For small ad hoc COWs I'd vote for sshfs too. It may well be as slow as a dog, but it actually has some security, unlike NFS, and is a doddle to make work with no superuser access on the server, unlike NFS.
On Thu, 2009-11-05 at 17:53 -0500, Jeff Squyres wrote: > On Nov 5, 2009, at 5:34 PM, Douglas Guptill wrote: > > > I am currently using sshfs to mount both OpenMPI and my application on > > the "other" computers/nodes. The advantage to this is that I have > > only one copy of OpenMPI and my application. There may be a > > performance penalty, but I haven't seen it yet. > > > > > For a small number of nodes (where small <=32 or sometimes even <=64), > I find that simple NFS works just fine. If your apps aren't IO > intensive, that can greatly simplify installation and deployment of > both Open MPI and your MPI applications IMNSHO. > > But -- every app is different. :-) YMMV. >
