Support ntasks in SlurmExecutor #381
Description
Is your feature request related to a problem? Please describe.
The current JobGroup relies on the first executor task to build arguments for sbatch.
It would be convenient to support the sbatch --ntasks argument so that the resource allocation calculation is a little easier than assigning --ntasks-per-node.
Describe the solution you'd like
Add ntasks to SlurmExecutor.
Describe alternatives you've considered
The alternative is to manually calculate potential topology of tasks per node based on the list of executors added to the experiment.