LLM: update langchain and cpp-python style API examples (#8456)

python/llm/example/cpp-python/README.md

@@ -0,0 +1,28 @@
+# BigDL-LLM INT4 Inference Using Llama-Cpp-Python Format API
+
+In this example, we show how to run inference on converted INT4 model using llama-cpp-python format API.
+
+> **Note**: Currently model family LLaMA, GPT-NeoX, BLOOM and StarCoder are supported.
+
+## Prepare Environment
+We suggest using conda to manage environment:
+```bash
+conda create -n llm python=3.9
+conda activate llm
+
+pip install --pre --upgrade bigdl-llm[all]
+```
+
+## Convert Models using bigdl-llm
+Follow the instructions in [Convert model](https://github.com/intel-analytics/BigDL/tree/main/python/llm#convert-model).
+
+
+## Run the example
+```bash
+python ./int4_inference.py -m CONVERTED_MODEL_PATH -x MODEL_FAMILY -p PROMPT -t THREAD_NUM
+```
+arguments info:
+- `-m CONVERTED_MODEL_PATH`: **required**, path to the converted model
+- `-x MODEL_FAMILY`: **required**, the model family of the model specified in `-m`, available options are `llama`, `gptneox`, `bloom` and `starcoder`
+- `-p PROMPT`: question to ask. Default is `What is AI?`.
+- `-t THREAD_NUM`: specify the number of threads to use for inference. Default is `2`.

python/llm/example/cpp-python/int4_inference.py

@@ -36,6 +36,9 @@ def main(args):
     if model_family == "gptneox": 
         from bigdl.llm.models import Gptneox  
         modelclass = Gptneox
+    if model_family == "starcoder":   
+        from bigdl.llm.models import Starcoder
+        modelclass = Starcoder
         
     model = modelclass(model_path, n_threads=n_threads)
     response=model(prompt)
@@ -44,6 +47,7 @@ def main(args):
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description='Llama-CPP-Python style API Simple Example')
     parser.add_argument('-x','--model-family', type=str, required=True,
+                        choices=["llama", "bloom", "gptneox", "starcoder"],
                         help='the model family')
     parser.add_argument('-m','--model-path', type=str, required=True,
                         help='the path to the converted llm model')

python/llm/example/langchain/README.md

@@ -3,7 +3,7 @@
 The examples here shows how to use langchain with `bigdl-llm`.
 
 ## Install bigdl-llm
-Follow the instructions in  [bigdl-llm docs: Install]().
+Follow the instructions in [Install](https://github.com/intel-analytics/BigDL/tree/main/python/llm#install).
 
 ## Install Required Dependencies for langchain examples. 
 
@@ -17,7 +17,7 @@ Note that typing_extensions==4.5.0 is required, or you may encounter error `Type
 
 
 ## Convert Models using bigdl-llm
-Follow the instructions in [bigdl-llm docs: Convert Models]().
+Follow the instructions in [Convert model](https://github.com/intel-analytics/BigDL/tree/main/python/llm#convert-model).
 
 
 ## Run the examples
@@ -25,22 +25,22 @@ Follow the instructions in [bigdl-llm docs: Convert Models]().
 ### 1. Streaming Chat
 
 ```bash
-python ./streamchat.py -m MODEL_PATH -x MODEL_FAMILY -t THREAD_NUM -q "What is AI?"
+python ./streamchat.py -m CONVERTED_MODEL_PATH -x MODEL_FAMILY -q QUESTION -t THREAD_NUM
 ```
 arguments info:
-- `-m MODEL_PATH`: path to the converted model
+- `-m CONVERTED_MODEL_PATH`: **required**, path to the converted model
-- `-x MODEL_FAMILY`: the model family of the model specified in `-m`, available options are `llama`, `gptneox`
+- `-x MODEL_FAMILY`: **required**, the model family of the model specified in `-m`, available options are `llama`, `gptneox` and `bloom`
-- `-q QUESTION `: question to ask. Default  is `What is AI?`.
+- `-q QUESTION`: question to ask. Default is `What is AI?`.
-- `-t THREAD_NUM`: required argument defining the number of threads to use for inference. Default is `2`.
+- `-t THREAD_NUM`: specify the number of threads to use for inference. Default is `2`.
 
 ### 2. Question Answering over Docs
 ```bash
-python ./docqa.py --t THREAD_NUM -m -x
+python ./docqa.py -m CONVERTED_MODEL_PATH -x MODEL_FAMILY -i DOC_PATH -q QUESTION -c CONTEXT_SIZE -t THREAD_NUM
 ```
 arguments info:
-- `-m CONVERTED_MODEL_PATH`: path to the converted model in above step
+- `-m CONVERTED_MODEL_PATH`: **required**, path to the converted model in above step
-- `-x MODEL_FAMILY`: the model family of the model specified in `-m`, available options are `llama`, `gptneox`
+- `-x MODEL_FAMILY`: **required**, the model family of the model specified in `-m`, available options are `llama`, `gptneox` and `bloom`
-- `-q QUESTION `: question to ask, default question is `What is AI?`.
+- `-i DOC_PATH`: **required**, path to the input document
-- `-t THREAD_NUM`: required argument defining the number of threads to use for inference. Default is `2`.
+- `-q QUESTION`: question to ask. Default is `What is AI?`.
-
+- `-c CONTEXT_SIZE`: specify the maximum context size. Default is `2048`.
-
+- `-t THREAD_NUM`: specify the number of threads to use for inference. Default is `2`.

python/llm/example/langchain/docqa.py

@@ -71,17 +71,18 @@ def main(args):
 
 
 if __name__ == '__main__':
-    parser = argparse.ArgumentParser(description='Llama-CPP-Python style API Simple Example')
+    parser = argparse.ArgumentParser(description='BigDL-LLM Langchain Question Answering over Docs Example')
     parser.add_argument('-x','--model-family', type=str, required=True,
+                        choices=["llama", "bloom", "gptneox"],
                         help='the model family')
     parser.add_argument('-m','--model-path', type=str, required=True,
                         help='the path to the converted llm model')
-    parser.add_argument('-i', '--input-path', type=str,
+    parser.add_argument('-i', '--input-path', type=str, required=True,
                         help='the path to the input doc.')
     parser.add_argument('-q', '--question', type=str, default='What is AI?',
                         help='qustion you want to ask.')
     parser.add_argument('-c','--n-ctx', type=int, default=2048,
-                        help='number of threads to use for inference')
+                        help='the maximum context size')
     parser.add_argument('-t','--thread-num', type=int, default=2,
                         help='number of threads to use for inference')
     args = parser.parse_args()

python/llm/example/langchain/streamchat.py

@@ -56,8 +56,9 @@ def main(args):
 
 
 if __name__ == '__main__':
-    parser = argparse.ArgumentParser(description='Llama-CPP-Python style API Simple Example')
+    parser = argparse.ArgumentParser(description='BigDL-LLM Langchain Streaming Chat Example')
     parser.add_argument('-x','--model-family', type=str, required=True,
+                        choices=["llama", "bloom", "gptneox"],
                         help='the model family')
     parser.add_argument('-m','--model-path', type=str, required=True,
                         help='the path to the converted llm model')

python/llm/example/transformers/native_int4_pipeline.py

@@ -95,6 +95,7 @@ def main():
     parser.add_argument('--thread-num', type=int, default=2, required=True,
                         help='Number of threads to use for inference')
     parser.add_argument('--model-family', type=str, default='llama', required=True,
+                        choices=["llama", "bloom", "gptneox", "starcoder"],
                         help="The model family of the large language model (supported option: 'llama', "
                              "'gptneox', 'bloom', 'starcoder')")
     parser.add_argument('--repo-id-or-model-path', type=str, required=True,