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@devreal devreal commented Nov 20, 2020

This is to prevent processes from sharing pages, esp. across NUMA domains.

Also: only touch pages, no need to fill them.

Backport of #8070 to 4.1.x

Signed-off-by: Joseph Schuchart schuchart@hlrs.de

Signed-off-by: Joseph Schuchart <schuchart@hlrs.de>
(cherry picked from commit d11ccba)
Signed-off-by: Joseph Schuchart <schuchart@hlrs.de>
(cherry picked from commit 52b52b8)
@devreal devreal changed the title OSC RDMA: put memory for each process into separate pages OSC RDMA: put memory for each process into separate pages [4.1.x] Nov 20, 2020
@jsquyres jsquyres merged commit 2c91509 into open-mpi:v4.1.x Nov 23, 2020
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4 participants