Hi, KNEM can improve the performance significantly for intra-node communication and that's why MXM is using it. If you don't want to use it, you can suppress this warning by adding the following to your command line after mpirun: -x MXM_LOG_LEVEL=error
Alina. On Wed, Aug 27, 2014 at 4:28 PM, Brock Palen <bro...@umich.edu> wrote: > We updated our ofed and started to rebuild our MPI builds with mxm 3.0 . > > Now we get warnings bout knem > > [1409145437.578861] [flux-login1:31719:0] shm.c:65 MXM WARN > Could not open the KNEM device file at /dev/knem : No such file or > directory. Won't use knem. > > I have heard about it a little. Should we investigate adding it to our > systems? > Is there a way to suppress this warning? > > > > Brock Palen > www.umich.edu/~brockp > CAEN Advanced Computing > XSEDE Campus Champion > bro...@umich.edu > (734)936-1985 > > > > > _______________________________________________ > 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/2014/08/25166.php >
