Manually adding nodes

Since version 1.0.9 users defined with the admin role in az-hop are now admins for clusters in Cycle Cloud. This means that nodes can be added or removed from the Cycle Cloud monitoring page.

Note: This feature is restricted to the OpenPBS scheduler.

To add nodes :

Browse to the Cycle Cloud portal,
In the Actions menu of the Nodes tab select Add,

Select the Node Array type
Check Colocate nodes if you need to run MPI or latency sensitive applications in between these nodes
- In this case create a new placement group
Check Keep Alive to manually start and stop the nodes, autoscaling will be disabled for these instances
Set how many nodes to add
Click Add

Note: When using PBS, and if Colocate nodes is not checked then you should specify ungrouped=true in the resource constraints of the qsub command.

qsub -l select=1:slot_type=htc:ungrouped=true -I