On Mon, 12 Apr 2004, Josh Hursey wrote:
> Is it possible to specify exactly which processors/nodes to use when
> launching a program via MPI_Comm_spawn?
Yes.
> I would like to allow the user of my application to control which nodes
> my program will use via a conf file [not necessarily a lam-hosts.conf
> file which could be passed to lamboot]. I read that the MPI_Info
> argument might do just this, but is it implemented in LAM-MPI?
It does -- see the man page for all the gory details.
This is quite definitely a LAM extension; the MPI standard encourages
implementations to offer thing kind of functionality, but doesn't provide
much guidance (other than using MPI_Info somehow) on how to do it. :-\
--
{+} Jeff Squyres
{+} jsquyres_at_[hidden]
{+} http://www.lam-mpi.org/
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