Part 2 — Submit a Job Array

Part 1 got one job onto the scheduler. This part is the jump from one to many: a single submission that fans out into hundreds of tasks, made safe to rerun, then pushed up against the ceiling the scheduler actually enforces.

10:30 to noon. A short lecture, then the work block.

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Hands-On Lab

	What you’ll learn
1. Hello World Array	One submission, four tasks, four logs — the shortest proof an array works
2. Scale the Loop to an Array	Work out how a loop becomes an array, write both files yourself, run 100 filings
3. Make Your Tasks Rerun-Safe	Make a task skip work it has already done, so a resubmit costs nothing
4. Yen-Slurm Array Limits	Where the array ceiling is, and how to get ~992 filings through a scheduler that caps you at 512
5. Bonus — GPUs & Local LLMs	Ask Slurm for a GPU, serve an open-weight model on it, and query it without your data leaving the Yens