From cf6a620bae83f87ba0fe9bcda8b1bda8d972988c Mon Sep 17 00:00:00 2001
From: Yuwen Hu <54161268+Oscilloscope98@users.noreply.github.com>
Date: Wed, 6 Sep 2023 15:38:45 +0800
Subject: [PATCH] [LLM] BigDL-LLM Documentation Initial Version (#8833)

* Change order of LLM in header

* Some updates to footer

* Add BigDL-LLM index page and basic file structure

* Update index page for key features

* Add initial content for BigDL-LLM in 5 mins

* Improvement to footnote

* Add initial contents based on current contents we have

* Add initial quick links

* Small fix

* Rename file

* Hide cli section for now and change model supports to examples

* Hugging Face format -> Hugging Face transformers format

* Add placeholder for GPU supports

* Add GPU related content structure

* Add cpu/gpu installation initial contents

* Add initial contents for GPU supports

* Add image link to LLM index page

* Hide tips and known issues for now

* Small fix

* Update based on comments

* Small fix

* Add notes for Python 3.9

* Add placehoder optimize model & reveal CLI; small revision

* examples add gpu part

* Hide CLI part again for first version of merging

* add keyfeatures-optimize_model part (#1)

* change gif link to the ones hosted on github

* Small fix

---------

Co-authored-by: plusbang <binbin1.deng@intel.com>
Co-authored-by: binbin Deng <108676127+plusbang@users.noreply.github.com>
---
 .../source/_templates/sidebar_quicklinks.html | 31 ++++++--
 docs/readthedocs/source/_toc.yml              | 47 ++++++++++--
 .../doc/LLM/Overview/KeyFeatures/cli.md       | 40 +++++++++++
 .../LLM/Overview/KeyFeatures/gpu_supports.md  | 47 ++++++++++++
 .../KeyFeatures/hugging_face_format.md        | 54 ++++++++++++++
 .../doc/LLM/Overview/KeyFeatures/index.rst    | 19 +++++
 .../LLM/Overview/KeyFeatures/langchain_api.md | 57 +++++++++++++++
 .../LLM/Overview/KeyFeatures/native_format.md | 32 +++++++++
 .../Overview/KeyFeatures/optimize_model.md    | 22 ++++++
 .../KeyFeatures/transformers_style_api.rst    | 10 +++
 .../source/doc/LLM/Overview/examples.rst      |  9 +++
 .../source/doc/LLM/Overview/examples_cpu.md   | 26 +++++++
 .../source/doc/LLM/Overview/examples_gpu.md   | 26 +++++++
 .../source/doc/LLM/Overview/install.rst       |  7 ++
 .../source/doc/LLM/Overview/install_cpu.md    | 71 +++++++++++++++++++
 .../source/doc/LLM/Overview/install_gpu.md    | 65 +++++++++++++++++
 .../source/doc/LLM/Overview/known_issues.md   |  1 +
 .../source/doc/LLM/Overview/llm.md            | 68 ++++++++++++++++++
 docs/readthedocs/source/doc/LLM/index.rst     | 55 +++++++++++++-
 .../source/doc/PythonAPI/LLM/transformers.rst |  2 +-
 docs/readthedocs/source/index.rst             | 21 ++++--
 21 files changed, 689 insertions(+), 21 deletions(-)
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/cli.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/gpu_supports.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/hugging_face_format.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/index.rst
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/langchain_api.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/native_format.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/optimize_model.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/transformers_style_api.rst
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/examples.rst
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/examples_cpu.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/examples_gpu.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/install.rst
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/install_cpu.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/install_gpu.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/known_issues.md
 create mode 100644 docs/readthedocs/source/doc/LLM/Overview/llm.md

diff --git a/docs/readthedocs/source/_templates/sidebar_quicklinks.html b/docs/readthedocs/source/_templates/sidebar_quicklinks.html
index b691dc62..6d701556 100644
--- a/docs/readthedocs/source/_templates/sidebar_quicklinks.html
+++ b/docs/readthedocs/source/_templates/sidebar_quicklinks.html
@@ -2,6 +2,18 @@
     <p class="bd-links__title">Quick Links</p>
     <div class="navbar-nav">
         <ul class="nav">
+            <li>
+                <strong class="bigdl-quicklinks-section-title">LLM QuickStart</strong>
+                <input id="quicklink-cluster-llm" type="checkbox" class="toctree-checkbox" />
+                <label for="quicklink-cluster-llm" class="toctree-toggle">
+                    <i class="fa-solid fa-chevron-down"></i>
+                </label>
+                <ul class="nav bigdl-quicklinks-section-nav">
+                    <li>
+                        <a href="doc/LLM/Overview/llm.html">BigDL-LLM in 5 minutes</a>
+                    </li>
+                </ul>
+            </li>
             <li>
                 <strong class="bigdl-quicklinks-section-title">Orca QuickStart</strong>
                 <input id="quicklink-cluster-orca" type="checkbox" class="toctree-checkbox" />
@@ -12,10 +24,10 @@
                     <li>
                         <a href="doc/Orca/Howto/tf2keras-quickstart.html">Scale TensorFlow 2 Applications</a>
                     </li>
-		    <li>
+                    <li>
                         <a href="doc/Orca/Howto/pytorch-quickstart.html">Scale PyTorch Applications</a>
                     </li>
-		    <li>
+                    <li>
                         <a href="doc/Orca/Howto/ray-quickstart.html">Run Ray programs on Big Data clusters</a>
                     </li>
                 </ul>
@@ -31,16 +43,20 @@
                         <a href="doc/Nano/QuickStart/pytorch_train_quickstart.html">PyTorch Training Acceleration</a>
                     </li>
                     <li>
-                        <a href="doc/Nano/QuickStart/pytorch_quantization_inc_onnx.html">PyTorch Inference Quantization with ONNXRuntime Acceleration </a>
+                        <a href="doc/Nano/QuickStart/pytorch_quantization_inc_onnx.html">PyTorch Inference Quantization
+                            with ONNXRuntime Acceleration </a>
                     </li>
                     <li>
-                        <a href="doc/Nano/QuickStart/pytorch_openvino.html">PyTorch Inference Acceleration using OpenVINO</a>
+                        <a href="doc/Nano/QuickStart/pytorch_openvino.html">PyTorch Inference Acceleration using
+                            OpenVINO</a>
                     </li>
                     <li>
-                        <a href="doc/Nano/QuickStart/tensorflow_train_quickstart.html">Tensorflow Training Acceleration</a>
+                        <a href="doc/Nano/QuickStart/tensorflow_train_quickstart.html">Tensorflow Training
+                            Acceleration</a>
                     </li>
                     <li>
-                        <a href="doc/Nano/QuickStart/tensorflow_quantization_quickstart.html">Tensorflow Quantization Acceleration</a>
+                        <a href="doc/Nano/QuickStart/tensorflow_quantization_quickstart.html">Tensorflow Quantization
+                            Acceleration</a>
                     </li>
                 </ul>
             </li>
@@ -67,7 +83,8 @@
                 </label>
                 <ul class="nav bigdl-quicklinks-section-nav">
                     <li>
-                        <a href="doc/Chronos/QuickStart/chronos-tsdataset-forecaster-quickstart.html">Basic Forecasting</a>
+                        <a href="doc/Chronos/QuickStart/chronos-tsdataset-forecaster-quickstart.html">Basic
+                            Forecasting</a>
                     </li>
                     <li>
                         <a href="doc/Chronos/QuickStart/chronos-autotsest-quickstart.html">Forecasting using AutoML</a>
diff --git a/docs/readthedocs/source/_toc.yml b/docs/readthedocs/source/_toc.yml
index fdba5c9a..9cba0641 100644
--- a/docs/readthedocs/source/_toc.yml
+++ b/docs/readthedocs/source/_toc.yml
@@ -19,6 +19,46 @@ subtrees:
     - file: doc/Application/powered-by
       title: "Powered by"
 
+  - entries:
+    - file: doc/LLM/index
+      title: "LLM"
+      subtrees:
+        - entries:
+          - file: doc/LLM/Overview/llm
+            title: "LLM in 5 minutes"
+          - file: doc/LLM/Overview/install
+            title: "Installation"
+            subtrees:
+              - entries:
+                - file: doc/LLM/Overview/install_cpu
+                  title: "CPU"
+                - file: doc/LLM/Overview/install_gpu
+                  title: "GPU"
+          - file: doc/LLM/Overview/KeyFeatures/index
+            title: "Key Features"
+            subtrees:
+              - entries:
+                - file: doc/LLM/Overview/KeyFeatures/transformers_style_api
+                  subtrees:
+                    - entries:
+                      - file: doc/LLM/Overview/KeyFeatures/hugging_face_format
+                      - file: doc/LLM/Overview/KeyFeatures/native_format
+                - file: doc/LLM/Overview/KeyFeatures/optimize_model
+                - file: doc/LLM/Overview/KeyFeatures/langchain_api
+                # - file: doc/LLM/Overview/KeyFeatures/cli
+                - file: doc/LLM/Overview/KeyFeatures/gpu_supports
+          - file: doc/LLM/Overview/examples
+            title: "Examples"
+            subtrees:
+              - entries:
+                - file: doc/LLM/Overview/examples_cpu
+                  title: "CPU"
+                - file: doc/LLM/Overview/examples_gpu
+                  title: "GPU"
+          # - file: doc/LLM/Overview/known_issues
+          #   title: "Tips and Known Issues"
+          - file: doc/PythonAPI/LLM/index
+            title: "API Reference"
 
   - entries:
     - file: doc/Orca/index
@@ -329,13 +369,6 @@ subtrees:
                   - file: doc/PPML/QuickStart/tpc-ds_with_sparksql_on_k8s
                   - file: doc/PPML/Overview/azure_ppml_occlum
                   - file: doc/PPML/Overview/secure_lightgbm_on_spark
-  - entries:
-    - file: doc/LLM/index
-      title: "LLM"
-      subtrees:
-        - entries:
-          - file: doc/PythonAPI/LLM/index
-            title: "API Reference"
 
   - entries:
     - file: doc/UserGuide/contributor
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/cli.md b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/cli.md
new file mode 100644
index 00000000..7c21f2f8
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/cli.md
@@ -0,0 +1,40 @@
+# CLI (Command Line Interface) Tool
+
+```eval_rst
+
+.. note:: 
+
+   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 ``transformers``-style or LangChain APIs.
+```
+
+## Convert Model
+
+You may convert the downloaded model into native INT4 format using `llm-convert`.
+
+```bash
+# convert PyTorch (fp16 or fp32) model; 
+# llama/bloom/gptneox/starcoder model family is currently supported
+llm-convert "/path/to/model/" --model-format pth --model-family "bloom" --outfile "/path/to/output/"
+
+# convert GPTQ-4bit model
+# only llama model family is currently supported
+llm-convert "/path/to/model/" --model-format gptq --model-family "llama" --outfile "/path/to/output/"
+```
+
+## Run Model
+
+You may run the converted model using `llm-cli` or `llm-chat` (built on top of `main.cpp` in [`llama.cpp`](https://github.com/ggerganov/llama.cpp))
+
+```bash
+# help
+# llama/bloom/gptneox/starcoder model family is currently supported
+llm-cli -x gptneox -h
+
+# text completion
+# llama/bloom/gptneox/starcoder model family is currently supported
+llm-cli -t 16 -x gptneox -m "/path/to/output/model.bin" -p 'Once upon a time,'
+
+# chat mode
+# llama/gptneox model family is currently supported
+llm-chat -m "/path/to/output/model.bin" -x llama
+```
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/gpu_supports.md b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/gpu_supports.md
new file mode 100644
index 00000000..7cbd65c3
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/gpu_supports.md
@@ -0,0 +1,47 @@
+# GPU Supports
+
+You may apply INT4 optimizations to any Hugging Face *Transformers* models on device with Intel GPUs as follows:
+
+```python
+# import ipex
+import intel_extension_for_pytorch as ipex
+
+# load Hugging Face Transformers model with INT4 optimizations on Intel GPUs
+from bigdl.llm.transformers import AutoModelForCausalLM
+
+model = AutoModelForCausalLM.from_pretrained('/path/to/model/',
+                                             load_in_4bit=True,
+                                             optimize_model=False)
+model = model.to('xpu')
+```
+
+```eval_rst
+.. note::
+
+   You may apply INT8 optimizations as follows:
+
+   .. code-block:: python
+
+      model = AutoModelForCausalLM.from_pretrained('/path/to/model/',
+                                                   load_in_low_bit="sym_int8",
+                                                   optimize_model=False)
+      model = model.to('xpu')
+```
+
+After loading the Hugging Face *Transformers* model, you may easily run the optimized model as follows:
+
+```python
+# run the optimized model
+from transformers import AutoTokenizer
+
+tokenizer = AutoTokenizer.from_pretrained(model_path)
+input_ids = tokenizer.encode(input_str, ...).to('xpu')
+output_ids = model.generate(input_ids, ...)
+output = tokenizer.batch_decode(output_ids)
+```
+
+```eval_rst
+.. seealso::
+
+   See the complete examples `here <https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/GPU>`_
+```
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/hugging_face_format.md b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/hugging_face_format.md
new file mode 100644
index 00000000..11b1a040
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/hugging_face_format.md
@@ -0,0 +1,54 @@
+# Hugging Face ``transformers`` Format
+
+## Load in Low Precision
+You may apply INT4 optimizations to any Hugging Face *Transformers* models as follows:
+
+```python
+# load Hugging Face Transformers model with INT4 optimizations
+from bigdl.llm.transformers import AutoModelForCausalLM
+
+model = AutoModelForCausalLM.from_pretrained('/path/to/model/', load_in_4bit=True)
+```
+
+After loading the Hugging Face *Transformers* model, you may easily run the optimized model as follows:
+
+```python
+# run the optimized model
+from transformers import AutoTokenizer
+
+tokenizer = AutoTokenizer.from_pretrained(model_path)
+input_ids = tokenizer.encode(input_str, ...)
+output_ids = model.generate(input_ids, ...)
+output = tokenizer.batch_decode(output_ids)
+```
+
+```eval_rst
+.. seealso::
+
+   See the complete examples `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/transformers/transformers_int4>`_
+
+.. note::
+
+   You may apply more low bit optimizations (including INT8, INT5 and INT4) as follows:
+
+   .. code-block:: python
+
+      model = AutoModelForCausalLM.from_pretrained('/path/to/model/', load_in_low_bit="sym_int5")
+
+   See the complete example `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/transformers/transformers_low_bit>`_.
+```
+
+## Save & Load
+After the model is optimized using INT4 (or INT8/INT5), you may save and load the optimized model as follows:
+
+```python
+model.save_low_bit(model_path)
+
+new_model = AutoModelForCausalLM.load_low_bit(model_path)
+```
+
+```eval_rst
+.. seealso::
+
+   See the examples `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/transformers/transformers_low_bit>`_
+```
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/index.rst b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/index.rst
new file mode 100644
index 00000000..4914196b
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/index.rst
@@ -0,0 +1,19 @@
+BigDL-LLM Key Features
+================================
+
+You may run the LLMs using ``bigdl-llm`` through one of the following APIs:
+
+* |transformers_style_api|_
+
+  * |hugging_face_transformers_format|_
+  * `Native Format <./native_format.html>`_
+
+* `General PyTorch Model Supports <./langchain_api.html>`_
+* `LangChain API <./langchain_api.html>`_
+* `GPU Supports <./gpu_supports.html>`_
+
+.. |transformers_style_api| replace:: ``transformers``-style API
+.. _transformers_style_api: ./transformers_style_api.html
+
+.. |hugging_face_transformers_format| replace:: Hugging Face ``transformers`` Format
+.. _hugging_face_transformers_format: ./hugging_face_format.html
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/langchain_api.md b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/langchain_api.md
new file mode 100644
index 00000000..c954402b
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/langchain_api.md
@@ -0,0 +1,57 @@
+# LangChain API
+
+You may run the models using the LangChain API in `bigdl-llm`.
+
+## Using Hugging Face `transformers` INT4 Format
+
+You may run any Hugging Face *Transformers* model (with INT4 optimiztions applied) using the LangChain API as follows:
+
+```python
+from bigdl.llm.langchain.llms import TransformersLLM
+from bigdl.llm.langchain.embeddings import TransformersEmbeddings
+from langchain.chains.question_answering import load_qa_chain
+
+embeddings = TransformersEmbeddings.from_model_id(model_id=model_path)
+bigdl_llm = TransformersLLM.from_model_id(model_id=model_path, ...)
+
+doc_chain = load_qa_chain(bigdl_llm, ...)
+output = doc_chain.run(...)
+```
+
+```eval_rst
+.. seealso::
+
+   See the examples `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/langchain/transformers_int4>`_.
+```
+
+## Using Native INT4 Format
+
+You may also convert Hugging Face *Transformers* models into native INT4 format, and then run the converted models using the LangChain API as follows.
+
+```eval_rst
+.. note::
+
+   * Currently only llama/bloom/gptneox/starcoder/chatglm model families are supported; for other models, you may use the Hugging Face ``transformers`` INT4 format as described `above <./langchain_api.html#using-hugging-face-transformers-int4-format>`_.
+
+   * You may choose the corresponding API developed for specific native models to load the converted model.
+```
+
+```python
+from bigdl.llm.langchain.llms import LlamaLLM
+from bigdl.llm.langchain.embeddings import LlamaEmbeddings
+from langchain.chains.question_answering import load_qa_chain
+
+# switch to ChatGLMEmbeddings/GptneoxEmbeddings/BloomEmbeddings/StarcoderEmbeddings to load other models
+embeddings = LlamaEmbeddings(model_path='/path/to/converted/model.bin')
+# switch to ChatGLMLLM/GptneoxLLM/BloomLLM/StarcoderLLM to load other models
+bigdl_llm = LlamaLLM(model_path='/path/to/converted/model.bin')
+
+doc_chain = load_qa_chain(bigdl_llm, ...)
+doc_chain.run(...)
+```
+
+```eval_rst
+.. seealso::
+
+   See the examples `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/langchain/native_int4>`_.
+```
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/native_format.md b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/native_format.md
new file mode 100644
index 00000000..ce70a980
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/native_format.md
@@ -0,0 +1,32 @@
+# Native Format
+
+You may also convert Hugging Face *Transformers* models into native INT4 format for maximum performance as follows.
+
+```eval_rst
+.. note::
+
+   Currently only llama/bloom/gptneox/starcoder/chatglm model families are supported; you may use the corresponding API to load the converted model. (For other models, you can use the Hugging Face ``transformers`` format as described `here <./hugging_face_format.html>`_).
+```
+
+```python
+# convert the model
+from bigdl.llm import llm_convert
+bigdl_llm_path = llm_convert(model='/path/to/model/',
+       outfile='/path/to/output/', outtype='int4', model_family="llama")
+
+# load the converted model
+# switch to ChatGLMForCausalLM/GptneoxForCausalLM/BloomForCausalLM/StarcoderForCausalLM to load other models
+from bigdl.llm.transformers import LlamaForCausalLM
+llm = LlamaForCausalLM.from_pretrained("/path/to/output/model.bin", native=True, ...)
+
+# run the converted model
+input_ids = llm.tokenize(prompt)
+output_ids = llm.generate(input_ids, ...)
+output = llm.batch_decode(output_ids)
+```
+
+```eval_rst
+.. seealso::
+   
+   See the complete example `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/transformers/native_int4/native_int4_pipeline.py>`_
+```
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/optimize_model.md b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/optimize_model.md
new file mode 100644
index 00000000..eeb7a3c1
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/optimize_model.md
@@ -0,0 +1,22 @@
+## General PyTorch Model Supports
+
+You may apply BigDL-LLM optimizations on any Pytorch models, not only Hugging Face *Transformers* models for acceleration. With BigDL-LLM, PyTorch models (in FP16/BF16/FP32) can be optimized with low-bit quantizations (supported precisions include INT4/INT5/INT8).
+
+You can easily enable BigDL-LLM INT4 optimizations on any Pytorch models just as follows:
+
+```python
+# Create or load any Pytorch model
+model = ...
+
+# Add only two lines to enable BigDL-LLM INT4 optimizations on model
+from bigdl.llm import optimize_model
+model = optimize_model(model)
+```
+
+After optimizing the model, you may straightly run the optimized model with no API changed and less inference latency.
+
+```eval_rst
+.. seealso::
+
+   See the examples for Hugging Face *Transformers* models `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/transformers/general_int4>`_. And examples for other general Pytorch models can be found `here <https://github.com/intel-analytics/BigDL/blob/main/python/llm/example/pytorch-model>`_.
+```
diff --git a/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/transformers_style_api.rst b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/transformers_style_api.rst
new file mode 100644
index 00000000..2e4723a2
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/KeyFeatures/transformers_style_api.rst
@@ -0,0 +1,10 @@
+``transformers``-style API
+================================
+
+You may run the LLMs using ``transformers``-style API in ``bigdl-llm``.
+
+* |hugging_face_transformers_format|_
+* `Native Format <./native_format.html>`_
+
+.. |hugging_face_transformers_format| replace:: Hugging Face ``transformers`` Format
+.. _hugging_face_transformers_format: ./hugging_face_format.html
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/examples.rst b/docs/readthedocs/source/doc/LLM/Overview/examples.rst
new file mode 100644
index 00000000..e61f1c4b
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/examples.rst
@@ -0,0 +1,9 @@
+BigDL-LLM Examples
+================================
+
+You can use BigDL-LLM to run any Huggingface *Transfomers* models with INT4 optimizations on either servers or laptops.
+
+Here, we provide examples to help you quickly get started using BigDL-LLM to run some popular open-source models in the community. Please refer to the appropriate guide based on your device:
+
+* `CPU <./examples_cpu.html>`_
+* `GPU <./examples_gpu.html>`_
diff --git a/docs/readthedocs/source/doc/LLM/Overview/examples_cpu.md b/docs/readthedocs/source/doc/LLM/Overview/examples_cpu.md
new file mode 100644
index 00000000..7fdb934b
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/examples_cpu.md
@@ -0,0 +1,26 @@
+# BigDL-LLM Examples: CPU
+
+Here, we provide some examples on how you could apply BigDL-LLM INT4 optimizations on popular open-source models in the community.
+
+To run these examples, please first refer to [here](./install_cpu.html) for more information about how to install ``bigdl-llm``, requirements and best practices for setting up your environment.
+
+The following models have been verified on either servers or laptops with Intel CPUs.
+
+| Model     | Example                                                  |
+|-----------|----------------------------------------------------------|
+| LLaMA *(such as Vicuna, Guanaco, Koala, Baize, WizardLM, etc.)* | [link1](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/native_int4), [link2](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/vicuna)    |
+| LLaMA 2   | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/llama2)    |
+| MPT       | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/mpt)       |
+| Falcon    | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/falcon)    |
+| ChatGLM   | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/chatglm)   | 
+| ChatGLM2  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/chatglm2)  | 
+| Qwen      | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/qwen)      |
+| MOSS      | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/moss)      | 
+| Baichuan  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/baichuan)  | 
+| Dolly-v1  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/dolly_v1)  | 
+| Dolly-v2  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/dolly_v2)  | 
+| RedPajama | [link1](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/native_int4), [link2](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/redpajama) | 
+| Phoenix   | [link1](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/native_int4), [link2](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/phoenix)   | 
+| StarCoder | [link1](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/native_int4), [link2](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/starcoder) | 
+| InternLM  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/internlm)  |
+| Whisper   | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/transformers/transformers_int4/whisper)   |
diff --git a/docs/readthedocs/source/doc/LLM/Overview/examples_gpu.md b/docs/readthedocs/source/doc/LLM/Overview/examples_gpu.md
new file mode 100644
index 00000000..48b83b59
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/examples_gpu.md
@@ -0,0 +1,26 @@
+# BigDL-LLM Examples: GPU
+
+Here, we provide some examples on how you could apply BigDL-LLM INT4 optimizations on popular open-source models in the community.
+
+To run these examples, please first refer to [here](./install_gpu.html) for more information about how to install ``bigdl-llm``, requirements and best practices for setting up your environment.
+
+```eval_rst
+.. important::
+
+   Only Linux system is supported now, Ubuntu 22.04 is prefered.
+```
+
+The following models have been verified on either servers or laptops with Intel GPUs.
+
+| Model     | Example                                                  |
+|-----------|----------------------------------------------------------|
+| LLaMA 2   | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/llama2)    |
+| MPT       | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/mpt)       |
+| Falcon    | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/falcon)    |
+| ChatGLM2  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/chatglm2)  | 
+| Qwen      | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/qwen)      |
+| Baichuan  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/baichuan)  | 
+| StarCoder | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/starcoder) | 
+| InternLM  | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/internlm)  |
+| Whisper   | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/whisper)   |
+| GPT-J     | [link](https://github.com/intel-analytics/BigDL/tree/main/python/llm/example/gpu/gpt-j)     |
diff --git a/docs/readthedocs/source/doc/LLM/Overview/install.rst b/docs/readthedocs/source/doc/LLM/Overview/install.rst
new file mode 100644
index 00000000..1ec5ea2d
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/install.rst
@@ -0,0 +1,7 @@
+BigDL-LLM Installation
+================================
+
+Here, we provide instructions on how to install ``bigdl-llm`` and best practices for setting up your environment. Please refer to the appropriate guide based on your device:
+
+* `CPU <./install_cpu.html>`_
+* `GPU <./install_gpu.html>`_
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/install_cpu.md b/docs/readthedocs/source/doc/LLM/Overview/install_cpu.md
new file mode 100644
index 00000000..763fd09a
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/install_cpu.md
@@ -0,0 +1,71 @@
+# BigDL-LLM Installation: CPU
+
+## Quick Installation
+
+Install BigDL-LLM for CPU supports using pip through:
+
+```bash
+pip install bigdl-llm[all]
+```
+
+```eval_rst
+.. note::
+
+   ``all`` option will trigger installation of all the dependencies for common LLM application development.
+
+.. important::
+
+   ``bigdl-llm`` is tested with Python 3.9, which is recommended for best practices.
+```
+
+## Recommended Requirements
+
+Here list the recommended hardware and OS for smooth BigDL-LLM optimization experiences on CPU:
+
+* Hardware
+
+  * PCs equipped with 12th Gen Intel® Core™ processor or higher, and at least 16GB RAM
+  * Servers equipped with Intel® Xeon® processors, at least 32G RAM.
+
+* Operating System
+
+  * Ubuntu 20.04 or later
+  * CentOS 7 or later
+  * Windows 10/11, with or without WSL
+
+## Environment Setup
+
+For optimal performance with LLM models using BigDL-LLM optimizations on Intel CPUs, here are some best practices for setting up environment:
+
+First we recommend using [Conda](https://docs.conda.io/en/latest/miniconda.html) to create a python 3.9 enviroment:
+
+```bash
+conda create -n llm python=3.9
+conda activate llm
+
+pip install bigdl-llm[all] # install bigdl-llm for CPU with 'all' option
+```
+
+Then for running a LLM model with BigDL-LLM optimizations (taking an `example.py` an example):
+
+```eval_rst	
+.. tabs::
+
+   .. tab:: Client
+
+      It is recommended to run directly with full utilization of all CPU cores:
+
+      .. code-block:: bash
+
+         python example.py
+
+   .. tab:: Server
+
+      It is recommended to run with all the physical cores of a single socket:
+
+      .. code-block:: bash
+
+         # e.g. for a server with 48 cores per socket
+         export OMP_NUM_THREADS=48
+         numactl -C 0-47 -m 0 python example.py
+```
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/install_gpu.md b/docs/readthedocs/source/doc/LLM/Overview/install_gpu.md
new file mode 100644
index 00000000..5429c150
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/install_gpu.md
@@ -0,0 +1,65 @@
+# BigDL-LLM Installation: GPU
+
+## Quick Installation
+
+Install BigDL-LLM for GPU supports using pip through:
+
+```bash
+pip install --pre --upgrade bigdl-llm[xpu] -f https://developer.intel.com/ipex-whl-stable-xpu
+```
+
+```eval_rst
+.. note::
+
+   The above command will install ``intel_extension_for_pytorch==2.0.110+xpu`` as default. You can install specific ``ipex``/``torch`` version for your need.
+
+.. important::
+
+   ``bigdl-llm`` is tested with Python 3.9, which is recommended for best practices.
+```
+
+## Recommended Requirements
+
+BigDL-LLM for GPU supports has been verified on:
+
+* Intel Arc™ A-Series Graphics
+* Intel Data Center GPU Flex Series
+
+To apply Intel GPU acceleration, there're several steps for tools installation and environment preparation:
+
+* Step 1, only Linux system is supported now, Ubuntu 22.04 is prefered.
+* Step 2, please refer to our [driver installation](https://dgpu-docs.intel.com/driver/installation.html) for general purpose GPU capabilities.
+  ```eval_rst
+  .. note::
+
+    IPEX 2.0.110+xpu requires Intel GPU Driver version is `Stable 647.21 <https://dgpu-docs.intel.com/releases/stable_647_21_20230714.html>`_.
+  ```
+* Step 3, you also need to download and install [Intel® oneAPI Base Toolkit](https://www.intel.com/content/www/us/en/developer/tools/oneapi/base-toolkit-download.html). OneMKL and DPC++ compiler are needed, others are optional.
+  ```eval_rst
+  .. note::
+
+    IPEX 2.0.110+xpu requires Intel® oneAPI Base Toolkit's version >= 2023.2.0.
+  ```
+
+## Environment Setup
+
+For optimal performance with LLM models using BigDL-LLM optimizations on Intel GPUs, here are some best practices for setting up environment:
+
+First we recommend using [Conda](https://docs.conda.io/en/latest/miniconda.html) to create a python 3.9 enviroment:
+
+```bash
+conda create -n llm python=3.9
+conda activate llm
+
+pip install --pre --upgrade bigdl-llm[xpu] -f https://developer.intel.com/ipex-whl-stable-xpu # install bigdl-llm for GPU
+```
+
+Then for running a LLM model with BigDL-LLM optimizations, several environment variables are recommended:
+
+```bash
+# configures OneAPI environment variables
+source /opt/intel/oneapi/setvars.sh
+
+export USE_XETLA=OFF
+export SYCL_PI_LEVEL_ZERO_USE_IMMEDIATE_COMMANDLISTS=1
+```
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/known_issues.md b/docs/readthedocs/source/doc/LLM/Overview/known_issues.md
new file mode 100644
index 00000000..23a521a5
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/known_issues.md
@@ -0,0 +1 @@
+# BigDL-LLM Known Issues
\ No newline at end of file
diff --git a/docs/readthedocs/source/doc/LLM/Overview/llm.md b/docs/readthedocs/source/doc/LLM/Overview/llm.md
new file mode 100644
index 00000000..a13605a5
--- /dev/null
+++ b/docs/readthedocs/source/doc/LLM/Overview/llm.md
@@ -0,0 +1,68 @@
+# BigDL-LLM in 5 minutes
+
+You can use BigDL-LLM to run any [*Hugging Face Transformers*](https://huggingface.co/docs/transformers/index) PyTorch model. It automatically optimizes and accelerates LLMs using low-precision (INT4/INT5/INT8) techniques, modern hardware accelerations and latest software optimizations.
+
+Hugging Face transformers-based applications can run on BigDL-LLM with one-line code change, and you'll immediately observe significant speedup<sup><a href="#footnote-perf" id="ref-perf">[1]</a></sup>.
+
+Here, let's take a relatively small LLM model, i.e [open_llama_3b_v2](https://huggingface.co/openlm-research/open_llama_3b_v2), and BigDL-LLM INT4 optimizations as an example.
+
+## Load a Pretrained Model
+
+Simply use one-line `transformers`-style API in `bigdl-llm` to load `open_llama_3b_v2` with INT4 optimization (by specifying `load_in_4bit=True`) as follows:
+
+```python
+from bigdl.llm.transformers import AutoModelForCausalLM
+
+model = AutoModelForCausalLM.from_pretrained(pretrained_model_name_or_path="openlm-research/open_llama_3b_v2",
+                                             load_in_4bit=True)
+```
+
+```eval_rst
+.. tip::
+
+   `open_llama_3b_v2 <https://huggingface.co/openlm-research/open_llama_3b_v2>`_ is a pretrained large language model hosted on Hugging Face. ``openlm-research/open_llama_3b_v2`` is its Hugging Face model id. ``from_pretrained`` will automatically download the model from Hugging Face to a local cache path (e.g. ``~/.cache/huggingface``), load the model, and converted it to ``bigdl-llm`` INT4 format.
+
+   It may take a long time to download the model using API. You can also download the model yourself, and set ``pretrained_model_name_or_path`` to the local path of the downloaded model. This way, ``from_pretrained`` will load and convert directly from local path without download.
+```
+## Load Tokenizer
+
+You also need a tokenizer for inference. Just use the official `transformers` API to load `LlamaTokenizer`:
+
+```python
+from transformers import LlamaTokenizer
+
+tokenizer = LlamaTokenizer.from_pretrained(pretrained_model_name_or_path="openlm-research/open_llama_3b_v2")
+```
+
+## Run LLM
+
+Now you can do model inference exactly the same way as using official `transformers` API:
+
+```python
+import torch
+
+with torch.inference_mode():
+    prompt = 'Q: What is CPU?\nA:'
+    
+    # tokenize the input prompt from string to token ids
+    input_ids = tokenizer.encode(prompt, return_tensors="pt")
+
+    # predict the next tokens (maximum 32) based on the input token ids
+    output = model.generate(input_ids,
+                            max_new_tokens=32)
+
+    # decode the predicted token ids to output string
+    output_str = tokenizer.decode(output[0], skip_special_tokens=True)
+    
+    print(output_str)
+```
+
+------
+
+<div>
+    <p>
+        <sup><a href="#ref-perf" id="footnote-perf">[1]</a>
+            Performance varies by use, configuration and other factors. <code><span>bigdl-llm</span></code> may not optimize to the same degree for non-Intel products. Learn more at <a href="https://www.Intel.com/PerformanceIndex">www.Intel.com/PerformanceIndex</a>.
+        </sup>
+    </p>
+</div>
diff --git a/docs/readthedocs/source/doc/LLM/index.rst b/docs/readthedocs/source/doc/LLM/index.rst
index ca9e7491..23e7a759 100644
--- a/docs/readthedocs/source/doc/LLM/index.rst
+++ b/docs/readthedocs/source/doc/LLM/index.rst
@@ -1,14 +1,53 @@
 BigDL-LLM
 =========================
 
+.. raw:: html
 
-BigDL-LLM is a library for running LLM (Large Language Models) on your Intel laptop using INT4 with very low latency (for any Hugging Face Transformers model).
+    <p>
+        <strong>BigDL-LLM</strong> is a library for running <strong>LLM</strong> (large language model) on your Intel <strong>laptop</strong> or <strong>GPU</strong> using INT4 with very low latency <sup><a href="#footnote-perf" id="ref-perf">[1]</a></sup> (for any <strong>PyTorch</strong> model).
+    </p>
 
 -------
 
 .. grid:: 1 2 2 2
     :gutter: 2
 
+    .. grid-item-card::
+
+        **Get Started**
+        ^^^
+
+        Documents in these sections helps you getting started quickly with BigDL-LLM.
+
+        +++
+        :bdg-link:`BigDL-LLM in 5 minutes <./Overview/quick_start.html>` |
+        :bdg-link:`Installation <./Overview/install.html>`
+
+    .. grid-item-card::
+
+        **Key Features Guide**
+        ^^^
+
+        Each guide in this section provides you with in-depth information, concepts and knowledges about BigDL-LLM key features.
+
+        +++
+
+        :bdg-link:`transformers-style <./Overview/KeyFeatures/transformers_style_api.html>` |
+        :bdg-link:`Optimize Model <./Overview/KeyFeatures/optimize_model.html>` |
+        :bdg-link:`LangChain <./Overview/KeyFeatures/langchain_api.html>` |
+        :bdg-link:`GPU <./Overview/KeyFeatures/gpu_supports.html>`
+
+    .. grid-item-card::
+
+        **Examples & Tutorials**
+        ^^^
+
+        Examples contain scripts to help you quickly get started using BigDL-LLM to run some popular open-source models in the community.
+
+        +++
+
+        :bdg-link:`Examples <./Overview/examples.html>`
+
     .. grid-item-card::
 
         **API Document**
@@ -20,7 +59,19 @@ BigDL-LLM is a library for running LLM (Large Language Models) on your Intel lap
 
         :bdg-link:`API Document <../PythonAPI/LLM/index.html>`
 
+------
+
+.. raw:: html
+
+    <div>
+        <p>
+            <sup><a href="#ref-perf" id="footnote-perf">[1]</a>
+               Performance varies by use, configuration and other factors. <code><span>bigdl-llm</span></code> may not optimize to the same degree for non-Intel products. Learn more at <a href="https://www.Intel.com/PerformanceIndex">www.Intel.com/PerformanceIndex</a>.
+            </sup>
+        </p>
+    </div>
+                                        
 ..  toctree::
     :hidden:
 
-    BigDL-LLM Document <self>
\ No newline at end of file
+    BigDL-LLM Document <self>
diff --git a/docs/readthedocs/source/doc/PythonAPI/LLM/transformers.rst b/docs/readthedocs/source/doc/PythonAPI/LLM/transformers.rst
index 519b2d27..62b05ac7 100644
--- a/docs/readthedocs/source/doc/PythonAPI/LLM/transformers.rst
+++ b/docs/readthedocs/source/doc/PythonAPI/LLM/transformers.rst
@@ -1,4 +1,4 @@
-BigDL-LLM Transformers API
+BigDL-LLM `transformers`-style API
 =====================
 
 llm.transformers.model
diff --git a/docs/readthedocs/source/index.rst b/docs/readthedocs/source/index.rst
index fc5a9549..3fb1f454 100644
--- a/docs/readthedocs/source/index.rst
+++ b/docs/readthedocs/source/index.rst
@@ -10,7 +10,12 @@ The BigDL Project
 ---------------------------------
 BigDL-LLM: low-Bit LLM library
 ---------------------------------
-`bigdl-llm <https://github.com/intel-analytics/BigDL/tree/main/python/llm>`_ is a library for running **LLM** (large language model) on your Intel **laptop** or **GPU** using INT4 with very low latency [*]_ (for any **PyTorch** model).
+
+.. raw:: html
+
+   <p>
+      <a href="https://github.com/intel-analytics/BigDL/tree/main/python/llm"><code><span>bigdl-llm</span></code></a> is a library for running <strong>LLM</strong> (large language model) on your Intel <strong>laptop</strong> or <strong>GPU</strong> using INT4 with very low latency <sup><a href="#footnote-perf" id="ref-perf">[1]</a></sup> (for any <strong>PyTorch</strong> model).
+   </p>
 
 .. note::
 
@@ -33,8 +38,8 @@ See the **optimized performance** of ``chatglm2-6b``, ``llama-2-13b-chat``, and
 .. raw:: html
    
    <p align="center">
-            <img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/chatglm2-6b.gif?raw=true" width='30%' /> <img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llama-2-13b-chat.gif?raw=true" width='30%' /> <img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llm-15b5.gif?raw=true" width='30%' />
-            <img src="https://github.com/bigdl-project/bigdl-project.github.io/blob/master/assets/llm-models3.png?raw=true" width='76%'/>
+            <a href="https://llm-assets.readthedocs.io/en/latest/_images/chatglm2-6b.gif"><img src="https://llm-assets.readthedocs.io/en/latest/_images/chatglm2-6b.gif" width='30%'></a> <a href="https://llm-assets.readthedocs.io/en/latest/_images/llama-2-13b-chat.gif"><img src="https://llm-assets.readthedocs.io/en/latest/_images/llama-2-13b-chat.gif" width='30%' ></a> <a href="https://llm-assets.readthedocs.io/en/latest/_images/llm-15b5.gif"><img src="https://llm-assets.readthedocs.io/en/latest/_images/llm-15b5.gif" width='30%' ></a>
+            <img src="https://llm-assets.readthedocs.io/en/latest/_images/llm-models3.png" width='76%'>
   </p>
 
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -151,4 +156,12 @@ Choosing the right BigDL library
 
 ------
 
-.. [*] Performance varies by use, configuration and other factors. ``bigdl-llm`` may not optimize to the same degree for non-Intel products. Learn more at www.Intel.com/PerformanceIndex.
+.. raw:: html
+
+    <div>
+        <p>
+            <sup><a href="#ref-perf" id="footnote-perf">[1]</a>
+               Performance varies by use, configuration and other factors. <code><span>bigdl-llm</span></code> may not optimize to the same degree for non-Intel products. Learn more at <a href="https://www.Intel.com/PerformanceIndex">www.Intel.com/PerformanceIndex</a>.
+            </sup>
+        </p>
+    </div>