Thank you! I will try it!
What would -cpus-per-proc 4 -n 16 do? Ron --- Ron Cohen recoh...@gmail.com skypename: ronaldcohen twitter: @recohen3 On Fri, Mar 25, 2016 at 12:38 PM, Ralph Castain <r...@open-mpi.org> wrote: > Add -rank-by node to your cmd line. You’ll still get 4 procs/node, but they > will be ranked by node instead of consecutively within a node. > > > >> On Mar 25, 2016, at 9:30 AM, Ronald Cohen <recoh...@gmail.com> wrote: >> >> I am using >> >> mpirun --map-by ppr:4:node -n 16 >> >> and this loads the processes in round robin fashion. This seems to be >> twice as slow for my code as loading them node by node, 4 processes >> per node. >> >> How can I not load them round robin, but node by node? >> >> Thanks! >> >> Ron >> >> >> --- >> Ron Cohen >> recoh...@gmail.com >> skypename: ronaldcohen >> twitter: @recohen3 >> >> --- >> Ronald Cohen >> Geophysical Laboratory >> Carnegie Institution >> 5251 Broad Branch Rd., N.W. >> Washington, D.C. 20015 >> _______________________________________________ >> 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/2016/03/28828.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/2016/03/28829.php
