Ministral-3-3B-Instruct-2512 W4A16 BF16Vision

Ampere-friendly serving build of mistralai/Ministral-3-3B-Instruct-2512. Language-model linears are compressed-tensors W4A16; the Pixtral vision tower and multimodal projector remain BF16.

Stock proof

docker run --rm -it \
  --gpus all \
  --ipc=host \
  -p 8001:8000 \
  -v ~/.cache/huggingface:/root/.cache/huggingface \
  vllm/vllm-openai:latest \
  mistralai/Ministral-3-3B-Instruct-2512 \
  --served-model-name Ministral-3-3B-Instruct-2512-stock \
  --dtype bfloat16 \
  --max-model-len 8192 \
  --gpu-memory-utilization 0.7

Serve the packaged artifact

docker run --rm -it \
  --gpus all \
  --ipc=host \
  -p 8002:8000 \
  -v /path/to/Ministral-3-3B-Instruct-2512-W4A16-BF16Vision:/model \
  -v ~/.cache/huggingface:/root/.cache/huggingface \
  vllm/vllm-openai:latest \
  /model \
  --served-model-name Ministral-3-3B-Instruct-2512-W4A16-BF16Vision \
  --dtype bfloat16 \
  --quantization compressed-tensors \
  --max-model-len 8192 \
  --gpu-memory-utilization 0.7

Smoke test

python verify.py --url http://localhost:8002/v1/chat/completions

Notes

  • Best fit: RTX 30xx/40xx Ampere cards.
  • The Pixtral vision tower and multimodal projector remain in BF16; only the language-model decoder is quantized.
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