Use binary name for slurm step accounting

[mattaezell]

When I spindle srun, Slurm accounting captures two steps: spindle_be and spindle_bootstrap instead of the normal single entry that has the executable name. It would be nice if Spindle could use the -J option to the srun launcher to set the executable name as the job name.

[mplegendre]

We could do that. I'll add it to the queue. It would help get rid of the spindle_bootstrap, thought you'll still see the spindle_be.

Longer term I want to get a PR for JSC merged that would allow for using spindle as a slurm plugin. That would solve both those problems.

[mattaezell]

Thanks for the quick response! I'm not familiar with JSC. We are building the spank plugin but haven't enabled/tested it yet. Are there known issues? I saw #52 but don't fully understand the impact yet.

[mplegendre]

JSC = Juelich Supercomputing Center. They submitted the #52 PR.

The existing spank plugin kind of works, but isn't reliable enough to be used in production. There's a lot of corner cases where it fails. When I originally wrote it spank was missing a lot of capabilities that spindle wanted, and there's some very bad hacks in spindle's spank plugin to compensate. Since then slurm/spank has progressed, and #52 looks to clean a lot of that up.

The catch is that I lack a good test environment for slurm plugins, which I need before merging #52. I need to build one (probably through virtual cluster of slurm containers). But that's a big enough task that it's remained at the back of my queue behind El Capitan work for a while now.