XYZ-Aquila-mini NVFP4 (SM121)

True W4A4 NVFP4 (ModelOpt 0.45) of XYZAILab/XYZ-Aquila-mini @ 4d3b0c45663b8b40f9e6e57b64ff815c09c49904, served natively on NVIDIA GB10 / SM121 with vLLM 0.25.0.

Native model context: max_position_embeddings = 262144 (~256k).
Served window depends on host KV (max_model_len); NIAH uses a max-context protocol (25/50/90% of served max_model_len).

Runtime

docker pull ghcr.io/r0b0tlab/xyz-aquila-mini-nvfp4-vllm:v0.25.0-sm121-702f4814

docker run --gpus all --ipc=host --network host \
  -e PORT=18082 \
  -e MODEL_ID=/models/model \
  -e SERVED_MODEL_NAME=xyz-aquila-nvfp4 \
  -e QUANTIZATION=modelopt_mixed \
  -e KV_CACHE_DTYPE=fp8 \
  -e ATTENTION_BACKEND=flashinfer \
  -e MOE_BACKEND=flashinfer_b12x \
  -e LINEAR_BACKEND=flashinfer_cutlass \
  -e LANGUAGE_MODEL_ONLY=1 \
  -e GPU_MEMORY_UTILIZATION=0.85 \
  -e MAX_MODEL_LEN=32768 \
  -e MAX_NUM_SEQS=16 \
  -v $PWD:/models/model:ro \
  ghcr.io/r0b0tlab/xyz-aquila-mini-nvfp4-vllm:v0.25.0-sm121-702f4814

Long-context tip: raise MAX_MODEL_LEN toward 262144 with MAX_NUM_SEQS=1 and chunked prefill (MAX_NUM_BATCHED_TOKENS can stay 16384). Host-admit before claiming full native ctx.

Native markers: FlashInferCutlassNvFp4LinearKernel, FLASHINFER_B12X MoE, FlashInfer attn arch=sm121, FP8 KV. No Marlin/emulation.

Quant recipe

  • Eligible MLP/experts/lm_head: NVFP4 W4A4
  • Attention: FP8
  • KV cache at serve: FP8
  • Excluded: vision, routers, norms, embeddings, GDN aux, MTP (MTP off in derived config only)
  • Calibration: 512 windowed rows
  • Export: ~21 GiB, 3 shards; hf_quant 291 layers (NVFP4 161 / FP8 130)

Quality results

Suite Score Notes
BFCL v4 multi_turn_base (200) 64.00% campaign · 68.00% core-subset re-run bfcl-eval==2025.12.17 · 0 infra errors
BFCL AST-600 micro 33.33% prior · 33.50% core-subset multiple / parallel / parallel_multiple
AST multiple 35.0% / 35.5% 200 cases
AST parallel 46.5% / 48.5% 200 cases
AST parallel_multiple 18.5% / 16.5% 200 cases
API canaries 5/5 PASS identity, zh math, JSON, tool, needle
NIAH MAX_CONTEXT_TEST (served M=native 262144) 3/3 PASS depths 65,520 / 131,040 / 235,872 (25/50/90% of M−64)
NIAH (legacy served M=32768) 3/3 PASS ~8k/16k/29k — not full native capacity

Do not use diluted BFCL “Overall Acc” CSV columns when only a subset of categories was run.

Throughput (GB10, vllm bench serve)

1024 in / 256 out, ignore_eos, temp 0, 3 reps drop-first:

Conc. Output tok/s Total tok/s mean TTFT ms mean TPOT ms Failed
1 64.6 325.4 694 12.8 0
2 82.4 415.3 2010 16.3 0
4 164.5 829.1 641 21.9 0
8 230.5 1162.1 1009 30.9 0
16 305.7 1540.9 1854 45.3 0

Conversion gates

Gate Status
B1 BF16 CPU real-residency baseline (~70.2 GiB) PASS
C W4A4 PTQ PASS
D packed NVFP4 export audit PASS
E SM121 native serve PASS

Related

License

Weights follow upstream XYZ-Aquila-mini / Apache-2.0 where applicable. Quantization & packaging © r0b0tlab.

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