Thanks to everyone who answered, in particular Ake Sandgren, it appears
to be a weird problem with acml that somehow triggers a seg fault in
libmpi, but only when running on Opterons. I'd still be interested in
figuring out how to get a more complete backtrace, but at least the
immediate problem i
For what it's worth, on our cluster I currently do compile VASP with OpenMPI
but we do not include ScaLAPACK because we didn't see a speedup from including
it. So far we haven't seen improvements from using OpenMP in VASP or MKL, so
we're not doing much with OpenMP either.
On our shared memory
