Slurm constraints

Constraints allow users to make very specific requests to the scheduler such as requesting a specific CPU vendor or architecture features (e.g. AVX512).

To request a constraint, you must add the following line to your submit script:

#SBATCH --constraint=<feature_name>

Constraints are not needed by default and are intended only for advanced users who want to restrict the nodes when multiple architecture types belong to the same partition.

Cluster	Partitions	Feature	Description
TinkerCliffs	normal_q, preemptable_q	amd	Select only nodes with AMD CPUs
TinkerCliffs	normal_q, preemptable_q	intel	Select only nodes with Intel CPUs
TinkerCliffs	normal_q, preemptable_q	avx512	Select only nodes with AVX512
TinkerCliffs	a100_normal_q, a100_preemptable_q	hpe-A100	Select only HPE nodes with A100 GPUs
TinkerCliffs	a100_normal_q, a100_preemptable_q	dgx-A100	Select only DGX nodes with A100 GPUs
Owl	normal_q, preemptable_q	avx512	Select only nodes with AVX512

To request multiple features/constraints, you must add the following line to your script using one of the following operators below:

Function	Symbol	Example
AND	& (ampersand)	#SBATCH --constraint="intel&avx512"
OR	| (pipe)	#SBATCH --constraint="intel|amd"