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Mikhail Kurnosov 28d5837dd9 coll: reduce_scatter_block: add butterfly algorithm
Implements butterfly algorithm for MPI_Reduce_scatter_block.
The algorithm can be used both by commutative and non-commutative
operations, for power-of-two and non-power-of-two number of processes.

Signed-off-by: Mikhail Kurnosov <mkurnosov@gmail.com>
2018-05-27 14:17:41 +07:00
..
2018-02-22 17:48:29 +02:00
2017-11-30 10:41:23 -07:00