161 lines
6.9 KiB
Markdown
161 lines
6.9 KiB
Markdown
## BigDL-LLM
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**`bigdl-llm`** is a library for running ***LLM*** (language language model) on your Intel ***laptop*** using INT4 with very low latency.
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*(It is built on top of the excellent work of [llama.cpp](https://github.com/ggerganov/llama.cpp), [gptq](https://github.com/IST-DASLab/gptq), [ggml](https://github.com/ggerganov/ggml), [llama-cpp-python](https://github.com/abetlen/llama-cpp-python), [gptq_for_llama](https://github.com/qwopqwop200/GPTQ-for-LLaMa), [bitsandbytes](https://github.com/TimDettmers/bitsandbytes), [redpajama.cpp](https://github.com/togethercomputer/redpajama.cpp), [gptneox.cpp](https://github.com/byroneverson/gptneox.cpp), [bloomz.cpp](https://github.com/NouamaneTazi/bloomz.cpp/), etc.)*
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### Demos
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See the ***optimized performance*** of `phoenix-inst-chat-7b`, `vicuna-13b-v1.1`, and `starcoder-15b` models on a 12th Gen Intel Core CPU below.
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<p align="center">
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<img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llm-7b.gif" width='33%' /> <img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llm-13b.gif" width='33%' /> <img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llm-15b5.gif" width='33%' />
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<img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llm-models.png" width='85%'/>
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</p>
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### Working with `bigdl-llm`
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<details><summary>Table of Contents</summary>
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- [Install](#install)
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- [Download Model](#download-model)
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- [Run Model](#run-model)
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- [CLI Tool](#cli-tool)
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- [Hugging Face `transformers`-style API](#hugging-face-transformers-style-api)
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- [LangChain API](#langchain-api)
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- [`llama-cpp-python`-style API](#llama-cpp-python-style-api)
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- [`bigdl-llm` Dependence](#bigdl-llm-dependence)
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</details>
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#### Install
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You may install **`bigdl-llm`** as follows:
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```bash
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pip install --pre --upgrade bigdl-llm[all]
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```
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#### Download Model
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You may download any PyTorch model in Hugging Face *Transformers* format (including *FP16* or *FP32* or *GPTQ-4bit*).
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#### Run Model
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You may run the models using **`bigdl-llm`** through one of the following APIs:
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1. [CLI (command line interface) Tool](#cli-tool)
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2. [Hugging Face `transformer`-style API](#hugging-face-transformers-style-api)
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3. [LangChain API](#langchain-api)
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4. [`llama-cpp-python`-style API](#llama-cpp-python-style-api)
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#### CLI Tool
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Currently `bigdl-llm` CLI supports *LLaMA* (e.g., *vicuna*), *GPT-NeoX* (e.g., *redpajama*), *BLOOM* (e.g., *pheonix*) and *GPT2* (e.g., *starcoder*) model architecture; for other models, you may use the `transformer`-style or LangChain APIs.
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- ##### Convert model
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You may convert the downloaded model into native INT4 format using `llm-convert`.
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```bash
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#convert PyTorch (fp16 or fp32) model;
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#llama/bloom/gptneox/starcoder model family is currently supported
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lm-convert "/path/to/model/" --model-format pth --model-family "bloom" --outfile "/path/to/output/"
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#convert GPTQ-4bit model
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#only llama model family is currently supported
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llm-convert "/path/to/model/" --model-format gptq --model-family "llama" --outfile "/path/to/output/"
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```
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- ##### Run model
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You may run the converted model using `llm-cli` (*built on top of `main.cpp` in [llama.cpp](https://github.com/ggerganov/llama.cpp)*)
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```bash
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#help
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#llama/bloom/gptneox/starcoder model family is currently supported
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llm-cli -x gptneox -h
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#text completion
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#llama/bloom/gptneox/starcoder model family is currently supported
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llm-cli -t 16 -x gptneox -m "/path/to/output/model.bin" -p 'Once upon a time,'
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```
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#### Hugging Face `transformers`-style API
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You may run the models using `transformers`-style API in `bigdl-llm`
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- ##### Using native INT4 format
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You may convert Hugging Face *Transformers* models into native INT4 format for maximum performance as follows.
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*(Currently only llama/bloom/gptneox/starcoder model family is supported; for other models, you may use the [Hugging Face `transformers` INT4 format](#using-hugging-face-transformers-int4-format)).*
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```python
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#convert the model
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from bigdl.llm import llm_convert
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bigdl_llm_path = llm_convert(model='/path/to/model/',
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outfile='/path/to/output/', outtype='int4', model_family="llama")
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#load the converted model
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from bigdl.llm.transformers import BigdlForCausalLM
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llm = BigdlForCausalLM.from_pretrained("/path/to/output/model.bin",...)
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#run the converted model
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input_ids = llm.tokenize(prompt)
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output_ids = llm.generate(input_ids, ...)
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output = llm.batch_decode(output_ids)
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```
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- ##### Using Hugging Face `transformers` INT4 format
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You may apply INT4 optimizations to any Hugging Face *Transformers* models as follows.
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```python
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#load Hugging Face Transformers model with INT4 optimizations
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from bigdl.llm.transformers import AutoModelForCausalLM
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model = AutoModelForCausalLM.from_pretrained('/path/to/model/', load_in_4bit=True)
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#run the optimized model
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from transformers import AutoTokenizer
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tokenizer = AutoTokenizer.from_pretrained(model_path)
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input_ids = tokenizer.encode(input_str, ...)
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output_ids = model.generate(input_ids, ...)
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output = tokenizer.batch_decode(output_ids)
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```
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#### LangChain API
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You may convert Hugging Face *Transformers* models into *native INT4* format (currently only *llama*/*bloom*/*gptneox*/*starcoder* model family is supported), and then run the converted models using the LangChain API in `bigdl-llm` as follows.
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```python
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from bigdl.llm.langchain.llms import BigdlLLM
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from bigdl.llm.langchain.embeddings import BigdlLLMEmbeddings
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from langchain.chains.question_answering import load_qa_chain
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embeddings = BigdlLLMEmbeddings(model_path='/path/to/converted/model.bin',
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model_family="llama",...)
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bigdl_llm = BigdlLLM(model_path='/path/to/converted/model.bin',
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model_family="llama",...)
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doc_chain = load_qa_chain(bigdl_llm, ...)
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doc_chain.run(...)
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```
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#### `llama-cpp-python`-style API
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You may also run the converted models using the `llama-cpp-python`-style API in `bigdl-llm` as follows.
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```python
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from bigdl.llm.models import Llama, Bloom, Gptneox
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llm = Bloom("/path/to/converted/model.bin", n_threads=4)
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result = llm("what is ai")
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```
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### `bigdl-llm` Dependence
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The native code/lib in `bigdl-llm` has been built using the following tools; in particular, lower `LIBC` version on your Linux system may be incompatible with `bigdl-llm`.
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| Model family | Platform | Compiler | GLIBC |
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| ------------ | -------- | ------------------ | ----- |
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| llama | Linux | GCC 9.3.1 | 2.17 |
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| llama | Windows | MSVC 19.36.32532.0 | |
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| gptneox | Linux | GCC 9.3.1 | 2.17 |
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| gptneox | Windows | MSVC 19.36.32532.0 | |
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| bloom | Linux | GCC 9.4.0 | 2.29 |
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| bloom | Windows | MSVC 19.36.32532.0 | |
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| starcoder | Linux | GCC 9.4.0 | 2.29 |
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| starcoder | Windows | MSVC 19.36.32532.0 | |
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