SLURM Dev List,
I was wondering if you could help me. I work on a code that for a long
time required all nodes to be completely full (all 12 cores on a
Westmere or all 16 on a Sandy Bridge, etc.). However, we were recently
able to relax that restriction such that all but the last node need be
filled.
Thus, before, all our job allocations had to be multiples of, say, 12
and 16: running on 48, 96, &c. cores. Now, though, what I'd like to do
is ask for --ntasks=100 and have the nodes filled like:
Westmere: 12+12+12+12+12+12+12+12+4
Sandy Bridge: 16+16+16+16+16+16+8
Haswell: 28+28+28+16
However, SLURM is actually allocating for us so that if I ask for
--ntasks=100, I get out a more balanced load:
SLURM_TASKS_PER_NODE=12,11(x8)
So I was wondering: is there a way with salloc/sbatch options to get
SLURM to fill the nodes such that it fully allocates the first node,
then second, and so on and leaves the last partly filled?
Thanks,
Matt
--
Matt Thompson SSAI, Sr Software Test Engr
NASA GSFC, Global Modeling and Assimilation Office
Code 610.1, 8800 Greenbelt Rd, Greenbelt, MD 20771
Phone: 301-614-6712 Fax: 301-614-6246
