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## Model Description
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LLaMA-2-7B-32K-Chat is an open-source, long-context chat model finetuned from [Llama-2-7B-32K](https://huggingface.co/togethercomputer/LLaMA-2-7B-32K) over high-quality instructions and chat data.
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We build Llama-2-7B-32K-Chat with less than 200 lines of Python script using Together API, and we also make the recipe fully available.
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We hope that this can enable everyone to finetune their own version of [Llama-2-7B-32K](https://huggingface.co/togethercomputer/LLaMA-2-7B-32K) — play with Together API and give us feedback!
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## Limitations and Bias
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## Model Description
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LLaMA-2-7B-32K-Chat is an open-source, long-context chat model finetuned from [Llama-2-7B-32K](https://huggingface.co/togethercomputer/LLaMA-2-7B-32K), over high-quality instructions and chat data.
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We build Llama-2-7B-32K-Chat with less than 200 lines of Python script using [Together API](https://together.ai/blog/api-announcement), and we also make the recipe fully available.
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We hope that this can enable everyone to finetune their own version of [Llama-2-7B-32K](https://huggingface.co/togethercomputer/LLaMA-2-7B-32K) — play with [Together API](https://together.ai/blog/api-announcement) and give us feedback!
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Llama-2-7B-32K-Chat is fine-tuned over 19K single- and multi-round conversations generated by human instructions and Llama-2-70B-Chat outputs,
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The dataset is also released [here](https://huggingface.co/datasets/togethercomputer/llama-instruct).
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## Inference
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You can use the [Together API](https://together.ai/blog/api-announcement) to try out LLaMA-2-7B-32K-Chat for inference.
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The updated inference stack allows for efficient inference.
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To run the model locally, we strongly recommend to install Flash Attention V2, which is necessary to obtain the best performance:
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```
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# Please update the path of `CUDA_HOME`
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export CUDA_HOME=/usr/local/cuda-11.8
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pip install transformers==4.31.0
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pip install sentencepiece
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pip install ninja
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pip install flash-attn --no-build-isolation
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pip install git+https://github.com/HazyResearch/flash-attention.git#subdirectory=csrc/rotary
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```
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You can use this model directly from the Hugging Face Model Hub or fine-tune it on your own data using the OpenChatKit.
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```python
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from transformers import AutoTokenizer, AutoModelForCausalLM
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tokenizer = AutoTokenizer.from_pretrained("togethercomputer/LLaMA-2-7B-32K")
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model = AutoModelForCausalLM.from_pretrained("togethercomputer/LLaMA-2-7B-32K", trust_remote_code=True, torch_dtype=torch.float16)
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input_context = "Your text here"
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input_ids = tokenizer.encode(input_context, return_tensors="pt")
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output = model.generate(input_ids, max_length=128, temperature=0.7)
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output_text = tokenizer.decode(output[0], skip_special_tokens=True)
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print(output_text)
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```
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Alternatively, you can set `trust_remote_code=False` if you prefer not to use flash attention.
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To chat with the model, the prompt is in the format of
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```
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[INST] Write a song about elepants [\INST]
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```
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## Limitations and Bias
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