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+
+# TensorRT-LLM
+
+[TensorRT-LLM](https://github.com/NVIDIA/TensorRT-LLM) is optimizes LLM inference on NVIDIA GPUs. It compiles models into a TensorRT engine with in-flight batching, paged KV caching, and tensor parallelism. [AutoDeploy](https://nvidia.github.io/TensorRT-LLM/torch/auto_deploy/auto-deploy.html) accepts Transformers models without requiring any changes. It automatically converts the model to an optimized runtime.
+
+Pass a model id from the Hub to [build_and_run_ad.py](https://github.com/NVIDIA/TensorRT-LLM/blob/main/examples/auto_deploy/build_and_run_ad.py) to run a Transformers model.
+
+```bash
+cd examples/auto_deploy
+python build_and_run_ad.py --model meta-llama/Llama-3.2-1B
+```
+
+Under the hood, AutoDeploy creates an [LLM](https://nvidia.github.io/TensorRT-LLM/llm-api/reference.html#tensorrt_llm.llmapi.LLM) class. It loads the model configuration with [`AutoConfig.from_pretrained`] and extracts any parallelism metadata stored in `tp_plan`. [`AutoModelForCausalLM.from_pretrained`] loads the model with the config and enables Transformers' built-in tensor parallelism.
+
+```py
+from tensorrt_llm._torch.auto_deploy import LLM
+
+llm = LLM(model="meta-llama/Llama-3.2-1B")
+```
+
+TensorRT-LLM extracts the model graph with `torch.export` and applies optimizations. It replaces Transformers attention with TensorRT-LLM [attention kernels](https://github.com/NVIDIA/TensorRT-LLM/tree/main/tensorrt_llm/_torch/attention_backend) and compiles the model into an optimized execution backend.
+
+## Resources
+
+- [TensorRT-LLM docs](https://nvidia.github.io/TensorRT-LLM/) for more detailed usage guides.
+- [AutoDeploy guide](https://nvidia.github.io/TensorRT-LLM/torch/auto_deploy/auto-deploy.html) explains how it works with advanced examples.