SDSC Expanse¶
Link to official documentation
- class flow.environments.xsede.ExpanseEnvironment[source]¶
Bases:
DefaultSlurmEnvironment
Environment profile for the Expanse supercomputer.
expanse.sh¶
{# Templated in accordance with: https://www.sdsc.edu/support/user_guides/expanse.html #}
{% extends "slurm.sh" %}
{% block tasks %}
{% set threshold = 0 if force else 0.9 %}
{% set cpu_tasks = operations|calc_tasks('np', parallel, force) %}
{% set gpu_tasks = operations|calc_tasks('ngpu', parallel, force) %}
{% if gpu_tasks %}
{% if not ('gpu' in partition or force) %}
{% raise "GPU operations require a GPU partition!" %}
{% endif %}
{# GPU nodes have 4 NVIDIA V100-32GB SMX2 #}
{% set nn_gpu = gpu_tasks|calc_num_nodes(4) %}
{% set nn = nn_gpu %}
{% else %}
{% if 'gpu' in partition and not force %}
{% raise "Requesting GPU partition, but no GPUs requested!" %}
{% endif %}
{% set nn = nn|default(cpu_tasks|calc_num_nodes(128), true) %}
{% endif %}
{% if 'gpu' in partition %}
{% set gpus_per_node = (gpu_tasks / nn)|round(0, 'ceil')|int %}
{% set cpus_per_node = (cpu_tasks / nn)|round(0, 'ceil')|int %}
{% if cpus_per_node > gpus_per_node * 10 and not force %}
{% raise "Cannot request more than 10 CPUs per GPU." %}
{% endif %}
{% endif %}
{% if partition == 'gpu' %}
#SBATCH -N {{ nn|check_utilization(gpu_tasks, 4, threshold, 'GPU') }}
#SBATCH --ntasks-per-node={{ cpus_per_node }}
#SBATCH --gpus={{ gpu_tasks }}
{% elif partition == 'gpu-shared' %}
{% if nn|default(1, true) > 1 %}
{% raise "Cannot request shared partition with resources spanning multiple nodes." %}
{% endif %}
#SBATCH -N {{ nn|check_utilization(gpu_tasks, 1, threshold, 'GPU') }}
#SBATCH --ntasks-per-node={{ cpus_per_node }}
#SBATCH --gpus={{ gpu_tasks }}
{% elif partition == 'shared' %}
{% if nn|default(1, true) > 1 %}
{% raise "Cannot request shared partition with resources spanning multiple nodes." %}
{% endif %}
#SBATCH -N 1
#SBATCH --ntasks={{ cpu_tasks }}
{% else %}
{# This should cover compute and large-memory #}
#SBATCH -N {{ nn|check_utilization(cpu_tasks, 128, threshold, 'CPU') }}
#SBATCH --ntasks-per-node={{ (128, cpu_tasks)|min }}
{% endif %}
{% endblock tasks %}
{% block header %}
{{- super() -}}
{% set account = account|default(project|get_account_name, true) %}
{% if account %}
#SBATCH -A {{ account }}
{% endif %}
{% endblock header %}