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@devreal devreal commented Nov 29, 2019

As pointed out in #6950, the opal_shmem_seg_hdr_t struct allocated at the beginning of each shared memory segment is not actually used but interferes with the alignment of the memory. This PR removes this struct, allowing the shmem components to return page-aligned memory.

Fixes #6950

Signed-off-by: Joseph Schuchart [email protected]

@awlauria awlauria merged commit 1275766 into open-mpi:master Jan 28, 2020
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devreal commented Jan 28, 2020

Should this be cherry-picked to the release branches?

@devreal devreal deleted the remove_shmem_seg_hdr branch October 3, 2022 15:53
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Cache alignment in osc/sm

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