btl/sm: avoid using xpmem for fast boxes #9880
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xpmem has different behvior than other shared memory support mechanisms. in particular, any xpmem-attached regions in a process will become invalid once the exporting process exits. Under certain circumstances, this behavior can result in SIGBUS errors during mpi finalize. Related to open-mpi#9868 Signed-off-by: Howard Pritchard <[email protected]>
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@hppritcha Will this be applicable to older release branches (v4.1.x)? |
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Yes it would. |
gpaulsen
approved these changes
Jan 28, 2022
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looks good to me. |
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xpmem has different behvior than other shared memory support mechanisms.
in particular, any xpmem-attached regions in a process will become invalid
once the exporting process exits.
Under certain circumstances, this behavior can result in SIGBUS errors
during mpi finalize.
Related to #9868
Signed-off-by: Howard Pritchard [email protected]