But why doesn't tcp work on loopback?
On Mon, 2009-01-05 at 07:25 -0700, Ralph Castain wrote: > It is currently a known limitation - shared memory currently only > works between procs from the same job. There is an enhancement coming > that will remove this restriction, but it won't be out for some time. > > Ralph > > On Jan 5, 2009, at 1:06 AM, Thomas Ropars wrote: > > > Hi, > > > > I've tried to use ompi-server to connect 2 processes belonging to > > different jobs but running on the same computer. It works when the > > computer has a network interface up. But if the only active network > > interface is the local loop, it doesn't work. > > > > According to what I understood reading the code, it is because no btl > > component can be used in this case. "tcp" is not used because usually > > it is the "sm" component that is used for processes on the same host. > > But in that case it doesn't work because "sm" is supposed to work only > > for processes of the same job. > > > > I know that this use-case is not very frequent :) > > But Is there a solution to make it work ? or is it a known > > limitation ? > > > > Regards > > > > Thomas > > > > _______________________________________________ > > 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
