Objective: get the most useful agentic-coding agent out of one DGX Spark — long tool-using runs, big contexts, hours at a time — and write down what actually moved the needle.
Comments very welcome. Much of this was found the hard way, and some of it is probably still wrong or leaving performance on the table. If you run a Spark (or any GB10 / unified-memory box) and know better, please say so — that is why this is public. Open questions are listed at the end.