Loris Bennett <loris.benn...@fu-berlin.de> writes: > Hi David, > > david martin <vila...@gmail.com> writes: > >> >> >> Hi, >> >> I would like to submit a job that requires 3Go. The problem is that I have >> 70 nodes available each node with 2Gb memory. >> >> So the command sbatch --mem=3G will wait for ressources to become available. >> >> Can I run sbatch and tell the cluster to use the 3Go out of the 70Go >> available or is that a particular setup ? meaning is the memory >> restricted to each node ? or should i allocate two nodes so that i >> have 2x4Go availble ? > > Check > > man sbatch > > You'll find that --mem means memory per node. Thus, if you specify 3GB > but all the nodes have 2GB, your job will wait forever (or until you buy > more RAM and reconfigure Slurm). > > You probably want --mem-per-cpu, which is actually more like memory per > task.
The above should read You probably want --mem-per-cpu, which is actually more like memory per core and thus memory per task if you have tasks per core set to 1. > This is obviously only going to work if your job can actually run > on more than one node, e.g. is MPI enabled. > > Cheers, > > Loris -- Dr. Loris Bennett (Mr.) ZEDAT, Freie Universität Berlin Email loris.benn...@fu-berlin.de
