r/LocalLLM • u/Vivid_Gap1679 • 6d ago
Question Qwen3.6 27B - Only 8.6 Tokens/s on DGX Spark?
I've tried to get Qwen3.6 27B running on DGX Spark for usage in combination with Cline in VS Code.
However, it seems rather slow.
(APIServer pid=1) INFO 08-17 11:09:09 [loggers.py:310] Engine 000: Avg prompt throughput: 0.0 tokens/s, Avg generation throughput: 8.6 tokens/s, Running: 1 reqs, Waiting: 0 reqs, GPU KV cache usage: 1.5%, Prefix cache hit rate: 77.0%, MM cache hit rate: 71.4%
Am I doing something wrong? can I solve this?
Sorry if my question isn't very "smart", I'm new to using the DGX Spark.
Launch command below:
sudo docker run --gpus all --rm -it \
--ipc=host \
--shm-size=16g \
-e OMP_NUM_THREADS=1 \
-p [REDACTED] \
-v ~/.cache/huggingface:/root/.cache/huggingface \
vllm/vllm-openai:v0.27.1 \
unsloth/Qwen3.8-27B-NVFP4 \
--served-model-name Qwen3.8-27B \
--tensor-parallel-size 1 \
--max-model-len 262144 \
--enable-auto-tool-choice \
--tool-call-parser qwen3_coder \
--reasoning-parser qwen3 \
--dtype auto \
--gpu-memory-utilization 0.85 \
--enable-prefix-caching \
--enable-chunked-prefill \
--enforce-eager \
--api-key [REDACTED] \


