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-N == number of nodes
-n == number of cpus (cores/hyperthreads)
so for example :
srun --mpi=openmpi --resv-ports -n16
On 28/07//2012 17:42, Diego Lendoiro
wrote:
openmpi+slurm
Hello everybody;
I've been setting up slurm into a 4 node cluster with 8 cores
per node. One of my users is trying to launch some openmpi
application with:
salloc -N2 mpirun myapp
He claims that the application is running one instance for
each node (using 8 cores each) instead of running only one
instance that uses 16 cores I'm no expert on openmpi but maybe I
forgot to add some config into slurm.conf
MPI related stuff on slurm.conf:
MpiDefault=none
MpiParams=ports=12000-12200
And yes, I'm quite new with slurm, read a bunch of
documentation but right now I'm kind lost with this issue.
Cheers.
--
Diego Lendoiro
Inestable GNU/Linux Users Group Member | http://www.inestable.org
In the beginning was the command line
