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Follow the PBS Pro Design Document Guidelines.

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1. qmgr -c "export hook pbs_cgroups application/x-config default pbs_cgroups.cfjson"
   This will create a file called "pbs_cgroups.cfjson" in the current directory.
2. Edit the pbs_cgroups.cf json file and set "vnode_per_numa_node" to true
   Example: "vnode_per_numa_node" : true
3. Edit the pbs_cgroups.cf json file and set "use_hyperthreads" to true
   Example: "use_hyperthreads" : true
4. If memory subsystem of cgroups is not mounted on the system, disable 'memory' and 'memsw' from the hook config file. That is,

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If the mount returns empty, then edit the pbs_cgroups.cf json file such that 'enabled' values for 'memory' and 'memsw' under cgroup are false:

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5. Re-import the updated hook config file:
    qmgr -c "import hook pbs_cgroups application/x-config default pbs_cgroups.cfjson"

6. Enable the cgroups hook:
    qmgr -c "set hook pbs_cgroups enabled=true"

7. kill -HUP each Restart pbs_mom so it can get the latest hook information:

   # ps -eaf | grep pbs_mom

  <mom_pid> ... /opt/pbs/sbin/pbs_mom

  # kill <mom_pid>

 # /opt/pbs/sbin/pbs_mom

For sites with large NUMA machines and machines with GPUs, it is recommended to set vnode_per_numa_node to true.

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