b. Modify Cluster Configuration

In the section we’ll add a DCV queue to the cluster you created in Create an HPC Cluster.

ParallelCluster UI

Click on the cluster in the parallelcluster ui console and select Edit

Edit Cluster

Click on the Queues tab and click Add Queue

  • Name it dcv and hit enter to save the name.
  • Select g4dn.xlarge
  • Under Advanced Options add the DCV security group we created (Optional if using No-Ingress DCV)

Edit Cluster

On the next screen,

  • Stop Compute Fleet and click confirm
  • Dryrun to validate the config
  • Update to apply the update

Edit Cluster

Once the cluster goes into UPDATE_COMPLETE make sure to Start it:

Edit Cluster

Confirm Update

After the update has completed let’s log back into the cluster and check to make sure we see the new queue:

[ec2-user@ip-172-31-20-178 ~]$ sinfo
compute*     up   infinite     64  idle~ compute-dy-hpc6a-[1-64]
icelake      up   infinite     8   idle~ queue1-dy-icelake-c6i32xlarge-[1-8]
dcv          up   infinite     4   idle~ queue1-dy-dcv-g4dnxlarge-[1-4]

You’ll see the DCV queue, ensure it’s in state UP before proceeding.