Justin,
There is no GM MTL. Therefore, the first mpirun allow the use of
every available BTL, while the second one don't allow intra-node
communications or self. The correct mpirun command line should be:
mpirun -np 4 --mca btl gm,self ...
george.
On Mar 27, 2007, at 12:18 PM, Justin Bronder wrote:
Having a user who requires some of the features of gfortran in
4.1.2, I
recently began building a new image. The issue is that "-mca btl
gm" fails
while "-mca mtl gm" works. I have not yet done any benchmarking,
as I was
wondering if the move to mtl is part of the upgrade. Below are the
packages
I rebuilt.
Kernel 2.6.16.27 -> 2.6.20.1
Gcc 4.1.1 -> 4.1.2
GM Drivers 2.0.26 -> 2.0.26 (with patches for newer kernels)
OpenMPI 1.1.4 -> 1.2
The following works as expected:
/usr/local/ompi-gnu/bin/mpirun -np 4 -mca mtl gm --host
node84,node83 ./xhpl
The following fails:
/usr/local/ompi-gnu/bin/mpirun -np 4 -mca btl gm --host
node84,node83 ./xhpl
I've attached gziped files as suggested on the "Getting Help"
section of the
website and the output from the failed mpirun. Both nodes are
known good
Myrinet nodes, using FMA to map.
Thanks in advance,
--
Justin Bronder
Advanced Computing Research Lab
University of Maine, Orono
20 Godfrey Dr
Orono, ME 04473
www.clusters.umaine.edu
<config.log.gz>
<ompi_info.gz>
<error_output>
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