Segment 30
In this sub-session, the assistant first investigated a crash on the RTX 5090 instance that appeared to be an OOM kill but turned out to be a bash syntax error in the OOM recovery loop of benchmark.sh. The fix involved correcting the exit code capture pattern under `set -euo pipefail`. After deploying the fix, Phase 2 of the benchmark failed due to memory pressure, revealing the fundamental issue of pinned pool memory being invisible to the budget. The user rejected a quick 40% cap on the pinned pool as unprincipled, leading the assistant to deeply analyze the memory budget system and design a proper integration where the pinned pool acquires budget when allocating and partitions reduce their reservations when checking out pinned buffers, avoiding double-counting and thrashing.
The Bash Bug and the Budget Blind Spot: A Tale of Two Debugging Layers