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Range reads M0/M1 (indexed lookups, Storage trait), ZFP, in-place editing #17

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osobh merged 52 commits from feat/p3-range-zfp-edit into main 2026-09-26 20:42:22 +00:00
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@@ -139,7 +139,12 @@
2.39 → 1.94–2.04 µs (−17%); group B-tree walk 405–411 → 322–351 ns 2.39 → 1.94–2.04 µs (−17%); group B-tree walk 405–411 → 322–351 ns
(−16%); listing the 400-group file through the facade 8.56–8.71 → (−16%); listing the 400-group file through the facade 8.56–8.71 →
8.40–8.42 ms (−2.4%). Net, local metadata reads are slightly faster; the 8.40–8.42 ms (−2.4%). Net, local metadata reads are slightly faster; the
per-header cost is a known, small regression. per-header cost is a known, small regression. Data reads are unchanged:
`concurrent_read --decode-threads 1` (the `BENCHMARKS.md` "Concurrent
reads" workload), `main` and this branch alternating, 2 rounds each, on
the same idle start: every deflate and contiguous full-read row within
±2.4% of `main` (the cache-bound contiguous hyperslab rows vary by up to
±40% between `main`'s own rounds and are not comparable).
- New equivalence harness `clawhdf5-format/tests/storage_equivalence.rs`: - New equivalence harness `clawhdf5-format/tests/storage_equivalence.rs`:
every converted parser runs over the file as a slice and over every converted parser runs over the file as a slice and over
`storage::CountingStorage` — a `Storage` that serves an in-memory buffer `storage::CountingStorage` — a `Storage` that serves an in-memory buffer