When the Instances ("num_instances") property in a cluster configuration is left blank, the cluster does not scale (no instances are allocated). To prevent this issue, specify a value for this property (maximum number of instances that can run at one time).

A static evaluator can only run concurrent jobs belonging to the same project and job definition (for example, design point studies). It cannot run jobs from different projects (or different job definitions within the same project) concurrently.

On Rocky Linux 8.x, the Autoscaler may fail to parse the ProcessLauncher output with the following error:

“stderr': "/bin/sh: which: line 1: syntax error: unexpected end of file\n/bin/sh: error importing function definition for `which'\n"}”

This is caused by a faulty alias configuration.

To resolve this issue, move or remove the file /etc/profile.d/which2.sh.