Same window, i.e.: Process 0: Win_lock(MPI_LOCK_SHARED, target=A, window=win) Win_lock(MPI_LOCK_SHARED, target=B, window=win) Sebastian On 30 Mar 2017, at 06:24, Jeff Hammond <[email protected]> wrote:

Same window or different windows?

Jeff

On Wed, Mar 29, 2017 at 5:59 PM Sebastian Rinke <[email protected]> wrote: Dear all,

I have some issue with MPI_Win_lock in MPICH-3.1.4 on Blue Gene/Q.

Here is my example:

Process 0:

Win_lock(MPI_LOCK_SHARED, target=A) Win_lock(MPI_LOCK_SHARED, target=B)

No matter what I use for A and B (given A != B), a process cannot acquire more than one lock at a time.

To my understanding, it should be possible to acquire more than one lock.

Can you confirm this issue?

Thanks, Sebastian _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss -- Jeff Hammond [email protected] http://jeffhammond.github.io/ _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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