Hi,
Just an idea here. Do you use cpusets within Torque ? Did you request
enough cores to torque ?
Maxime Boissonneault
Le 2014-09-23 13:53, Brock Palen a écrit :
I found a fun head scratcher, with openmpi 1.8.2 with torque 5 built with TM
support, on hereto core layouts I get the fun thing:
mpirun -report-bindings hostname <-------- Works
mpirun -report-bindings -np 64 hostname <--------- Wat?
--------------------------------------------------------------------------
A request was made to bind to that would result in binding more
processes than cpus on a resource:
Bind to: CORE
Node: nyx5518
#processes: 2
#cpus: 1
You can override this protection by adding the "overload-allowed"
option to your binding directive.
--------------------------------------------------------------------------
I ran with --oversubscribed and got the expected host list, which matched
$PBS_NODEFILE and was 64 entires long:
mpirun -overload-allowed -report-bindings -np 64 --oversubscribe hostname
What did I do wrong? I'm stumped why one works one doesn't but the one that
doesn't if your force it appears correct.
Brock Palen
www.umich.edu/~brockp
CAEN Advanced Computing
XSEDE Campus Champion
bro...@umich.edu
(734)936-1985
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--
---------------------------------
Maxime Boissonneault
Analyste de calcul - Calcul Québec, Université Laval
Ph. D. en physique
