help.
> I will probably ask more questions when I start implementing the fixes=
..
>
> Serge
>
>
>
> On Mon, 1 Dec 2003 19:49:33 -0500, Randy Hudson <none@us.ibm.com> wrot=
e:
>
>> The algorithm creates a spanning tree over the directed graph. Once =
the
>> spanning tree has been created, it chooses an arbitrary root for the
>> tree,
>> and the performs a depth first traversal implemented using recursion.=
>>
>> You test graph is an extreme case. It is just one long chain of node=
s.
>> Is
>> you application limited to these types of "graphs"? What is the real=
>> world
>> scenario in which you encounter the overflow?
>>
>> I think that removing the recursion would be pretty simple in this ca=
se.
>> Would you like to attempt to provide a patch which is not recursive? =
=
>> For
>> more information about the algorithm, see
>> http://citeseer.nj.nec.com/gansner93technique.html
>>
>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in mess=
age
>> news:oprza7w7tulhlh26@localhost...
>> Pratik,
>> Do you think that case with the RankAssigmentSolver can be entered as=
a
>> bug in the bug database so that it might get solved at some point? It=
>> seems that we need is to substitute recursion by iteration. I could l=
ook
>> at this issue if I had a bit more date about the purpose of this meth=
od
>> and the structure of the tree it works on.
>>
>> I suppose performance issue can not be resolved without major re-work=
.. =
>> If
>> it can be solved at all.
>>
>> Serge
>>
>>
>> On Tue, 25 Nov 2003 14:07:07 -0500, Pratik Shah <ppshah@us.ibm.com>
>> wrote:
>>
>>> Alright, I tried it out on my computer. Serge, you were right.
>>> Scalability
>>> in GEF (I was able to create a large Logic Diagram with 10K nodes --=
>>> working
>>> on 100K now) or memory usage are not a problem (although performance=
>>> certainly is -- with 100K nodes, my computer has been pegged at 100%=
=
>>> for
>>> more than half an hour now, and it's not done yet!).
>>>
>>> I found the problem when I tried to create a Flow Example with 5000
>>> activities. Here it is:
>>> at
>>>
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>>> kAssigmentSolver.java:30)
>>>
>>> at
>>>
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>>> kAssigmentSolver.java:30)
>>>
>>> at
>>>
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>>> kAssigmentSolver.java:30)
>>>
>>> at
>>>
>>
> org.eclipse.draw2d.internal.graph.RankAssigmentSolver.depthF irstCutVal=
ue(Ran
>>> kAssigmentSolver.java:30)
>>>
>>> java.lang.StackOverflowError
>>>
>>> RankAssignmentSolver.depthFirstCutValue has a recursive call that go=
es
>>> through all the edges of all the nodes.
>>>
>>>
>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in =
>>> message
>>> news:opry7a3kt9lhlh26@localhost...
>>> Hi,
>>> what I posted is the full stack trace as it appears in the .log file=
..
>>> Eclips do not give any more information about what is going on.
>>>
>>> In the attachment is the message that appears in the workbench.
>>>
>>>
>>> !SESSION Nov 25, 2003 10:54:09.587
>>> ---------------------------------------------
>>> java.version=3D1.4.2_01
>>> java.vendor=3DSun Microsystems Inc.
>>> BootLoader constants: OS=3Dwin32, ARCH=3Dx86, WS=3Dwin32, NL=3Den_US=
>>> Command-line arguments: -pdelaunch -dev bin -feature
>>> org.eclipse.platform
>>> -data C:\eclipse 2.1.2\runtime-workspace -os win32 -ws win32 -arch x=
86
>>> -nl
>>> en_US -configuration file:C:/eclipse
>>> 2.1.2/workspace/.metadata/.plugins/org.eclipse.pde.core/C__e clipse
>>> 2.1.2_runtime-workspace/platform.cfg -install file:C:/eclipse 2.1.2/=
>>> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:09.587
>>> !MESSAGE Unable to restore editor - createElement returned null for
>>> input
>>> element factory: org.eclipse.ui.part.FileEditorInputFactory
>>> !ENTRY org.eclipse.ui 4 4 Nov 25, 2003 10:54:44.577
>>> !MESSAGE Unhandled exception caught in event loop.
>>> !ENTRY org.eclipse.ui 4 0 Nov 25, 2003 10:54:44.587
>>> !MESSAGE java.lang.StackOverflowError
>>> !STACK 0
>>> java.lang.StackOverflowError
>>>
>>> ---------------------------------------------
>>>
>>> This is console output
>>>
>>> Unable to restore editor - createElement returned null for input =
>>> element
>>> factory: org.eclipse.ui.part.FileEditorInputFactory
>>> Unhandled exception caught in event loop.
>>> Reason:
>>> java.lang.StackOverflowError
>>>
>>> --------------------------------------------
>>>
>>> This is the source code that I use to generate .flow file with 3000
>>> nodes
>>>
>>> public class FlowWizardPage1 extends WizardNewFileCreationPage {
>>> .....
>>>
>>> private ActivityDiagram createWakeupModel() {
>>> ActivityDiagram diagram =3D new ActivityDiagram();
>>> StringTokenizer tokenizer =3D new StringTokenizer(getFileName(), " x=
X.");
>>> String chartType =3D tokenizer.nextToken();
>>> if (chartType.equalsIgnoreCase("flat")) {
>>> int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
>>> for (int i =3D 0; i <=3D maxNodeCount; i++)
>>> diagram.addChild(new Activity("Node " + i + " out of " =
>>> + maxNodeCount));
>>> }
>>> if (chartType.equalsIgnoreCase("pipe")) {
>>> int maxNodeCount =3D Integer.parseInt(tokenizer.nextToken());
>>> Activity previous =3D null;
>>> for (int i =3D 0; i <=3D maxNodeCount; i++) {
>>> Activity current =3D new Activity("Node " + i + " out of "
>>> + maxNodeCount);
>>> diagram.addChild(current);
>>> if (i > 0)
>>> new Transition(previous, current);
>>> previous =3D current;
>>> }
>>> }
>>> return diagram;
>>> }
>>>
>>> ......
>>> }
>>>
>>>
>>> File name that I use in case 3000 nodes is "flat 3000.flow
>>>
>>> ---------------------
>>>
>>>
>>> Serge
>>>
>>> On Tue, 25 Nov 2003 10:37:42 -0500, Randy Hudson <none@us.ibm.com>
>>> wrote:
>>>
>>>> Please post the full stack trace. thanks.
>>>>
>>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>>> message
>>>> news:opry5jr9delhlh26@localhost...
>>>> It does work with 2500 with the flat graph structure without any
>>>> connectors.
>>>>
>>>> It does not reach 512M when it runs. The highest it goes to is in =
>>>> upper
>>>> 300 range
>>>>
>>>> Removing min memory size did not help.
>>>>
>>>> There is no recursion in creation of flat structure, just a loop.
>>>>
>>>> Since it gives stack overflow before it reaches upper limit of memo=
ry,
>>>> it
>>>> does not seem to be a memory consumption problem.
>>>>
>>>> Thank you for help
>>>> Serge
>>>>
>>>> 2003 11:49:31 -0500, Pratik Shah <ppshah@us.ibm.com> wrote:
>>>>
>>>>> So, you are saying that this works just fine with 2500 nodes?
>>>>>
>>>>> I'd track what's causing the StackOverflow. Make sure there's no
>>>>> infinite
>>>>> loop, cycle or recursion. My first guess would be that you don't =
>>>>> have
>>>>> sufficient memory for that, but then you'd get an Out of Memory
>>>>> exception.
>>>>> If you have a heirarchical structure that's 30K deep, and you call=
>>>>> invalidateTree() on the root figure, there's a good chance you'll =
get
>>>>> a
>>>>> stack overflow.
>>>>>
>>>>> Try removing the min memory requirements on your VM and see if tha=
t
>>>>> helps.
>>>>> Keep an eye on the system memory usage when running the program. =
See
>>>>> if
>>>>> it
>>>>> actually hits 512M. Try allocating some more memory to the VM, an=
d
>>>>> see
>>>>> if
>>>>> that helps at all.
>>>>>
>>>>> If memory consumption is the problem, I am not sure what can be do=
ne
>>>>> to
>>>>> mitigate this problem. Some optimization is in call, of course.
>>>>> Maybe
>>>>> the
>>>>> flyweight pattern will rescue you. However, going from a max of 2=
..5K
>>>>> to
>>>>> 100K is a tall order.
>>>>>
>>>>>
>>>>> "Serge Mankovski" <smankovski-NO-SPAM-@cybermation.com> wrote in
>>>>> message
>>>>> news:opry5gois4lhlh26@localhost...
>>>>> Hi All
>>>>> Our application needs to generate graphs with amount of nodes in
>>>>> 100000
>>>>> range.
>>>>> I have modified flow example slightly to generate graphs
>>>>> programaticaly.
>>>>> It seems that I can not go past 2500 nodes in the graph.
>>>>>
>>>>> This is what I get in the log for 3000 nodes
>>>>>
>>>>> !SESSION
>>>>> ------------------------------------------------------------ ------=
----
>>>>> !ENTRY org.eclipse.core.launcher 4 0 Nov 21, 2003 18:48:40.536
>>>>> !MESSAGE Exception launching the Eclipse Platform:
>>>>> !STACK
>>>>> java.lang.reflect.InvocationTargetException
>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Sourc=
e)
>>>>> at java.lang.reflect.Method.invoke(Unknown Source)
>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
>>>>> at org.eclipse.core.launcher.Main.run(Main.java:747)
>>>>> at org.eclipse.core.launcher.Main.main(Main.java:583)
>>>>> Caused by: java.lang.reflect.InvocationTargetException
>>>>> at
>>>>>
>>>>
>>>
>>
> org.eclipse.core.internal.boot.InternalBootLoader.run(Intern alBootLoad=
er.jav
>>>>> a:861)
>>>>> at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
>>>>> ... 7 more
>>>>> Caused by: java.lang.StackOverflowError
>>>>>
>>>>> -----------------------------
>>>>>
>>>>> I am running vm with -Xss2M -Xms64M -Xmx512M
>>>>>
>>>>> Does anybody have an idea why?
>>>>> Does anybody use GEF with amount of nodes in 100K range?
>>>>>
>>>>> Thanks
>>>>> Serge Mankovski =3D
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
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