v2.0.x: coll/libnbc: fix iallgather[v] #2265
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In order to optimize for MPI_IN_PLACE, data is sent from the receive buffer. consequently, it should be sent with the receive type and count. Thanks Josh Hursey for the report and test case Refs open-mpi#2256 (cherry picked from commit open-mpi/ompi@45336d0)
bosilca
approved these changes
Oct 21, 2016
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@ggouaillardet @jjhursey Can you guys put the test case for this in the ibm test suite in ompi-tests? |
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done in open-mpi/ompi-tests@ee87d40394f62c0dca036f40fb021fc2d86440b2 |
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@ggouaillardet Excellent -- thank you! |
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In order to optimize for MPI_IN_PLACE, data is sent from the receive buffer.
consequently, it should be sent with the receive type and count.
Thanks Josh Hursey for the report and test case
Refs #2256
(cherry picked from commit 45336d0)