Single @bench entry that drives the prefill + decode long-context
4-cases sweeps in one invocation, mirroring milestone-1h-gemm. The
individual gqa_helpers/long_ctx/gqa_{prefill,decode}_long_ctx_4cases
modules are now pure helpers (no @bench), reached only via this
umbrella.
Env var contract:
GQA_1H_RUN=1 (required gate)
GQA_1H_SWEEPS=prefill,decode (default: both; pick subset to skip)
GQA_1H_TOPOLOGY=topology.yaml (override)
Output layout:
benches/1H_milestone_output/gqa/long_ctx/
sweep_prefill.json
sweep_decode.json
gqa_prefill_long_ctx_4cases_{latency,traffic,memory,parallelism}.png
gqa_decode_long_ctx_4cases_{latency,traffic,memory,parallelism}.png
The decode bench config drops S_kv from 131_072 to 8_192 so the umbrella
finishes in minutes — the comparative-story bars are the same shape at
8K. The 131K production headline number is recoverable by overriding
the dispatch; the helper docstring notes this.
Outputs (2 sweep JSONs + 8 PNGs) ship in this commit alongside the
umbrella that produced them, following the milestone-1h-gemm pattern
where derived artifacts live with the bench that emits them.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
mukesh
77eece81c4