[mvapich-discuss] Multithread MPI_Win_unlock fatal error

[Ju How]

Hi all:
     I have a multithread program which uses passive MPI_Get to access
remote memory. I got this error sometimes

Fatal error in MPI_Win_unlock:
Wrong synchronization of RMA calls

i write a test program to reenter MPI_Win_lock of same target in a single
thread , and unlock twice , to simulate this problem, i got the same error.
I doubt MPI_Win_lock is non-reenterable with same target in this version
(1.9) of mvapich2, or it's a bug?
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