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2.23 Running Multiple Coordinators on the Same Node

Nitro provides the ability to run multiple coordinators on the same node.

Running multiple coordinators on the same node, is not available if your system configuration uses a policy to limit nodes to a single job (i.e., NODEACCESSPOLICY=SINGLEJOB on Moab).

If your system is configured to allow multiple coordinators on the node:

It is recommended that you instruct your uses to submit Nitro jobs using the nitrosub command. See 5.1 nitrosub Command for more information.
If you prefer that your users do not use the nitrosub command, and instead you prefer that they submit the Nitro jobs directly to your scheduler/resource manager, then you will need to add the ‑‑port‑file option to the bin/launch_nitro.sh and bin/launch_worker.sh scripts to ensure that all coordinators will be able to run.
```
NITRO_OPTIONS="--port-file --job-id ${NITROJOBID} ${NITRO_OPTIONS}"
```
Add the ‑‑port‑file option before the ‑‑job‑id information.