v3.1.x: btl/vader: ensure that the send tag is always written last #5705
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To ensure fast box entries are complete when processed by the receiving process the tag must be written last. This includes a zero header for the next fast box entry (in some cases). This commit fixes two instances where the tag was written too early. In one case, on 32-bit systems it is possible for the tag part of the header to be written before the size. The second instance is an ordering issue. The zero header was being written after the fastbox header. Fixes open-mpi#5375, open-mpi#5638 Signed-off-by: Nathan Hjelm <[email protected]> (cherry picked from commit 850fbff) Signed-off-by: Nathan Hjelm <[email protected]>
jsquyres
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Sep 14, 2018
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The IBM CI (GNU Compiler) build failed! Please review the log, linked below. Gist: https://gist.github.com/ibm-ompi/88b480fb98dfd2bdac939f023e1f8fe6 |
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To ensure fast box entries are complete when processed by the
receiving process the tag must be written last. This includes a zero
header for the next fast box entry (in some cases). This commit fixes
two instances where the tag was written too early. In one case, on
32-bit systems it is possible for the tag part of the header to be
written before the size. The second instance is an ordering issue. The
zero header was being written after the fastbox header.
Fixes #5375, #5638
Signed-off-by: Nathan Hjelm [email protected]
(cherry picked from commit 850fbff)
Signed-off-by: Nathan Hjelm [email protected]