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MPI+OpenMP should use MPI_Init_thread #4

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omor1 opened this issue Jul 17, 2019 · 0 comments
Open

MPI+OpenMP should use MPI_Init_thread #4

omor1 opened this issue Jul 17, 2019 · 0 comments

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@omor1
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omor1 commented Jul 17, 2019

Initializing MPI by calling MPI_Init rather than MPI_Init_thread requires that the process be single-threaded (it is exactly equivalent to supplying MPI_THREAD_SINGLE to the latter function).
This is vaguely alluded to in #2 by @jeffhammond.
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