release initial code

Co-authored-by: Ying Sheng <sqy1415@gmail.com>
Co-authored-by: Liangsheng Yin <hnyls2002@gmail.com>
Co-authored-by: Zhiqiang Xie <xiezhq@stanford.edu>
Co-authored-by: parasol-aser <3848358+parasol-aser@users.noreply.github.com>
Co-authored-by: LiviaSun <33578456+ChuyueSun@users.noreply.github.com>
Co-authored-by: Cody Yu <hao.yu.cody@gmail.com>

benchmark/dspy/README.md

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+## Install
+
+```
+pip3 install dspy-ai
+```
+
+Turn off cache at https://github.com/stanfordnlp/dspy/blob/34d8420383ec752037aa271825c1d3bf391e1277/dsp/modules/cache_utils.py#L10.
+```
+cache_turn_on = False
+```
+
+## Benchmark SGLang
+```
+python -m sglang.launch_server --model-path meta-llama/Llama-2-7b-chat-hf --port 30000
+```
+
+```
+python3 bench_dspy_intro.py --backend sglang
+```
+
+
+## Benchmark TGI
+```
+docker run --name tgi --rm -ti --gpus all --network host \
+  -v /home/ubuntu/model_weights/Llama-2-7b-chat-hf:/Llama-2-7b-chat-hf \
+  ghcr.io/huggingface/text-generation-inference:1.1.0 \
+  --model-id /Llama-2-7b-chat-hf --num-shard 1  --trust-remote-code \
+  --max-input-length 2048 --max-total-tokens 4096 \
+  --port 24000
+```
+
+```
+python3 bench_dspy_intro.py --backend tgi
+```
+
+
+
+## Benchmark vLLM
+```
+python3 -m vllm.entrypoints.openai.api_server --model meta-llama/Llama-2-7b-chat-hf --disable-log-requests  --port 21000
+```
+
+```
+python3 bench_dspy_intro.py --backend vllm
+```