Ralph, I have the same issue and I've been searching how to do this, but I couldn't find.
What exactly must be the string in the host info key to do what Rodrigo described? <<< Inside your master, you would create an MPI_Info key "host" that has a value <<< consisting of a string "host1,host2,host3" identifying the hosts you want <<< your slave to execute upon. Those hosts must have been included in <<< my_hostfile. Include that key in the MPI_Info array passed to your Spawn. I tried to do what you said above but ompi ignores the repetition of hosts. Using Rodrigo's example I did: host info key = "m1,m2,m2,m2,m3" and number of processes = 5 and the result was m1 -> 2 m2 -> 2 m3 -> 1 and not m1 -> 1 m2 -> 3 m3 -> 1 as I wanted. Thanks in advance. Thatyene Ramos On Fri, May 13, 2011 at 9:16 PM, Ralph Castain <r...@open-mpi.org> wrote: > I believe I answered that question. You can use the hostfile info key, or > you can use the host info key - either one will do what you require. > > On May 13, 2011, at 4:11 PM, Rodrigo Silva Oliveira wrote: > > Hi, > > I think I was not specific enough. I need to spawn the copies of a process > in a unique mpi_spawn call. It is, I have to specify a list of machines and > how many copies of the process will be spawned on each one. Is it possible? > > I would be something like that: > > machines #copies > m1 1 > m2 3 > m3 1 > > After an unique call to spawn, I want the copies running in this fashion. I > tried use a hostfile with the option slot, but I'm not sure if it is the > best way. > > hostfile: > > m1 slots=1 > m2 slots=3 > m3 slots=1 > > Thanks > > -- > Rodrigo Silva Oliveira > M.Sc. Student - Computer Science > Universidade Federal de Minas Gerais > www.dcc.ufmg.br/~rsilva <http://www.dcc.ufmg.br/%7Ersilva> > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
