Never mind. I figured it out for myself. Jim
On Sat, 2009-01-03 at 13:51 -0500, Jim Kress wrote: > Hi Jody, > > I did not explain my problem very well. > > I have an application called mdrun. It was compiled and linked using > openMPI. I want to run mdrun on 8 nodes of my cluster in parallel. > Just me. Not multiple users. So I want to launch the openMPI version > of mdrun so that it only uses the input files on the node from which it > is launched (the head node) and does not look for any input files on the > other seven nodes where it spawns the 7 other processes. > > With MPICH I use the procgroup capability and mdrun only looks for its > input files on the node from which it is launched, using the same mdrun > parameters as the ones I tried to use with openMPI > > So, how can I replicate the behavior of MPICH with openMPI? > > Thanks for your help. > > Jim > > > > > > On Sat, 2009-01-03 at 17:46 +0100, jody wrote: > > Hi Jim > > If all of your workers can mount a directory on your head node, > > all can access the data there. > > > > Jody > > > > > > On Sat, Jan 3, 2009 at 4:13 PM, Jim Kress <jimkress...@kressworks.com> > > wrote: > > > I need to use openMPI in a mode where the input and output data reside > > > on one node of my cluster while all the other nodes are just used for > > > computation and send data to/from the head node. > > > > > > All I can find in the documentation are cases showing how to use openMPI > > > for cases where input and output data reside on all the nodes. > > > > > > Will anyone please show me the command line I need to use to accomplish > > > my single data/ multiple node calculation? > > > > > > Thanks. > > > > > > Jim > > > > > > > > > _______________________________________________ > > > users mailing list > > > us...@open-mpi.org > > > http://www.open-mpi.org/mailman/listinfo.cgi/users > > >
