v2.x: coll/libnbc: fix iallgather[v] #2264
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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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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)