openib: Disable CUDA async by default #5748
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Disable async receive for CUDA under OpenIB. While a performance optimization, it also causes incorrect results for transfers larger than the GPUDirect RDMA limit. This change has been validated and approved by Akshay. References open-mpi#3972 Signed-off-by: Brian Barrett <bbarrett@amazon.com> (cherry picked from commit 9344afd) Signed-off-by: Brian Barrett <bbarrett@amazon.com>
Akshay-Venkatesh
approved these changes
Sep 20, 2018
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@bwbarret would you mind changing the commit message to 'disabling cuda async recv'? Cuda async is broader. |
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@Akshay-Venkatesh kind of ugly to do that for just the branch commits :/. |
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Should be ok then. |
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Disable async receive for CUDA under OpenIB. While a performance
optimization, it also causes incorrect results for transfers
larger than the GPUDirect RDMA limit. This change has been validated
and approved by Akshay.
References #3972
Signed-off-by: Brian Barrett bbarrett@amazon.com
(cherry picked from commit 9344afd)
Signed-off-by: Brian Barrett bbarrett@amazon.com