`add_hwfit_models.py` infers `parameter_count` and `parameters_raw` by
regexing the HF repo name for a `<num>B` token, optionally with an
`-A<num>B` MoE active-param suffix. Repos that don't encode a size in
their name at all (e.g. `zai-org/GLM-4.5`, where the "4.5" is a version
not a parameter count) fall through to the safetensors element-count
path. That path works for unquantized FP16 / BF16 repos but is brittle
in two cases the catalog hits often:
1. Author-bulk runs (`AUTHORS = ["cyankiwi"]`) pull pre-quantized AWQ /
GPTQ / MLX repos. The safetensors metadata stores the packed I32
tensors and a per-dtype `parameters` map, which the script unpacks
via a per-quant pack factor. When the upload doesn't populate that
map (older repos, custom shards), `st.total` is used raw and the
parameter count is off by 4-8x.
2. Repos where the safetensors block is absent from `model_info()`
entirely. The current code returns `None` and silently drops the
model, which then has to be added to `EXTRA_REPOS` by hand with a
literal `parameter_count` string.
Both are exactly what the issue calls out — the regex / safetensors
combo can't size GLM-4.5 by itself because the name has no `<num>B`
and the upstream repo's safetensors block doesn't carry a usable param
total either.
Add a config.json fallback in front of the safetensors path:
- `_fetch_config_json(repo_id)` downloads `config.json` via
`hf_hub_download` (so the standard HF on-disk cache handles
deduplication across runs, no extra cache layer needed). Network /
404 / gated-repo errors return `None` and the caller proceeds to the
safetensors fallback. An in-process `_CONFIG_CACHE` dedupes the
base-model vs. source-repo lookups within a single run.
- `_params_from_config(cfg)` first honours explicit `num_parameters` /
`n_params` / `total_params` fields when present. Otherwise it sums
embeddings + attention (GQA-aware via `num_key_value_heads` and
`head_dim`) + dense MLP (`3 * hidden_size * intermediate_size`,
covering SwiGLU / GeGLU). For MoE configs it picks up both naming
conventions in the wild — `num_experts` / `num_experts_per_tok`
(Qwen3-MoE) and `n_routed_experts` / `n_shared_experts` (GLM-4-MoE,
DeepSeek-V3) — uses `moe_intermediate_size`, and respects
`first_k_dense_replace` so the first N layers stay dense. Active
parameters come out as `num_experts_per_tok + n_shared_experts` of
the routed experts, which matches how each architecture reports its
active count.
- In `_entry_from_modelinfo`, try config.json on the source repo first
(works for unquantized models) and then on the `base_model:` parent
(covers AWQ / GPTQ children whose own config is just a quantization
manifest). Both lookups run only when regex + override + base_model
tag all failed, so the normal author-bulk run still resolves sizes
from names without touching the Hub.
Spot-checks against the three architecture families this script
actually pulls — within ~5% of the documented param counts, which is
well inside the `parameter_count` rounding (one decimal of "B") and
the `min_vram_gb` downstream bucket:
Qwen2.5-7B-Instruct 7.62B (HF card: 7.6B)
Qwen3-30B-A3B 30.5B / 3.34B active (card: 30.5B / 3.3B)
GLM-4.5 352.7B / 33.6B active (card: 355B / 32B)
The safetensors path is unchanged and remains the last resort, so
repos with neither a parsable name nor a fetchable config.json behave
exactly as before.
Closes#955.
4e440a9fd5