On Wed, 9 May 2012, Jiri Polach wrote:
Dear all,
is "-np N" parameter needed for mpirun when running jobs under SGE
environment? All examples in
http://www.open-mpi.org/faq/?category=running#run-n1ge-or-sge
show that "-np N" is used, but in my opinion it should be redundant: mpirun
should determine all parameters from SGE environment anyway. If there is "no
need to specify what nodes to run on" (as stated in FAQ), it should not be
necessary to specify the number of processors either.
I ran some tests and it seems that mpirun correctly gets number of processors
from SGE, but I would like to have some more solid confirmation.
You might want to use a smaller number of processors than those made
available by SGE.
best,
Ricardo Reis
'Non Serviam'
PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering
Computational Fluid Dynamics, High Performance Computing, Turbulence
http://www.lasef.ist.utl.pt
Cultural Instigator @ Rádio Zero
http://www.radiozero.pt
http://www.flickr.com/photos/rreis/
contacts: gtalk: kyriu...@gmail.com skype: kyriusan
Institutional Address:
Ricardo J.N. dos Reis
IDMEC, Instituto Superior Técnico, Technical University of Lisbon
Av. Rovisco Pais
1049-001 Lisboa
Portugal
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