[feldy77]

Hi Foamers,
Can anybody guide me through the setup
process necessary for parallel running of viewFactor radiation model
Many thanks, Yuri

[tehache]

First: Sorry for duplicate posting - I just accidentally posted the same as a reply to an older existing question - but in the OpenFoam Forum, instead of Running, Solving, CFD...

My question is, has anybody successfully run S2S radiation problems using the viewfactor method in parallel?

I am failing with the file "FinalAgglom" missing in the processor subdirectories, and have no idea how to decompose or distribute that.

Thanks a lot for any hint!

Found out myself - but as I have seen others asking the same: The trick is to run faceAgglomerate and viewFactorsGen also in parallel, after decomposing the case,
and with the same number of processes ...

[wyldckat]

Greetings Thomas,

Originally Posted by tehache

First: Sorry for duplicate posting - I just accidentally posted the same as a reply to an older existing question - but in the OpenFoam Forum, instead of Running, Solving, CFD...

I've moved your latest post to this thread and deleted the other post, as it was more incomplete and as you've indicated, was an accidental post.

Originally Posted by tehache

Found out myself - but as I have seen others asking the same: The trick is to run faceAgglomerate and viewFactorsGen also in parallel, after decomposing the case,
and with the same number of processes ...

Thanks for sharing the solution you've found!

Best regards,
Bruno

[a.hajisharifi]

Originally Posted by tehache

First: Sorry for duplicate posting - I just accidentally posted the same as a reply to an older existing question - but in the OpenFoam Forum, instead of Running, Solving, CFD...

My question is, has anybody successfully run S2S radiation problems using the viewfactor method in parallel?

I am failing with the file "FinalAgglom" missing in the processor subdirectories, and have no idea how to decompose or distribute that.

Thanks a lot for any hint!

Found out myself - but as I have seen others asking the same: The trick is to run faceAgglomerate and viewFactorsGen also in parallel, after decomposing the case,
and with the same number of processes ...

Dear Thomas @tehache, Dear Yuri @feldy77

I have the same problem while running the chtMultiregionSimpleFoam with radiation in parallel.

after decomposing the domain with , for instance 2 cores, I launched the face faceAgglomerate and viewFactorsGen in parallel like:

mpirun -np 2 faceAgglomerate -region air -dict constant/viewFactorsDict -parallel
mpirun -np 2 viewFactorsGen -region air -parallel

but I got the following error:


Do you have any idea how to solve this problem?
The error is not clear and I can not understand where the problem is?



#0 Foam::error:: printStack(Foam:: Ostream&) at ??:?
[1] #1 Foam::IOerror::exitOrAbort(int, bool) at ??:?
[0] #1 Foam::IOerror::exitOrAbort(int, bool) at ??:?
[1] #2 Foam::radiation::solidAbsorption::solidAbsorption( Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #2 Foam::radiation::solidAbsorption::solidAbsorption( Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #3 Foam::radiation::wallAbsorptionEmissionModel::addd ictionaryConstructorToTable<Foam::radiation::solid Absorption>::New(Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #4 Foam::radiation::wallAbsorptionEmissionModel::New( Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #5 Foam::radiation:: opaqueDiffusive:: opaqueDiffusive(Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #6 Foam::radiation::boundaryRadiationPropertiesPatch: :adddictionaryConstructorToTable<Foam::radiation:: opaqueDiffusive>::New(Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #7 Foam::radiation::boundaryRadiationPropertiesPatch: :New(Foam::dictionary const&, Foam:: polyPatch const&) at ??:?
[0] #8 Foam::radiation::boundaryRadiationProperties::boun daryRadiationProperties(Foam::fvMesh const&) at ??:?
[0] #9 Foam::radiation::boundaryRadiationProperties const& Foam::MeshObject<Foam::fvMesh, Foam::GeometricMeshObject, Foam::radiation::boundaryRadiationProperties>::New <>(Foam::fvMesh const&) at ??:?
[0] #10 Foam::radiation::viewFactor::calculate() at ??:?
[0] #11 Foam::radiation::radiationModel::correct() at ??:?
[0] #12 ? at ??:?
[1] #13 __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
[1] #14 at ??:?
[0] #13 __libc_start_main? in /lib/x86_64-linux-gnu/libc.so.6
[0] #14 ? at ??:?
--------------------------------------------------------------------------
MPI_ABORT was invoked on rank 1 in communicator MPI_COMM_WORLD
with errorcode 1.

NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them.