Is there any major issues letting all users use it by setting /dev/knem to 666 ? It appears knem by default wants to only allow users of the rdma group (if defined) to access knem.
We are a generic provider and want everyone to be able to use it, just feels strange to restrict it, so I am trying to understand why that is the default. Brock Palen www.umich.edu/~brockp CAEN Advanced Computing XSEDE Campus Champion bro...@umich.edu (734)936-1985 On Aug 27, 2014, at 10:15 AM, Alina Sklarevich <ali...@dev.mellanox.co.il> wrote: > 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 > > _______________________________________________ > 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/2014/08/25169.php
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