SPB Git

spb/localvm-research Public License

Running LLMs larger than memory on a consumer Mac — falsification-driven research: margin-gated deferred refinement, out-of-core verification on Apple Silicon. TR-01 published.

Python 63.2% JavaScript 23.5% CSS 11.8% Shell 0.9% Makefile 0.5%

History of experiments/micro/expH_ssd_feasibility/benchmark.py · clear filter

  1. expH: adaptive per-cell budget (~3s wall) + iostat ground-truth logger
    …
    Short cells (~10ms wall) produced impossible throughput readings;
iostat log validates that measured bytes came from the disk controller.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
    Simon-Pierre Boucher committed 7 h ago (Aug 12, 2026) · 1 file changed +50 −4
  2. expH fix: write test file with F_NOCACHE — first run measured page cache, not SSD
    …
    F_NOCACHE on a read fd does not bypass already-resident pages; writing
the test file normally made every page resident, so 'cold' cells hit
unified memory (42-115 GB/s, impossible for NVMe). Also recreate the
file before the GPU-load phase since the warm phase repopulates cache.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
    Simon-Pierre Boucher committed 7 h ago (Aug 12, 2026) · 1 file changed +21 −8
  3. expH: SSD feasibility benchmark implementation + hypothesis
    …
    Measures internal NVMe read throughput: block sizes 4KB-4MB, random vs
sequential, F_NOCACHE vs warm page cache, 1/4/8 threads, and key cells
under concurrent MLX Metal matmul load. Embeds hardware manifest.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
    Simon-Pierre Boucher committed 8 h ago (Aug 12, 2026) · 1 file changed +232 −7
  4. Bootstrap: charter-compliant skeleton, header enforcement, hardware manifest, experiment scaffolds
    …
    - Repository layout per CLAUDE.md §3
- tools/check_headers.py enforcing §0.1 (58 files pass)
- tools/new_experiment.py scaffolding with seven-field hypothesis block (§10)
- benchmarks/hardware_manifest.py: macOS-native fingerprint (M5 Max / 48GB verified)
- Eight micro-experiment scaffolds (§9, exp A–H)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
    Simon-Pierre Boucher committed 8 h ago (Aug 12, 2026) · 1 file changed +33