The main reason we need the above mentioned functionality is because there are some experiments that need to run for a long time. Let's say weeks.

Good point!

. We need to temporarily pause(kill or something else) running HPO task and reassign the resource for other needs.

Oh I see now....

Later, when more important experiments has been completed, we can continue HPO task from the same state.

Quick question when you say the HPO Task, you mean the HPO controller logic Task (i.e. the one launching the training jobs), or do you mean the actual training job itself (i.e. running with a specific set of parameters decided by the HPO controlling task) ?