Update README.md

README.md

@@ -13,4 +13,11 @@ conda create -n vllm8 python=3.10 -y && conda activate vllm8
 pip install -U git+https://github.com/vllm-project/vllm.git@a134ef6
 
 python -m vllm.entrypoints.openai.api_server --model cat-llama-3-8b-awq-q128-w4-gemm
+
+```
+
+To use 2 GPUs add `--tensor-parallel-size 2 --gpu-memory-utilization 0.95`:
+
+```
+python -m vllm.entrypoints.openai.api_server --model cat-llama-3-8b-awq-q128-w4-gemm --tensor-parallel-size 2 --gpu-memory-utilization 0.95
 ```