Tasks 3-4 of the bench-harness plan (refs #251). The surface framework
(1 discarded warmup + N measured reps, median per metric, cross-rep
fingerprint identity enforced — a surface disagreeing with itself is
nondeterminism, never averaged away) and the two library surfaces:
- engine_throughput: 1M-bar seeded walk through an SMA-cross bias graph
(GraphBuilder -> compile -> bootstrap -> VecSource -> run), fingerprint =
the SeriesReducer finalize row.
- ingest_throughput: synthetic 48-byte M1 archive drained via open_columns
with a FRESH DataServer per rep, so the measured drain pays zip inflate +
parse instead of the in-memory FileCache; fingerprint = count + bit-XOR
of the close column.
Quick-mode determinism is pinned in-suite for both surfaces (C1 — the
harness's premise as currently-green tests); full-size numbers wait for the
release driver glue.
claude
e015317183