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topoSet simpleFoam parallelized run error

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Old   February 28, 2013, 13:20
Default topoSet simpleFoam parallelized run error
  #1
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Canakkale Dardanelspor
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Hi,

There is a parallel run issue in one of my cases in which I suspect that I have done something wrong with topoSetDict.

=== 1 ===

checkMesh.log
fvSchemes
fvSolution

In my opinion, the setting is OK.

=== 2 ===

I execute the above commands respectively:

Code:
blockMesh
topoSet
decomposePar
mpirun -np 2 simpleFoam -parallel
=== 3 ===

controlDict
topoSetDict

These are the system documents of the case.

=== 4 ===

I obtain the following error:

Error_file

In short:

Code:
[0] --> FOAM FATAL ERROR: 
[0] Cannot find file "" in directory "polyMesh/sets" in times 0 down to constant
[0] 
[0]     From function Time::findInstance(const fileName&, const word&, const IOobject::readOption, const word&)
[0]     in file db/Time/findInstance.C at line 140.
[0] 
FOAM parallel run exiting
=== 5 ===

I have found some other forum pages which consider the same error message in a slightly different context. Therefore, I somehow couldn't adapt the given answers to my case.

I appreciate any help.

Many thanks in advance.

Last edited by HakikiCanakkaleli; March 1, 2013 at 03:12.
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Old   March 2, 2013, 08:04
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Greetings HakikiCanakkaleli,

The problem is that the "sets" aren't decomposed as well. Try running topoSet in parallel:
Code:
blockMesh
decomposePar
mpirun -np 2 topoSet -parallel
mpirun -np 2 simpleFoam -parallel
Best regards,
Bruno
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Old   March 2, 2013, 08:41
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Dear wyldckat,

Thanks a lot for taking your time and explain it to me. It perfectly works well now.

Kind regards.
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Old   October 5, 2018, 06:42
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Hüseyin Can Önel
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Quote:
Originally Posted by wyldckat View Post
Greetings HakikiCanakkaleli,

The problem is that the "sets" aren't decomposed as well. Try running topoSet in parallel:
Code:
blockMesh
decomposePar
mpirun -np 2 topoSet -parallel
mpirun -np 2 simpleFoam -parallel
Best regards,
Bruno
Hi wyldckat,
What if I want to run snappyHexMesh in parallel (before topoSet and after decomposition, without creating new time directories) in your script?
Thanks
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Old   October 5, 2018, 07:44
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Quote:
Originally Posted by hconel View Post
Hi wyldckat,
What if I want to run snappyHexMesh in parallel (before topoSet and after decomposition, without creating new time directories) in your script?
Thanks
Run the exact same thing, but with :
Code:
mpirun -np 2 snappyHexMesh -overwrite -parallel
Between decomposePar and topoSet. The -overwrite option allows to overwrite files instead of creating time directories for the different meshing steps (1, 2, 3 for castellated, snap and layer meshes.)
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Old   October 5, 2018, 10:52
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Quote:
Originally Posted by Yann View Post
Run the exact same thing, but with :
Code:
mpirun -np 2 snappyHexMesh -overwrite -parallel
Between decomposePar and topoSet. The -overwrite option allows to overwrite files instead of creating time directories for the different meshing steps (1, 2, 3 for castellated, snap and layer meshes.)
That is exactly what I was looking for, my problem was snappyHexMesh creating time directories. Thanks so much!
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