Thank you, Brian: It worked.
Thank you, again. On 4/16/06, Brian Barrett <brbar...@open-mpi.org> wrote: > > On Apr 16, 2006, at 8:18 AM, Sang Chul Choi wrote: > > > 1. I could not find any document except FAQ and mailing list > > for Open MPI. Is there any user manual or something like that? > > Or, the LAM MPI's manual can be used instead? > > Unfortunately, at this time, the only documentation available for > Open MPI is the FAQ and the mailing list. There are some fairly > significant differences between Open MPI and LAM/MPI, so while the > LAM/MPI manuals could be a start, there are some fairly significant > differences. > > > 2. Another question is about installation. > > If I want to use rsh/ssh for Open MPI, do I have to install > > Open MPI on all master and slave nodes? Or, should I use > > something like NSF file system so that even though I installed > > Open MPI on only master node, all the other salve nodes could > > see Open MPI installation in the master node? > > Like LAM/MPI, Open MPI doesn't really care on this point. This is > also somewhat of a religious point -- people seem to have strong > opinions either way. The advantage of the NFS approach is that it > makes it trivial to keep the software installs in sync on all the > nodes. The advantage of the installation on local disk approach is > that there is significantly less strain on the NFS server during > process startup. For development, I tend to go with the NFS > approach, since I'm constantly updating my installation. For large > cluster production installs, I prefer the installation on each node > approach. But unless your cluster is really large (or your NFS > server is really slow) either approach should work. > > > The error I have is from I wanted to run a program on two slave > > nodes but shell complained that there is no orted. It is true > > that there is no installation of Open MPI on each slave node. > > Yes, that is the expected error if you try to run on a node without > an Open MPI installation. If you ensure that a copy of Open MPI is > installed (and in your path) on each node, your problem should go away. > > > Hope this helps, > > Brian > > -- > Brian Barrett > Open MPI developer > http://www.open-mpi.org/ > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- =============================== Live, Learn, and Love! E-mail : goshng at empal dot com goshng at gmail dot com Home : +1-919-468-2578 Address : 1528 Macalpine Circle Morrisville, NC 27560 ===============================
