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PCU_Switch_Comm requires valid MPI communicator #1

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rettenbs opened this issue Oct 27, 2017 · 0 comments · Fixed by #68
Closed

PCU_Switch_Comm requires valid MPI communicator #1

rettenbs opened this issue Oct 27, 2017 · 0 comments · Fixed by #68

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@rettenbs
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We cannot use MPI_UNDEFINED here because PCU requires a valid communicator:

PUMGen/src/input/NetCDFMesh.h

Line 67 in b1661b8

MPI_Comm_split(MPI_COMM_WORLD, (nLocalPart > 0 ? 0 : MPI_UNDEFINED), 0, &commIO);

Replacing MPI_UNDEFINED with 1 should do the trick.
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Bypass APF/SCOREC SeisSol/PUMGen
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@rettenbs