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Use slurmd's own detection for node definition #96

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Use slurmd's own detection for node definition #96

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10 changes: 10 additions & 0 deletions tasks/runtime.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,16 @@
notify:
- Restart Munge service

- name: Get slurmd's view of node configuration
command:
cmd: slurmd -C
when: openhpc_slurm_service == 'slurmd'
register: slurmd_conf
changed_when: false
# stdout is e.g.:
# NodeName=nrel-hpc-0 CPUs=16 Boards=1 SocketsPerBoard=2 CoresPerSocket=8 ThreadsPerCore=1 RealMemory=128616
# UpTime=0-00:48:14

- name: Template slurmdbd.conf
template:
src: slurmdbd.conf.j2
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7 changes: 2 additions & 5 deletions templates/slurm.conf.j2
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Expand Up @@ -114,11 +114,8 @@ Epilog=/etc/slurm/slurm.epilog.clean
{% set first_host = group_hosts | first | mandatory('Group "' + group_name + '" contains no hosts in this play - was --limit used?') %}
{% set first_host_hv = hostvars[first_host] %}

NodeName=DEFAULT State=UNKNOWN \
RealMemory={% if 'ram_mb' in group %}{{group.ram_mb}}{% else %}{{ first_host_hv['ansible_memory_mb']['real']['total'] }}{% endif %} \
Sockets={{first_host_hv['ansible_processor_count']}} \
CoresPerSocket={{first_host_hv['ansible_processor_cores']}} \
ThreadsPerCore={{first_host_hv['ansible_processor_threads_per_core']}}
# TODO: support modifying parameters using existing variables
NodeName=DEFAULT {{ first_host_hv['slurmd_conf'].stdout_lines[0] | regex_replace("NodeName=\S+ ", "") }}
{% for node in groups[group_name] %}
NodeName={{ node }}
{% endfor %}{# nodes #}
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