Document how to configure /dev/shm size

[nrober734]

I had difficulty launching this stack successfully out of the box, and had to manually increase the Docker /dev/shm with an additional volumeMount as:

volumeMounts:
  - name: {{ .Release.Name }}-storage
    mountPath: /data
  - name: shm
    mountPath: /dev/shm
  
volumes:
    - name: shm
      emptyDir:
        medium: Memory
        sizeLimit: 20Gi

to avoid NCCL shared memory allocation issues as described in vllm-project/vllm#6574. It might be nice to add this to the tutorial steps and expose an expedient configuration option here for anyone facing similar issues.

Thanks!

[ApostaC]

Thanks for the contribution! Would you like to create a PR for this issue?

[ApostaC]

Closing this issue as it's completed by PR #105