antirez-recipe quants

MoE quants following the antirez recipe: routed experts quantized hard, everything else protected.

Tensor class Quant Notes
blk.*.ffn_gate_exps, blk.*.ffn_up_exps (ffn_gate_up_exps if fused) GU_TYPE (imatrix) routed-expert gate/up
blk.*.ffn_down_exps DOWN_TYPE (imatrix) routed-expert down (K-quant for quality)
blk.*.ffn_{gate,up,down}_shexp, all attn_*, output.weight Q8_0 shared experts / attention / head
token_embd.weight F16 embeddings
router (ffn_gate_inp), norms, sinks, biases source precision (BF16/F32) never quantized by llama.cpp

Base type Q8_0 + --tensor-type overrides, imatrix calibration (see SPEC per-model imatrix links). Runs on upstream llama.cpp โ€” no fork or patch needed.

Validation per file: gguf-dump tensor audit (experts = GU/DOWN, protection intact), llama-cli smoke load, llama-perplexity spot ppl + --kl-divergence vs BF16 logits.

Files

File Size SHA-256
Ornith-1.5-35B-A3B-Q2-IQ2_XXS-Q2_K.gguf 14215041696 f6848c148c1d4644f103c0e1b735545c262f9779f83e9489b95235fadb345916

Imatrix: https://huggingface.co/mradermacher/Ornith-1.5-35B-A3B-i1-GGUF

Recipe

Antirez recipe on ornith-ai/Ornith-1.5-35B-A3B (BF16 source, ornith-ai/Ornith-1.5-35B-A3B):

  • ffn_gate_exps / ffn_up_exps / ffn_gate_up_exps -> IQ2_XXS
  • ffn_down_exps -> Q2_K
  • attention + shared experts + repr-MTP blocks blk.38/39/40 + output -> Q8_0
  • token embeddings -> F16
  • imatrix: mradermacher/Ornith-1.5-35B-A3B-i1-GGUF

Notes: mradermacher's imatrix does not cover the MTP/draft blocks (blk.38-40); they are forced to Q8_0 with a first-position llama-quantize rule (first matching regex wins). ~14.2 GB, about 2.9 BPW.

Validation (llama.cpp, qwen35moe arch)

  • 12-case hard-smoke eval (temp 0, ctx 15360, model's own embedded chat template): 9/12 PASS; ~27 t/s generation (AMD Vulkan/UMA); fails cases 10567, 1606, juliet-cwe121. Passes both big-code cases.
  • Exact output tokens (own tokenizer) over the 9 solved: 51,528 = 5,725 tok/solved.
  • KL divergence vs official ornith-ai Q8_0 (ds4 short prompts, ctx 60, 2 chunks, CPU): per-chunk KL 0.214 / 0.262 (avg 0.238), delta-p RMS ~10.8%, same-token top-1 86.2 / 81.0%.
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