queueSize, but considering the number of threads used

[ghost]

Hi,

At nextflow.config, we can set queueSize in executor scope, the number of tasks the executor will handle in a parallel manner.
https://www.nextflow.io/docs/latest/config.html?highlight=queuesize#scope-executor
However, when a task uses multiple threads, I guess it's better to specify the total number of threads used by running tasks, rather than specify the total number of tasks sent to the executor.
This will help prevent piled pending tasks for the executor and reduce some random errors.

So I want an option that allows us to specify the maximum number of threads servers can use.
Might need to assume that cpus is properly specified in profiles scope.

Any ideas?