can you be more specific on how you measure time ? is this wall time (e.g. it does include mpirun, MPI_Init and MPI_Finalize) ? is this elapsed time between MPI_Init() and MPI_Finalize() ? assuming extra time is spent in MPI, do you know in which subroutine the extra time is spent ? OpenMPI 1.4.1 is very old now, and some collective also might have changed, or different ones might be used by 1.10.2rc3, so that could be fixed by some tuning
Cheers, Gilles On Wed, Feb 24, 2016 at 2:49 PM, Eva <wuzh...@gmail.com> wrote: > I compile the same program by using 1.4.1 and 1.10.2rc3 and then run them > under the same environment. 1.4.1 is 8.89% faster than 1.10.2rc3. Is there > any official performance report for each version upgrade? > > _______________________________________________ > 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/2016/02/28572.php
