Files
colibri/c/tools
FABIOTESS 932f3678b0 convert: --up-bits/--gate-bits/--down-bits per-projection expert quant
Routed experts (gate/up/down) can now take different bit widths via PROJ_BITS.
Motivating config: --xbits 4 --up-bits 3 puts up_proj at int3-g64 (fmt=5, this
PR's format) while gate/down stay int4 — ~8% fewer expert bytes on disk and per
token, at ~zero quality cost. Backed by the OLMoE per-projection ablation posted
to #168: up@int3 matches int4-g64 (56.2 vs 55.8), up@int2 craters (-16pp).

This also supplies the definition the #404 resume manifests already depend on:
current dev records dict(PROJ_BITS) in check_or_record_params and the --indir
progress file in four places, but the global was never defined — every one of
those paths NameErrors at runtime today. The manifests were written for this
interface; this commit is the other half.

Validated: synthetic GLM fixture with --up-bits 3 yields int3-g64 up_proj
(O*(I/64)*24B weight + group scales) and int4-per-row gate/down.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 17:31:05 +01:00
..

Tools

These scripts support model preparation and offline engineering work. They are not runtime dependencies of the C engine.

  • convert_fp8_to_int4.py, download_glm52.py: model preparation
  • make_glm_oracle.py, make_glm_bench_model.py: deterministic fixtures
  • benchmark_cuda_fixture.py, eval_glm.py, fetch_benchmarks.py: benchmarks
  • gen_unicode.py: tokenizer table generation

Run them from c/, for example:

python3 tools/convert_fp8_to_int4.py --selftest
python3 tools/make_glm_bench_model.py --output /tmp/colibri-bench