Open MPI uses clock_gettime when it is available, and defaults to gettimeofday only when this better option can't be found. Check that your system has clock_gettime and the resolution of this timer.
Aurélien -- Aurélien Bouteiller, Ph.D. ~~ https://icl.cs.utk.edu/~bouteill/ > Le 5 avr. 2016 à 10:29, Dave Love <d.l...@liverpool.ac.uk> a écrit : > > I can't immediately find a reference, but I thought it had been agreed > some time ago that MPI_Wtime should use high resolution clocks where > they're available. However, 1.10 is still using gettimeofday on > GNU/Linux. Is there a good reason for that? > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2016/04/28887.php
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