v3.1.x: pml/ob1: fixed OOS message handling. #4868
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In multithreaded case, it is expensive to release the lock, call the slow match and retake the lock again just to queue the frag. This patch will eliminate number of lock taken by queueing the frag right away and return. cherry-picked from: e3b267a Signed-off-by: Thananon Patinyasakdikul <tpatinya@utk.edu>
Rework the logic to handle the out-of-sequence fragments on the receiver side. A large number of OOS messages are still arriving even in single threaded scenarios. cherry-picked from: 409638b Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
This commit fixes open-mpi#4795 - Fixed typo that sometimes causes deadlock in change of protocol. - Redesigned out of sequence ordering and address the overflow case of sequence number from uint16_t. cherry-picked from: 09cba8b Signed-off-by: Thananon Patinyasakdikul <tpatinya@utk.edu>
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approved these changes
Feb 28, 2018
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PR over from master: #4852 and #4419