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Gilles Gouaillardet e70a30cca4 coll/libnbc: optimize zero size ialltoall{v,w} with MPI_IN_PLACE
and incidentally avoids malloc(0)

Thanks Lisandro Dalcin for the report

Fixes open-mpi/ompi#2945

Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
2017-02-13 15:21:28 +09:00
..
2017-01-12 11:41:35 +09:00