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Reproducible HDF5 conformance sweep and nightly CI job #12

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osobh merged 3 commits from feat/p1-conformance-report into main 2026-09-26 04:45:34 +00:00
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osobhandClaude Opus 5.5 5c2f656fe7 docs: first conformance report and baseline (42b81d9, tank)
CI / test-arm64 (pull_request) Successful in 1m6s
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CI / test (pull_request) Successful in 5m0s
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467 of 697 files read identically to h5py 3.16 / HDF5 2.0, 123 our-error,
15 mismatch (2 an h5py big-endian VL bug), 92 libhdf5 cannot read; no
panics, hangs, crashes or OOM.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:06:00 -05:00
osobhandClaude Opus 5.5 945b13a1f1 ci: nightly conformance sweep 
Runs conformance/run.sh in rust:latest on a schedule and on demand, with its
own venv (pinned h5py/numpy/hdf5plugin/netCDF4) and hdf5-tools. Fails on any
panic, hang, crash or OOM in clawhdf5 and on a drop against
conformance/baseline.json; prints CONFORMANCE.md into the job log and
uploads nothing. Plain git checkout, no JavaScript actions.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:06:00 -05:00
osobhandClaude Opus 5.5 9179aa356e feat(conformance): in-repo, reproducible conformance sweep 
conformance/run.sh fetches eight public HDF5 corpora pinned by commit
(conformance/corpus.txt) into a gitignored cache, reads every file with
clawhdf5 (conformance/probe, a crate outside the workspace) and with
h5py/libhdf5 (ref.py), and the CVE files with h5dump, each under a timeout
and an address-space limit; compare.py classifies the files, report.py
writes CONFORMANCE.md and check.py gates on panics/hangs/crashes/OOM and on
regressions against conformance/baseline.json. ~25 s once cached.

Changes from the ad-hoc audit harness:
- the probe compares non-IEEE-layout floats (N-Bit) and integers with a bit
  offset or reduced precision as the values libhdf5 converts them to, not
  raw file bytes: 8 files that showed as mismatches now read identically;
- ref.py exits without tearing down h5py objects: libhdf5 2.0 aborts while
  freeing them for two files about half the time, which flipped them
  between ok and h5py-cannot-read from run to run;
- the file list is defined (list_files.py): netCDF classic files are left
  out, 11 HDF5 files the ad-hoc sweep missed are in.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:06:00 -05:00