On Sun, 6 Oct 2002, Derek Homeier wrote:
> On Friday, October 4, 2002, at 12:51 AM, Stephen Hocking wrote:
>
> > Inquiring minds and all that - the Xserve's significantly reduced power
> > consumption and heat production over P4s is making it rather
> > interesting...
> >
> Using LAM-MPI here, although on a cluster of mere Quicksilvers. The port
> was not very difficult, I have not ventured on making a fink package of
> it yet since we use Absoft f90 (though this could probably done as a
> source package dependent on system-fortran).
> Meanwhile, I can send you the patch if you are interested.
Developing LAM/MPI on OS X here :). Right now, there are some bugs in the
stable release of LAM/MPI (6.5.6) that can cause issues on OS X. Namely:
* Our cleanup script can't remove our temporary directory properly, as
OS X doesn't allow remove() to be called on a directory
* A strange behavior in select() was causing some internal acocunting
errors that would only allow you to run about 60 jobs before having to
clean up the environment (via the lamclean command)
* A couple of case-sensitivity issues existed (like the standard wrapper
compilers for MPI are generally called mpicc and mpiCC).
We should have 6.5.7 out the door RSN, which will fix all of these
problems, plus a couple more. At which point, it should really be
./configure ; make ; make install. If you use Jaguar, the shared memory
transport agents work great (tested on a dual-800 machine). If you use
10.0 or 10.1, all that is available is TCP (which still works fine).
I should point out (in the interest of fairness) that MPICH (the other
well-known free MPI implementation) will also probably run on OS X, again,
probably with one or two little tweaks. I doubt there is an MPICH
developer lurking on the fink list, so the URL for MPICH is:
http://www-unix.mcs.anl.gov/mpi/mpich/
Oh, and the URL for LAM/MPI is:
http://www.lam-mpi.org/
Hope this helps,
Brian
--
Brian Barrett
LAM/MPI developer and all around nice guy
Have a LAM/MPI day: http://www.lam-mpi.org/
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