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@devreal devreal commented Feb 20, 2020

The MPI standard mandates that for contiguous shared memory windows the returned baseptr can be used to directly calculate the remote addresses on other processes so we cannot return NULL if size == 0.

Cherry-pick of #7204 to the v3.1.x branch.

Signed-off-by: Joseph Schuchart [email protected]
(cherry picked from commit 06bbcf4)

…ize zero

Signed-off-by: Joseph Schuchart <[email protected]>
(cherry picked from commit 06bbcf4)
@gpaulsen gpaulsen requested a review from jsquyres February 24, 2020 21:37
@jsquyres jsquyres added this to the v3.1.6 milestone Feb 24, 2020
@jsquyres jsquyres requested a review from hjelmn February 24, 2020 21:44
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@hjelmn Ping.

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Decided to merge this as (1) it's super low risk and (2) we need an easy way to kick off more MTT before we ship.

@bwbarrett bwbarrett merged commit 6c3d049 into open-mpi:v3.1.x Mar 16, 2020
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5 participants