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interFoam (OF 1.7.1) in parallel ..need help

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Old   October 15, 2010, 12:15
Default interFoam (OF 1.7.1) in parallel ..need help
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Hello,

Recently I have encountered a problem When I want to run a simple case with interFoam (OF 1.7.1 ) in parallel. the out file shows that After selecting incompressible transport model Newtonian, it crashes ( specially in 3D cases). Actually I dont know it crashes or there is another problem which I cant understand. it is weired because I can run it normally without parallelization without any problem. Sometimes even I can run it in parallel but with few processor( 4 ).
Does anybody has this problem with OF 1.7.1?

I would be grateful if you guys help me to fix my problem.

Thanks,

MEhran
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Old   October 15, 2010, 14:45
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I found out that when I decrease the dimension of my domain in to millimeter. ex.(3mm*1.2mm) independent of the cell size, it crashes when I run it in parallel. ( it runs in order of cm not mm...why???) Why this happen?? can any body help me!!


QUOTE=farhagim;279394]Hello,

Recently I have encountered a problem When I want to run a simple case with interFoam (OF 1.7.1 ) in parallel. the out file shows that After selecting incompressible transport model Newtonian, it crashes ( specially in 3D cases). Actually I dont know it crashes or there is another problem which I cant understand. it is weired because I can run it normally without parallelization without any problem. Sometimes even I can run it in parallel but with few processor( 4 ).
Does anybody has this problem with OF 1.7.1?

I would be grateful if you guys help me to fix my problem.

Thanks,

MEhran[/QUOTE]
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Old   July 6, 2012, 06:25
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Hey,
I just encountered the same Problem. Sry for digging up this old Thread.
Here is my Log:
Quote:
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.1.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.1.0-bd7367f93311
Exec : interFoam -parallel
Date : Jul 06 2012
Time : 11:48:25
Host : "eaebe296"
PID : 11255
Case : /home/vw6faxp/OpenFOAM/vw6faxp-2.1.0/learning/befuellungNT
nProcs : 2
Slaves :
1
(
"eaebe296.11256"
)

Pstream initialized with:
floatTransfer : 0
nProcsSimpleSum : 0
commsType : nonBlocking
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0


PIMPLE: Operating solver in PISO mode

Reading field p_rgh

Reading field alpha1

Reading field U

Reading/calculating face flux field phi

[1] #0 Foam::error:rintStack(Foam::Ostream&) in "/appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
[1] #1 Foam::sigFpe::sigHandler(int) in "/appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
[1] #2 Reading transportProperties

Selecting incompressible transport model Newtonian
Selecting incompressible transport model Newtonian
__restore_rt at sigaction.c:0
[1] #3 Foam::surfaceInterpolation::makeWeights() const in "/appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
[1] #4 Foam::surfaceInterpolation::weights() const in "/appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
[1] #5 main in "/appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/bin/interFoam"
[1] #6 __libc_start_main in "/lib64/libc.so.6"
[1] #7 Foam::regIOobject::writeObject(Foam::IOstream::str eamFormat, Foam::IOstream::versionNumber, Foam::IOstream::compressionType) const in "/appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/bin/interFoam"
[eaebe296:11256] *** Process received signal ***
[eaebe296:11256] Signal: Floating point exception (8)
[eaebe296:11256] Signal code: (-6)
[eaebe296:11256] Failing at address: 0xc3ec00002bf8
[eaebe296:11256] [ 0] /lib64/libc.so.6 [0x38f18302d0]
[eaebe296:11256] [ 1] /lib64/libc.so.6(gsignal+0x35) [0x38f1830265]
[eaebe296:11256] [ 2] /lib64/libc.so.6 [0x38f18302d0]
[eaebe296:11256] [ 3] /appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/lib/libfiniteVolume.so(_ZNK4Foam20surfaceInterpolation 11makeWeightsEv+0x21b) [0x2ac17f43811b]
[eaebe296:11256] [ 4] /appl/openfoam/2.1.0/OpenFOAM-2.1.0/platforms/linux64GccDPOpt/lib/libfiniteVolume.so(_ZNK4Foam20surfaceInterpolation 7weightsEv+0x15) [0x2ac17f4382d5]
[eaebe296:11256] [ 5] interFoam [0x425c9a]
[eaebe296:11256] [ 6] /lib64/libc.so.6(__libc_start_main+0xf4) [0x38f181d994]
[eaebe296:11256] [ 7] interFoam(_ZNK4Foam11regIOobject11writeObjectENS_8 IOstream12streamFormatENS1_13versionNumberENS1_15c ompressionTypeE+0x109) [0x4209e9]
[eaebe296:11256] *** End of error message ***
--------------------------------------------------------------------------
mpirun noticed that process rank 1 with PID 11256 on node eaebe296 exited on signal 8 (Floating point exception).
--------------------------------------------------------------------------
I have no Idea what to do. The OF 2.1.0 Case runs ok on a Single Processor. I have tried Different decomposition methods but no luck. I have tried different CPU counts again No Luck.
Ideas, Anyone?
Thank you
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Old   July 25, 2012, 10:37
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Alessandro Pani
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Hi guys, i'm beginning to look at parallelization...
what method did you used in decomposeParDict ?
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Old   July 26, 2012, 16:42
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Jens Höpken
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Does your case run in serial?
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