308 lines
11 KiB
Python
308 lines
11 KiB
Python
model_name = "ChatGLM-ONNX"
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cmd_to_install = "`pip install request_llm/requirements_chatglm.txt`"
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from transformers import AutoModel, AutoTokenizer
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import time
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import threading
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import importlib
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from toolbox import update_ui, get_conf
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from multiprocessing import Process, Pipe
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from .local_llm_class import LocalLLMHandle, get_local_llm_predict_fns, SingletonLocalLLM
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# ------------------------------------------------------------------------------------------------------------------------
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# 🔌💻 Source Code From https://huggingface.co/K024/ChatGLM-6b-onnx-u8s8/blob/main/model.py
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# ------------------------------------------------------------------------------------------------------------------------
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import re
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import numpy as np
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# import torch
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from onnxruntime import InferenceSession, SessionOptions
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# Currently `MatMulInteger` and `DynamicQuantizeLinear` are only supported on CPU,
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# although they are documented as supported on CUDA.
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providers = ["CPUExecutionProvider"]
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# if torch.cuda.is_available():
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# providers = ["CUDAExecutionProvider"] + providers
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# Default paths
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tokenizer_path = "chatglm-6b-int8-onnx-merged/sentencepiece.model"
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onnx_model_path = "chatglm-6b-int8-onnx-merged/chatglm-6b-int8.onnx"
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# input & output names
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past_names = [f"past_{name}_{i}" for i in range(28) for name in ["key", "value"]]
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present_names = [f"present_{name}_{i}" for i in range(28) for name in ["key", "value"]]
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output_names = ["logits"] + present_names
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# default kv_cache for first inference
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default_past_key_values = {
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k: np.zeros((1, 0, 32, 128), dtype=np.float32) for k in past_names
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}
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def chat_template(history: list[tuple[str, str]], current: str):
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prompt = ""
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chat_round = 0
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for question, answer in history:
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prompt += f"[Round {chat_round}]\n问：{question}\n答：{answer}\n"
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chat_round += 1
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prompt += f"[Round {chat_round}]\n问：{current}\n答："
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return prompt
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def process_response(response: str):
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response = response.strip()
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response = response.replace("[[训练时间]]", "2023年")
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punkts = [
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[",", "，"],
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["!", "！"],
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[":", "："],
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[";", "；"],
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["\?", "？"],
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]
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for item in punkts:
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response = re.sub(r"([\u4e00-\u9fff])%s" % item[0], r"\1%s" % item[1], response)
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response = re.sub(r"%s([\u4e00-\u9fff])" % item[0], r"%s\1" % item[1], response)
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return response
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class ChatGLMModel():
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def __init__(self, onnx_model_path=onnx_model_path, tokenizer_path=tokenizer_path, profile=False) -> None:
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self.tokenizer = ChatGLMTokenizer(tokenizer_path)
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options = SessionOptions()
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options.enable_profiling = profile
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self.session = InferenceSession(onnx_model_path, options, providers=providers)
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self.eop_token_id = self.tokenizer["<eop>"]
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def prepare_input(self, prompt: str):
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input_ids, prefix_mask = self.tokenizer.encode(prompt)
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input_ids = np.array([input_ids], dtype=np.longlong)
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prefix_mask = np.array([prefix_mask], dtype=np.longlong)
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return input_ids, prefix_mask, default_past_key_values
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def sample_next_token(self, logits: np.ndarray, top_k=50, top_p=0.7, temperature=1):
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# softmax with temperature
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exp_logits = np.exp(logits / temperature)
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probs = exp_logits / np.sum(exp_logits)
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# top k
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top_k_idx = np.argsort(-probs)[:top_k]
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top_k_probs = probs[top_k_idx]
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# top p
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cumsum_probs = np.cumsum(top_k_probs)
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top_k_probs[(cumsum_probs - top_k_probs) > top_p] = 0.0
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top_k_probs = top_k_probs / np.sum(top_k_probs)
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# sample
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next_token = np.random.choice(top_k_idx, size=1, p=top_k_probs)
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return next_token[0].item()
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def generate_iterate(self, prompt: str, max_generated_tokens=100, top_k=50, top_p=0.7, temperature=1):
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input_ids, prefix_mask, past_key_values = self.prepare_input(prompt)
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output_tokens = []
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while True:
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inputs = {
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"input_ids": input_ids,
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"prefix_mask": prefix_mask,
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"use_past": np.array(len(output_tokens) > 0),
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}
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inputs.update(past_key_values)
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logits, *past_key_values = self.session.run(output_names, inputs)
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past_key_values = { k: v for k, v in zip(past_names, past_key_values) }
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next_token = self.sample_next_token(logits[0, -1], top_k=top_k, top_p=top_p, temperature=temperature)
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output_tokens += [next_token]
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if next_token == self.eop_token_id or len(output_tokens) > max_generated_tokens:
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break
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input_ids = np.array([[next_token]], dtype=np.longlong)
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prefix_mask = np.concatenate([prefix_mask, np.array([[0]], dtype=np.longlong)], axis=1)
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yield process_response(self.tokenizer.decode(output_tokens))
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return process_response(self.tokenizer.decode(output_tokens))
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# ------------------------------------------------------------------------------------------------------------------------
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# 🔌💻 Source Code From https://huggingface.co/K024/ChatGLM-6b-onnx-u8s8/blob/main/tokenizer.py
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# ------------------------------------------------------------------------------------------------------------------------
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import re
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from sentencepiece import SentencePieceProcessor
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def replace_spaces_with_blank(match: re.Match[str]):
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return f"<|blank_{len(match.group())}|>"
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def replace_blank_with_spaces(match: re.Match[str]):
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return " " * int(match.group(1))
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class ChatGLMTokenizer:
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def __init__(self, vocab_file):
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assert vocab_file is not None
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self.vocab_file = vocab_file
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self.special_tokens = ["[MASK]", "[gMASK]", "[sMASK]", "<unused_0>", "<sop>", "<eop>", "<ENC>", "<dBLOCK>"]
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self.text_tokenizer = SentencePieceProcessor(str(vocab_file))
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def __len__(self):
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return len(self.text_tokenizer)
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def __getitem__(self, key: str):
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return self.text_tokenizer[key]
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def preprocess(self, text: str, linebreak=True, whitespaces=True):
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if linebreak:
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text = text.replace("\n", "<n>")
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if whitespaces:
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text = text.replace("\t", "<|tab|>")
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text = re.sub(r" {2,80}", replace_spaces_with_blank, text)
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return text
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def encode(
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self, text: str, text_pair: str = None,
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linebreak=True, whitespaces=True,
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add_dummy_prefix=True, special_tokens=True,
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) -> tuple[list[int], list[int]]:
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"""
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text: Text to encode. Bidirectional part with a [gMASK] and an <sop> for causal LM.
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text_pair: causal LM part.
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linebreak: Whether to encode newline (\n) in text.
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whitespaces: Whether to encode multiple whitespaces or tab in text, useful for source code encoding.
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special_tokens: Whether to encode special token ([MASK], [gMASK], etc.) in text.
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add_dummy_prefix: Whether to add dummy blank space in the beginning.
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"""
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text = self.preprocess(text, linebreak, whitespaces)
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if not add_dummy_prefix:
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text = "<n>" + text
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tokens = self.text_tokenizer.encode(text)
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prefix_mask = [1] * len(tokens)
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if special_tokens:
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tokens += [self.text_tokenizer["[gMASK]"], self.text_tokenizer["<sop>"]]
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prefix_mask += [1, 0]
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if text_pair is not None:
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text_pair = self.preprocess(text_pair, linebreak, whitespaces)
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pair_tokens = self.text_tokenizer.encode(text_pair)
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tokens += pair_tokens
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prefix_mask += [0] * len(pair_tokens)
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if special_tokens:
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tokens += [self.text_tokenizer["<eop>"]]
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prefix_mask += [0]
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return (tokens if add_dummy_prefix else tokens[2:]), prefix_mask
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def decode(self, text_ids: list[int]) -> str:
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text = self.text_tokenizer.decode(text_ids)
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text = text.replace("<n>", "\n")
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text = text.replace("<|tab|>", "\t")
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text = re.sub(r"<\|blank_(\d\d?)\|>", replace_blank_with_spaces, text)
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return text
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# ------------------------------------------------------------------------------------------------------------------------
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# 🔌💻 Local Model
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# ------------------------------------------------------------------------------------------------------------------------
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@SingletonLocalLLM
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class GetONNXGLMHandle(LocalLLMHandle):
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def load_model_info(self):
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# 🏃♂️🏃♂️🏃♂️ 子进程执行
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self.model_name = model_name
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self.cmd_to_install = cmd_to_install
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def load_model_and_tokenizer(self):
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# 🏃♂️🏃♂️🏃♂️ 子进程执行
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import os, glob
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if not len(glob.glob("./request_llm/ChatGLM-6b-onnx-u8s8/chatglm-6b-int8-onnx-merged/*.bin")) >= 7: # 该模型有七个 bin 文件
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from huggingface_hub import snapshot_download
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snapshot_download(repo_id="K024/ChatGLM-6b-onnx-u8s8", local_dir="./request_llm/ChatGLM-6b-onnx-u8s8")
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def create_model():
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return ChatGLMModel(
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tokenizer_path = "./request_llm/ChatGLM-6b-onnx-u8s8/chatglm-6b-int8-onnx-merged/sentencepiece.model",
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onnx_model_path = "./request_llm/ChatGLM-6b-onnx-u8s8/chatglm-6b-int8-onnx-merged/chatglm-6b-int8.onnx"
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)
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self._model = create_model()
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return self._model, None
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def llm_stream_generator(self, **kwargs):
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# 🏃♂️🏃♂️🏃♂️ 子进程执行
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def adaptor(kwargs):
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model = self._model
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tokenizer = self._tokenizer
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prompt = kwargs['query']
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max_length = kwargs['max_length']
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top_p = kwargs['top_p']
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temperature = kwargs['temperature']
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history = kwargs['history']
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real_prompt = combine_history(prompt, history)
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return model, tokenizer, real_prompt, max_length, top_p, temperature
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model, tokenizer, prompt, max_length, top_p, temperature = adaptor(kwargs)
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prompt = chat_template(history, question)
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for answer in self._model.generate_iterate(
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prompt,
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max_generated_tokens=max_length,
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top_k=1,
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top_p=top_p,
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temperature=temperature,
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):
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yield answer
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def try_to_import_special_deps(self, **kwargs):
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# import something that will raise error if the user does not install requirement_*.txt
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# 🏃♂️🏃♂️🏃♂️ 子进程执行
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pass
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# ------------------------------------------------------------------------------------------------------------------------
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# 🔌💻 GPT-Academic Interface
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# ------------------------------------------------------------------------------------------------------------------------
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predict_no_ui_long_connection, predict = get_local_llm_predict_fns(GetONNXGLMHandle, model_name) |