v5.0.x: SMSC support. #9733
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v5.0.x: SMSC support. #9733
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…pport This commit introduces opal/mca/smsc which exposes support for shared-memory single copy mechanisms. The target is to support Linux CMA, XPMEM, and KNEM. This component will initially support btl/sm but will also be used to provide single copy for other components (coll/sm, osc/rdma). Signed-off-by: Nathan Hjelm <[email protected]> (cherry picked from commit d371f80)
This commit adds a component to the shared-memory single-copy framework to support Linux Cross Memory Attach (CMA). This component supports copy_to and copy_from without registration. Signed-off-by: Nathan Hjelm <[email protected]> (cherry picked from commit d74e95c)
This commit adds a knem component to the shared-memory single-copy framework. This modules supports copy_to and copy_from with registration required on the remote peer. Signed-off-by: Nathan Hjelm <[email protected]> (cherry picked from commit 80707bd)
This commit adds a new shared-memory single-copy component supporting Cray/SGI XPMEM. This component supports copy_to, copy_from, and memory mapping. Signed-off-by: Nathan Hjelm <[email protected]> (cherry picked from commit 53891b6)
This commit removes the dedicated shared-memory single-copy support from btl/sm. This support is now provided by the shared-memory single-copy (smsc) framework. The btl_sm_single_copy_mechanism MCA variable has been removed. Use either the component priority parameters (ex. scsm_xpmem_priority) or component selection (--mca smsc) to select the single-copy mechanism. Signed-off-by: Nathan Hjelm <[email protected]> (cherry picked from commit 95eb83f)
Signed-off-by: George Bosilca <[email protected]> (cherry picked from commit 4530d67)
gpaulsen
approved these changes
Dec 9, 2021
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Two PRs here: