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abstract away use of MPI communicators (ie make MPI_COMM_WORLD optional) #151

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jeffhammond opened this issue Nov 3, 2019 · 1 comment
Open

abstract away use of MPI communicators (ie make MPI_COMM_WORLD optional) #151

jeffhammond opened this issue Nov 3, 2019 · 1 comment
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@jeffhammond
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@jeffhammond
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Using MPI_COMM_WORLD is bad, although it doesn't matter much in GA/ARMCI applications that do not use MPI directly.

We should abstract away the use of communicators in GA/ARCMI so that applications can initialize GA/ARMCI as proper MPI libraries.

I have implemented this in ARMCI-MPI already: pmodels/armci-mpi#26.
@jeffhammond jeffhammond self-assigned this Nov 3, 2019
@bjpalmer
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I think this may have been taken care of by allowing GA to be initialized using an MPI communicator supplied by an external application. If this meets the need, I'll close this issue.

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