feature: add guanaco support #121

pilot/configs/model_config.py

@@ -35,6 +35,7 @@ LLM_MODEL_CONFIG = {
     "chatglm-6b": os.path.join(MODEL_PATH, "chatglm-6b"),
     "text2vec-base": os.path.join(MODEL_PATH, "text2vec-base-chinese"),
     "sentence-transforms": os.path.join(MODEL_PATH, "all-MiniLM-L6-v2"),
+    "guanaco-33b-merged": os.path.join(MODEL_PATH, "guanaco-33b-merged"),
     "proxyllm": "proxyllm",
 }
 

pilot/model/adapter.py

@@ -3,7 +3,7 @@
 from functools import cache
 from typing import List
 
-from transformers import AutoModel, AutoModelForCausalLM, AutoTokenizer
+from transformers import AutoModel, AutoModelForCausalLM, AutoTokenizer, LlamaTokenizer
 
 from pilot.configs.model_config import DEVICE
 
@@ -85,8 +85,15 @@ class ChatGLMAdapater(BaseLLMAdaper):
 
 class GuanacoAdapter(BaseLLMAdaper):
     """TODO Support guanaco"""
+    def match(self, model_path: str):
+        return "guanaco" in model_path
     
-    pass
+    def loader(self, model_path: str, from_pretrained_kwargs: dict):
+        tokenizer = LlamaTokenizer.from_pretrained(model_path)
+        model = AutoModelForCausalLM.from_pretrained(
+            model_path, load_in_4bit=True, device_map={"": 0}, **from_pretrained_kwargs
+        )
+        return model, tokenizer
 
 
 class CodeGenAdapter(BaseLLMAdaper):
@@ -143,6 +150,7 @@ class ProxyllmAdapter(BaseLLMAdaper):
 
 register_llm_model_adapters(VicunaLLMAdapater)
 register_llm_model_adapters(ChatGLMAdapater)
+register_llm_model_adapters(GuanacoAdapter)
 # TODO Default support vicuna, other model need to tests and Evaluate
 
 # just for test, remove this later

pilot/model/guanaco_llm.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import torch
+import transformers
+from transformers import GenerationConfig
+from llm_utils import Iteratorize, Stream
+
+def guanaco_generate_output(model, tokenizer, params, device):
+    """Fork from fastchat: https://github.com/KohakuBlueleaf/guanaco-lora/blob/main/generate.py"""
+    prompt = params["prompt"]
+    inputs = tokenizer(prompt, return_tensors="pt") 
+    input_ids = inputs["input_ids"].to(device)
+    temperature=0.5,
+    top_p=0.95,
+    top_k=45,
+    max_new_tokens=128,
+    stream_output=True
+
+    generation_config = GenerationConfig(
+            temperature=temperature,
+            top_p=top_p,
+            top_k=top_k,          
+        )
+    
+    generate_params = {
+            "input_ids": input_ids,
+            "generation_config": generation_config,
+            "return_dict_in_generate": True,
+            "output_scores": True,
+            "max_new_tokens": max_new_tokens,
+        }
+    
+    if stream_output:
+            # Stream the reply 1 token at a time.
+            # This is based on the trick of using 'stopping_criteria' to create an iterator,
+            # from https://github.com/oobabooga/text-generation-webui/blob/ad37f396fc8bcbab90e11ecf17c56c97bfbd4a9c/modules/text_generation.py#L216-L243.
+
+            def generate_with_callback(callback=None, **kwargs):
+                kwargs.setdefault(
+                    "stopping_criteria", transformers.StoppingCriteriaList()
+                )
+                kwargs["stopping_criteria"].append(
+                    Stream(callback_func=callback)
+                )
+                with torch.no_grad():
+                    model.generate(**kwargs)
+
+            def generate_with_streaming(**kwargs):
+                return Iteratorize(
+                    generate_with_callback, kwargs, callback=None
+                )
+            
+            with generate_with_streaming(**generate_params) as generator:
+                for output in generator:
+                    # new_tokens = len(output) - len(input_ids[0])
+                    decoded_output = tokenizer.decode(output)
+
+                    if output[-1] in [tokenizer.eos_token_id]:
+                        break
+
+                    yield decoded_output.split("### Response:")[-1].strip()
+            return  # early return for stream_output
+    
+    with torch.no_grad():
+            generation_output = model.generate(
+                input_ids=input_ids,
+                generation_config=generation_config,
+                return_dict_in_generate=True,
+                output_scores=True,
+                max_new_tokens=max_new_tokens,
+            )
+    
+    s = generation_output.sequences[0]
+    print(f"debug_sequences,{s}",s)
+    output = tokenizer.decode(s)
+    print(f"debug_output,{output}",output)
+    yield output.split("### Response:")[-1].strip()

pilot/model/llm_utils.py

@@ -1,6 +1,11 @@
 #!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
+import traceback
+from queue import Queue
+from threading import Thread
+import transformers
+
 from typing import List, Optional
 
 from pilot.configs.config import Config
@@ -47,3 +52,65 @@ def create_chat_completion(
 
         response = None
         # TODO impl this use vicuna server api
+
+class Stream(transformers.StoppingCriteria):
+    def __init__(self, callback_func=None):
+        self.callback_func = callback_func
+
+    def __call__(self, input_ids, scores) -> bool:
+        if self.callback_func is not None:
+            self.callback_func(input_ids[0])
+        return False
+
+
+class Iteratorize:
+
+    """
+    Transforms a function that takes a callback
+    into a lazy iterator (generator).
+    """
+
+    def __init__(self, func, kwargs={}, callback=None):
+        self.mfunc = func
+        self.c_callback = callback
+        self.q = Queue()
+        self.sentinel = object()
+        self.kwargs = kwargs
+        self.stop_now = False
+
+        def _callback(val):
+            if self.stop_now:
+                raise ValueError
+            self.q.put(val)
+
+        def gentask():
+            try:
+                ret = self.mfunc(callback=_callback, **self.kwargs)
+            except ValueError:
+                pass
+            except:
+                traceback.print_exc()
+                pass
+
+            self.q.put(self.sentinel)
+            if self.c_callback:
+                self.c_callback(ret)
+
+        self.thread = Thread(target=gentask)
+        self.thread.start()
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        obj = self.q.get(True, None)
+        if obj is self.sentinel:
+            raise StopIteration
+        else:
+            return obj
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.stop_now = True

pilot/server/chat_adapter.py

@@ -85,14 +85,15 @@ class CodeGenChatAdapter(BaseChatAdpter):
 
 
 class GuanacoChatAdapter(BaseChatAdpter):
-    """Model chat adapter for Guanaco"""
+    """Model chat adapter for Guanaco """
     
     def match(self, model_path: str):
         return "guanaco" in model_path
 
     def get_generate_stream_func(self):
-        # TODO
+        from pilot.model.guanaco_llm import guanaco_generate_output
-        pass
+        
+        return guanaco_generate_output
 
 
 class ProxyllmChatAdapter(BaseChatAdpter):
@@ -107,6 +108,7 @@ class ProxyllmChatAdapter(BaseChatAdpter):
 
 register_llm_model_chat_adapter(VicunaChatAdapter)
 register_llm_model_chat_adapter(ChatGLMChatAdapter)
+register_llm_model_chat_adapter(GuanacoChatAdapter)
 
 # Proxy model for test and develop, it's cheap for us now.
 register_llm_model_chat_adapter(ProxyllmChatAdapter)