The Phase-0 gate is 7 passes over the full row set, which is long enough
that capture_output=True was the wrong default: no rows existed anywhere
until a pass ended, so a slow run and a wedged one looked identical, and
killing either threw away everything measured.
Rows now stream to --out-dir/pass-NN.csv with a flush per line, so an
interrupted run keeps what it had. --resume reuses complete pass files
and reruns incomplete ones -- checked against the row count rather than
merely existing, because a partial file silently averaged in as a whole
pass would corrupt the verdict rather than fail it.
Progress is a tqdm bar over rows, not passes; a pass counter would sit
at 1/7 for twenty minutes and report nothing useful. The row total comes
from probing the binary with --reps=0 (0.8s) rather than reimplementing
the sweep in Python, which would drift from the C++ defaults. There is a
plain-stderr fallback when tqdm is absent -- refusing to start a
benchmark over a missing progress dependency is the wrong trade.
bench_runs/ is gitignored: the new default output path would otherwise
land in git status.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
dtourolleandClaude Opus 5
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