Hi I think you should use the "--host" or "--hostfile" options: http://www.open-mpi.org/faq/?category=running#simple-spmd-run http://www.open-mpi.org/faq/?category=running#mpirun-host Hope this helps Jody
On Wed, Feb 26, 2014 at 8:31 AM, raha khalili <khadije.khal...@gmail.com>wrote: > Dear Users > > This is my first post in open-mpi forum and I am beginner in using mpi. > I want to run a program which does between 4 systems consist of one server > and three nodes with 20 cpus. When I run: *mpirun -np 20 > /home/khalili/espresso-5.0.2/bin/pw.x -in si.in <http://si.in> | tee si.out*, > after writing htop from terminal, it seems the program doesn't use cpus > of three other nodes and just use the cpus of server. Could you tell me > please how do I can use all my cpus. > > Regards > -- > Khadije Khalili > Ph.D Student of Solid-State Physics > Department of Physics > University of Mazandaran > Babolsar, Iran > kh.khal...@stu.umz.ac.ir > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
