I believe he wants two procs/socket, so you’d need ppr:2:socket:pe=7
> On Jan 6, 2016, at 12:14 PM, Nick Papior <nickpap...@gmail.com> wrote: > > I do not think KMP_AFFINITY should affect anything in OpenMPI, it is an MKL > env setting? Or am I wrong? > > Note that these are used in an environment where openmpi automatically gets > the host-file. Hence they are not present. > With intel mkl and openmpi I got the best performance using these, rather > long flags: > > export KMP_AFFINITY=verbose,compact,granularity=core > export KMP_STACKSIZE=62M > export KMP_SETTINGS=1 > > def_flags="--bind-to core -x OMP_PROC_BIND=true --report-bindings" > def_flags="$def_flags -x KMP_AFFINITY=$KMP_AFFINITY" > > # in your case 7: > ONP=7 > flags="$def_flags -x MKL_NUM_THREADS=$ONP -x MKL_DYNAMIC=FALSE" > flags="$flags -x OMP_NUM_THREADS=$ONP -x OMP_DYNAMIC=FALSE" > flags="$flags -x KMP_STACKSIZE=$KMP_STACKSIZE" > flags="$flags --map-by ppr:1:socket:pe=7" > > then run your program: > > mpirun $flags <app> > > A lot of the option flags are duplicated (and strictly not needed), but I > provide them for easy testing changes. > Surely this is application dependent, but for my case it was performing > really well. > > > 2016-01-06 20:48 GMT+01:00 Erik Schnetter <schnet...@gmail.com > <mailto:schnet...@gmail.com>>: > Setting KMP_AFFINITY will probably override anything that OpenMPI > sets. Can you try without? > > -erik > > On Wed, Jan 6, 2016 at 2:46 PM, Matt Thompson <fort...@gmail.com > <mailto:fort...@gmail.com>> wrote: > > Hello Open MPI Gurus, > > > > As I explore MPI-OpenMP hybrid codes, I'm trying to figure out how to do > > things to get the same behavior in various stacks. For example, I have a > > 28-core node (2 14-core Haswells), and I'd like to run 4 MPI processes and 7 > > OpenMP threads. Thus, I'd like the processes to be 2 processes per socket > > with the OpenMP threads laid out on them. Using a "hybrid Hello World" > > program, I can achieve this with Intel MPI (after a lot of testing): > > > > (1097) $ env OMP_NUM_THREADS=7 KMP_AFFINITY=compact mpirun -np 4 > > ./hello-hybrid.x | sort -g -k 18 > > srun.slurm: cluster configuration lacks support for cpu binding > > Hello from thread 0 out of 7 from process 2 out of 4 on borgo035 on CPU 0 > > Hello from thread 1 out of 7 from process 2 out of 4 on borgo035 on CPU 1 > > Hello from thread 2 out of 7 from process 2 out of 4 on borgo035 on CPU 2 > > Hello from thread 3 out of 7 from process 2 out of 4 on borgo035 on CPU 3 > > Hello from thread 4 out of 7 from process 2 out of 4 on borgo035 on CPU 4 > > Hello from thread 5 out of 7 from process 2 out of 4 on borgo035 on CPU 5 > > Hello from thread 6 out of 7 from process 2 out of 4 on borgo035 on CPU 6 > > Hello from thread 0 out of 7 from process 3 out of 4 on borgo035 on CPU 7 > > Hello from thread 1 out of 7 from process 3 out of 4 on borgo035 on CPU 8 > > Hello from thread 2 out of 7 from process 3 out of 4 on borgo035 on CPU 9 > > Hello from thread 3 out of 7 from process 3 out of 4 on borgo035 on CPU 10 > > Hello from thread 4 out of 7 from process 3 out of 4 on borgo035 on CPU 11 > > Hello from thread 5 out of 7 from process 3 out of 4 on borgo035 on CPU 12 > > Hello from thread 6 out of 7 from process 3 out of 4 on borgo035 on CPU 13 > > Hello from thread 0 out of 7 from process 0 out of 4 on borgo035 on CPU 14 > > Hello from thread 1 out of 7 from process 0 out of 4 on borgo035 on CPU 15 > > Hello from thread 2 out of 7 from process 0 out of 4 on borgo035 on CPU 16 > > Hello from thread 3 out of 7 from process 0 out of 4 on borgo035 on CPU 17 > > Hello from thread 4 out of 7 from process 0 out of 4 on borgo035 on CPU 18 > > Hello from thread 5 out of 7 from process 0 out of 4 on borgo035 on CPU 19 > > Hello from thread 6 out of 7 from process 0 out of 4 on borgo035 on CPU 20 > > Hello from thread 0 out of 7 from process 1 out of 4 on borgo035 on CPU 21 > > Hello from thread 1 out of 7 from process 1 out of 4 on borgo035 on CPU 22 > > Hello from thread 2 out of 7 from process 1 out of 4 on borgo035 on CPU 23 > > Hello from thread 3 out of 7 from process 1 out of 4 on borgo035 on CPU 24 > > Hello from thread 4 out of 7 from process 1 out of 4 on borgo035 on CPU 25 > > Hello from thread 5 out of 7 from process 1 out of 4 on borgo035 on CPU 26 > > Hello from thread 6 out of 7 from process 1 out of 4 on borgo035 on CPU 27 > > > > Other than the odd fact that Process #0 seemed to start on Socket #1 (this > > might be an artifact of how I'm trying to detect the CPU I'm on), this looks > > reasonable. 14 threads on each socket and each process is laying out its > > threads in a nice orderly fashion. > > > > I'm trying to figure out how to do this with Open MPI (version 1.10.0) and > > apparently I am just not quite good enough to figure it out. The closest > > I've gotten is: > > > > (1155) $ env OMP_NUM_THREADS=7 KMP_AFFINITY=compact mpirun -np 4 -map-by > > ppr:2:socket ./hello-hybrid.x | sort -g -k 18 > > Hello from thread 0 out of 7 from process 0 out of 4 on borgo035 on CPU 0 > > Hello from thread 0 out of 7 from process 1 out of 4 on borgo035 on CPU 0 > > Hello from thread 1 out of 7 from process 0 out of 4 on borgo035 on CPU 1 > > Hello from thread 1 out of 7 from process 1 out of 4 on borgo035 on CPU 1 > > Hello from thread 2 out of 7 from process 0 out of 4 on borgo035 on CPU 2 > > Hello from thread 2 out of 7 from process 1 out of 4 on borgo035 on CPU 2 > > Hello from thread 3 out of 7 from process 0 out of 4 on borgo035 on CPU 3 > > Hello from thread 3 out of 7 from process 1 out of 4 on borgo035 on CPU 3 > > Hello from thread 4 out of 7 from process 0 out of 4 on borgo035 on CPU 4 > > Hello from thread 4 out of 7 from process 1 out of 4 on borgo035 on CPU 4 > > Hello from thread 5 out of 7 from process 0 out of 4 on borgo035 on CPU 5 > > Hello from thread 5 out of 7 from process 1 out of 4 on borgo035 on CPU 5 > > Hello from thread 6 out of 7 from process 0 out of 4 on borgo035 on CPU 6 > > Hello from thread 6 out of 7 from process 1 out of 4 on borgo035 on CPU 6 > > Hello from thread 0 out of 7 from process 2 out of 4 on borgo035 on CPU 14 > > Hello from thread 0 out of 7 from process 3 out of 4 on borgo035 on CPU 14 > > Hello from thread 1 out of 7 from process 2 out of 4 on borgo035 on CPU 15 > > Hello from thread 1 out of 7 from process 3 out of 4 on borgo035 on CPU 15 > > Hello from thread 2 out of 7 from process 2 out of 4 on borgo035 on CPU 16 > > Hello from thread 2 out of 7 from process 3 out of 4 on borgo035 on CPU 16 > > Hello from thread 3 out of 7 from process 2 out of 4 on borgo035 on CPU 17 > > Hello from thread 3 out of 7 from process 3 out of 4 on borgo035 on CPU 17 > > Hello from thread 4 out of 7 from process 2 out of 4 on borgo035 on CPU 18 > > Hello from thread 4 out of 7 from process 3 out of 4 on borgo035 on CPU 18 > > Hello from thread 5 out of 7 from process 2 out of 4 on borgo035 on CPU 19 > > Hello from thread 5 out of 7 from process 3 out of 4 on borgo035 on CPU 19 > > Hello from thread 6 out of 7 from process 2 out of 4 on borgo035 on CPU 20 > > Hello from thread 6 out of 7 from process 3 out of 4 on borgo035 on CPU 20 > > > > Obviously not right. Any ideas on how to help me learn? The man mpirun page > > is a bit formidable in the pinning part, so maybe I've missed an obvious > > answer. > > > > Matt > > -- > > Matt Thompson > > > > Man Among Men > > Fulcrum of History > > > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org <mailto:us...@open-mpi.org> > > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > > <http://www.open-mpi.org/mailman/listinfo.cgi/users> > > Link to this post: > > http://www.open-mpi.org/community/lists/users/2016/01/28217.php > > <http://www.open-mpi.org/community/lists/users/2016/01/28217.php> > > > > -- > Erik Schnetter <schnet...@gmail.com <mailto:schnet...@gmail.com>> > http://www.perimeterinstitute.ca/personal/eschnetter/ > <http://www.perimeterinstitute.ca/personal/eschnetter/> > _______________________________________________ > users mailing list > us...@open-mpi.org <mailto:us...@open-mpi.org> > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > <http://www.open-mpi.org/mailman/listinfo.cgi/users> > Link to this post: > http://www.open-mpi.org/community/lists/users/2016/01/28218.php > <http://www.open-mpi.org/community/lists/users/2016/01/28218.php> > > > > -- > Kind regards Nick > _______________________________________________ > 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/2016/01/28219.php
