There is now quite a variety of nodes on the cluster. We have both Intel and AMD core nodes, high memory nodes, as well has older and new generation hardware. Depending on the properties of your job you may need to specify these. Note that requests for large amounts of memory should normally be handled through a
#SBATCH --mem #G
or
#SBATCH --mem-per-cpu #G
statement in your sbatch file. Substitute the number of GB you need for “#”. The desired property for nodes can be requested in job submission by including a line like this in your sbatch file.
#SBATCH -C constraint
where the value for “constraint” is taken from the table below. You can specify several constraints at once with AND (&) or OR (|). So, to allocate a new Intel node you could use
#SBATCH -C m630|m640|C6420
See “man sbatch” for more details on specifying this. See /etc/slurm/node.conf for all current nodes and features. We recommend that if the job is using the Intel compiler suite, the “intel” constraint should be specified.
| Constraint | property | preemptable by owners |
|---|---|---|
| m610 | nodes with x5650 Intel cores | no |
| m620 | nodes with e5-2650 or e5-2640 v2 Intel cores | yes (on most but not all) |
| m630 | nodes with e5-2640 v3 or v4 Intel cores | yes |
| m640 | nodes with 8160 or 6126 Intel cores | yes |
| C6420 | nodes with 6126 Intel cores | no |
| intel | nodes with Intel cores | yes (on most but not all) |
| amd | nodes with AMD cores | yes |
| x5650 | nodes with older x5650 Intel cores | no |
| e5-26500 | nodes with e5-2650 Intel cores | no |
| e5-2640v2 | nodes with e5-2640v2 Intel cores | yes |
| e5-2640v3 | nodes with e5-2640v3 Intel cores | yes |
| e5-2640v4 | nodes with e5-2640v4 Intel cores | yes |
| 8160 | nodes with 8160 Intel cores | yes |
| 6126 | nodes with 6126 Intel cores | no (on most but not all) |
| R920 | large memory node with Intel cores | yes |
| R815 | large memory node with AMD cores | yes |
| R715 | AMD cores | yes |
| R815 | AMD cores | yes |
| avx | nodes with AVX (Advanced Vector Extensions) support | mixed |
| avx2 | nodes with AVX2 support | mixed |