Do you know the topology of the cores allocated by Torque (i.e. were
they all on the same nodes, or 8 per node, or a heterogenous
distribution for example ?)
Le 2014-09-23 15:05, Brock Palen a écrit :
Yes the request to torque was procs=64,
We are using cpusets.
the mpirun without -np 64 creates 64 spawned hostnames.
Brock Palen
www.umich.edu/~brockp
CAEN Advanced Computing
XSEDE Campus Champion
bro...@umich.edu
(734)936-1985
On Sep 23, 2014, at 3:02 PM, Ralph Castain <r...@open-mpi.org> wrote:
FWIW: that warning has been removed from the upcoming 1.8.3 release
On Sep 23, 2014, at 11:45 AM, Reuti <re...@staff.uni-marburg.de> wrote:
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Am 23.09.2014 um 19:53 schrieb Brock Palen:
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
And you get 64 lines of output?
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.
--------------------------------------------------------------------------
How many cores are physically installed on this machine - two as mentioned
above?
- -- Reuti
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
