Features: multi llm model support. (#78)

Features: multi llms support.
     - model_adapter for load multi models
     - chat_adapter for chat with models.
This commit is contained in:
Aries-ckt 2023-05-21 17:28:11 +08:00 committed by GitHub
commit e847a3fc7a
15 changed files with 463 additions and 72 deletions

1
.gitignore vendored
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@ -23,6 +23,7 @@ lib/
lib64/
parts/
sdist/
models
var/
wheels/
models/

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@ -29,6 +29,10 @@ Currently, we have released multiple key features, which are listed below to dem
- Unified vector storage/indexing of knowledge base
- Support for unstructured data such as PDF, Markdown, CSV, and WebURL
- Milti LLMs Support
- Supports multiple large language models, currently supporting Vicuna (7b, 13b), ChatGLM-6b (int4, int8)
- TODO: codegen2, codet5p
## Demo
@ -175,6 +179,10 @@ Notice: the webserver need to connect llmserver, so you need change the .env f
We provide a user interface for Gradio, which allows you to use DB-GPT through our user interface. Additionally, we have prepared several reference articles (written in Chinese) that introduce the code and principles related to our project.
- [LLM Practical In Action Series (1) — Combined Langchain-Vicuna Application Practical](https://medium.com/@cfqcsunny/llm-practical-in-action-series-1-combined-langchain-vicuna-application-practical-701cd0413c9f)
### Multi LLMs Usage
To use multiple models, modify the LLM_MODEL parameter in the .env configuration file to switch between the models.
## Acknowledgement
The achievements of this project are thanks to the technical community, especially the following projects:

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@ -26,6 +26,10 @@ DB-GPT 是一个开源的以数据库为基础的GPT实验项目使用本地
- 知识库统一向量存储/索引
- 非结构化数据支持包括PDF、MarkDown、CSV、WebURL
- 多模型支持
- 支持多种大语言模型, 当前已支持Vicuna(7b,13b), ChatGLM-6b(int4, int8)
- TODO: codet5p, codegen2
## 效果演示
示例通过 RTX 4090 GPU 演示,[YouTube 地址](https://www.youtube.com/watch?v=1PWI6F89LPo)
@ -178,6 +182,10 @@ $ python webserver.py
2. [大模型实战系列(2) —— DB-GPT 阿里云部署指南](https://zhuanlan.zhihu.com/p/629467580)
3. [大模型实战系列(3) —— DB-GPT插件模型原理与使用](https://zhuanlan.zhihu.com/p/629623125)
### 多模型使用
在.env 配置文件当中, 修改LLM_MODEL参数来切换使用的模型。
## 感谢
项目取得的成果,需要感谢技术社区,尤其以下项目。

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@ -5,14 +5,21 @@ import requests
import json
import time
import uuid
import os
import sys
from urllib.parse import urljoin
import gradio as gr
ROOT_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(ROOT_PATH)
from pilot.configs.config import Config
from pilot.conversation import conv_qa_prompt_template, conv_templates
from langchain.prompts import PromptTemplate
vicuna_stream_path = "generate_stream"
llmstream_stream_path = "generate_stream"
CFG = Config()
@ -21,38 +28,44 @@ def generate(query):
template_name = "conv_one_shot"
state = conv_templates[template_name].copy()
pt = PromptTemplate(
template=conv_qa_prompt_template,
input_variables=["context", "question"]
)
# pt = PromptTemplate(
# template=conv_qa_prompt_template,
# input_variables=["context", "question"]
# )
result = pt.format(context="This page covers how to use the Chroma ecosystem within LangChain. It is broken into two parts: installation and setup, and then references to specific Chroma wrappers.",
question=query)
# result = pt.format(context="This page covers how to use the Chroma ecosystem within LangChain. It is broken into two parts: installation and setup, and then references to specific Chroma wrappers.",
# question=query)
print(result)
# print(result)
state.append_message(state.roles[0], result)
state.append_message(state.roles[0], query)
state.append_message(state.roles[1], None)
prompt = state.get_prompt()
params = {
"model": "vicuna-13b",
"model": "chatglm-6b",
"prompt": prompt,
"temperature": 0.7,
"temperature": 1.0,
"max_new_tokens": 1024,
"stop": "###"
}
response = requests.post(
url=urljoin(CFG.MODEL_SERVER, vicuna_stream_path), data=json.dumps(params)
url=urljoin(CFG.MODEL_SERVER, llmstream_stream_path), data=json.dumps(params)
)
skip_echo_len = len(params["prompt"]) + 1 - params["prompt"].count("</s>") * 3
for chunk in response.iter_lines(decode_unicode=False, delimiter=b"\0"):
if chunk:
data = json.loads(chunk.decode())
if data["error_code"] == 0:
output = data["text"][skip_echo_len:].strip()
if "vicuna" in CFG.LLM_MODEL:
output = data["text"][skip_echo_len:].strip()
else:
output = data["text"].strip()
state.messages[-1][-1] = output + ""
yield(output)

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@ -16,12 +16,17 @@ DATA_DIR = os.path.join(PILOT_PATH, "data")
nltk.data.path = [os.path.join(PILOT_PATH, "nltk_data")] + nltk.data.path
DEVICE = "cuda" if torch.cuda.is_available() else "cpu"
DEVICE = "cuda" if torch.cuda.is_available() else "mps" if torch.backends.mps.is_available() else "cpu"
LLM_MODEL_CONFIG = {
"flan-t5-base": os.path.join(MODEL_PATH, "flan-t5-base"),
"vicuna-13b": os.path.join(MODEL_PATH, "vicuna-13b"),
"vicuna-7b": os.path.join(MODEL_PATH, "vicuna-7b"),
"text2vec": os.path.join(MODEL_PATH, "text2vec-large-chinese"),
"sentence-transforms": os.path.join(MODEL_PATH, "all-MiniLM-L6-v2")
"sentence-transforms": os.path.join(MODEL_PATH, "all-MiniLM-L6-v2"),
"codegen2-1b": os.path.join(MODEL_PATH, "codegen2-1B"),
"codet5p-2b": os.path.join(MODEL_PATH, "codet5p-2b"),
"chatglm-6b-int4": os.path.join(MODEL_PATH, "chatglm-6b-int4"),
"chatglm-6b": os.path.join(MODEL_PATH, "chatglm-6b"),
}
# Load model config

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@ -15,6 +15,9 @@ DB_SETTINGS = {
"port": CFG.LOCAL_DB_PORT
}
ROLE_USER = "USER"
ROLE_ASSISTANT = "Assistant"
class SeparatorStyle(Enum):
SINGLE = auto()
TWO = auto()

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@ -9,6 +9,8 @@ from transformers import (
AutoModel
)
from pilot.configs.model_config import DEVICE
class BaseLLMAdaper:
"""The Base class for multi model, in our project.
We will support those model, which performance resemble ChatGPT """
@ -61,13 +63,29 @@ class ChatGLMAdapater(BaseLLMAdaper):
"""LLM Adatpter for THUDM/chatglm-6b"""
def match(self, model_path: str):
return "chatglm" in model_path
def loader(self, model_path: str, from_pretrained_kwargs: dict):
tokenizer = AutoTokenizer.from_pretrained(model_path, trust_remote_code=True)
model = AutoModel.from_pretrained(
model_path, trust_remote_code=True, **from_pretrained_kwargs
).half().cuda()
return model, tokenizer
if DEVICE != "cuda":
model = AutoModel.from_pretrained(
model_path, trust_remote_code=True, **from_pretrained_kwargs
).float()
return model, tokenizer
else:
model = AutoModel.from_pretrained(
model_path, trust_remote_code=True, **from_pretrained_kwargs
).half().cuda()
return model, tokenizer
class CodeGenAdapter(BaseLLMAdaper):
pass
class StarCoderAdapter(BaseLLMAdaper):
pass
class T5CodeAdapter(BaseLLMAdaper):
pass
class KoalaLLMAdapter(BaseLLMAdaper):
"""Koala LLM Adapter which Based LLaMA """
@ -91,6 +109,7 @@ class GPT4AllAdapter(BaseLLMAdaper):
register_llm_model_adapters(VicunaLLMAdapater)
register_llm_model_adapters(ChatGLMAdapater)
# TODO Default support vicuna, other model need to tests and Evaluate
register_llm_model_adapters(BaseLLMAdaper)

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@ -1,3 +0,0 @@
#!/usr/bin/env python3
# -*- coding:utf-8 -*-

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@ -0,0 +1,49 @@
#!/usr/bin/env python3
# -*- coding:utf-8 -*-
import torch
from pilot.conversation import ROLE_USER, ROLE_ASSISTANT
@torch.inference_mode()
def chatglm_generate_stream(model, tokenizer, params, device, context_len=2048, stream_interval=2):
"""Generate text using chatglm model's chat api """
prompt = params["prompt"]
temperature = float(params.get("temperature", 1.0))
top_p = float(params.get("top_p", 1.0))
stop = params.get("stop", "###")
echo = params.get("echo", False)
generate_kwargs = {
"do_sample": True if temperature > 1e-5 else False,
"top_p": top_p,
"repetition_penalty": 1.0,
"logits_processor": None
}
if temperature > 1e-5:
generate_kwargs["temperature"] = temperature
# TODO, Fix this
hist = []
messages = prompt.split(stop)
# Add history chat to hist for model.
for i in range(1, len(messages) - 2, 2):
hist.append((messages[i].split(ROLE_USER + ":")[1], messages[i+1].split(ROLE_ASSISTANT + ":")[1]))
query = messages[-2].split(ROLE_USER + ":")[1]
print("Query Message: ", query)
output = ""
i = 0
for i, (response, new_hist) in enumerate(model.stream_chat(tokenizer, query, hist, **generate_kwargs)):
if echo:
output = query + " " + response
else:
output = response
yield output
yield output

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@ -0,0 +1,125 @@
#!/usr/bin/env python3
# -*- coding:utf-8 -*-
import math
from typing import Optional, Tuple
import torch
from torch import nn
import transformers
def rotate_half(x):
"""Rotates half the hidden dims of the input."""
x1 = x[..., : x.shape[-1] // 2].clone()
x2 = x[..., x.shape[-1] // 2 :].clone()
return torch.cat((-x2, x1), dim=-1)
def apply_rotary_pos_emb(q, k, cos, sin, position_ids):
gather_indices = position_ids[:, None, :, None] # [bs, 1, seq_len, 1]
gather_indices = gather_indices.repeat(1, cos.shape[1], 1, cos.shape[3])
cos = torch.gather(cos.repeat(gather_indices.shape[0], 1, 1, 1), 2, gather_indices)
sin = torch.gather(sin.repeat(gather_indices.shape[0], 1, 1, 1), 2, gather_indices)
q_embed = (q * cos) + (rotate_half(q) * sin)
k_embed = (k * cos) + (rotate_half(k) * sin)
return q_embed, k_embed
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
output_attentions: bool = False,
use_cache: bool = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
bsz, q_len, _ = hidden_states.size()
query_states = (
self.q_proj(hidden_states)
.view(bsz, q_len, self.num_heads, self.head_dim)
.transpose(1, 2)
)
key_states = (
self.k_proj(hidden_states)
.view(bsz, q_len, self.num_heads, self.head_dim)
.transpose(1, 2)
)
value_states = (
self.v_proj(hidden_states)
.view(bsz, q_len, self.num_heads, self.head_dim)
.transpose(1, 2)
)
kv_seq_len = key_states.shape[-2]
if past_key_value is not None:
kv_seq_len += past_key_value[0].shape[-2]
cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
query_states, key_states = apply_rotary_pos_emb(
query_states, key_states, cos, sin, position_ids
)
# [bsz, nh, t, hd]
if past_key_value is not None:
# reuse k, v, self_attention
key_states = torch.cat([past_key_value[0], key_states], dim=2)
value_states = torch.cat([past_key_value[1], value_states], dim=2)
past_key_value = (key_states, value_states) if use_cache else None
attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(
self.head_dim
)
if attn_weights.size() != (bsz, self.num_heads, q_len, kv_seq_len):
raise ValueError(
f"Attention weights should be of size {(bsz * self.num_heads, q_len, kv_seq_len)}, but is"
f" {attn_weights.size()}"
)
if attention_mask is not None:
if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
raise ValueError(
f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
)
attn_weights = attn_weights + attention_mask
attn_weights = torch.max(
attn_weights, torch.tensor(torch.finfo(attn_weights.dtype).min)
)
# upcast attention to fp32
attn_weights = nn.functional.softmax(attn_weights, dim=-1, dtype=torch.float32).to(
query_states.dtype
)
attn_output = torch.matmul(attn_weights, value_states)
if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.transpose(1, 2)
attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
attn_output = self.o_proj(attn_output)
if not output_attentions:
attn_weights = None
return attn_output, attn_weights, past_key_value
def replace_llama_attn_with_non_inplace_operations():
"""Avoid bugs in mps backend by not using in-place operations."""
transformers.models.llama.modeling_llama.LlamaAttention.forward = forward
import transformers
def replace_llama_attn_with_non_inplace_operations():
"""Avoid bugs in mps backend by not using in-place operations."""
transformers.models.llama.modeling_llama.LlamaAttention.forward = forward

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@ -2,11 +2,39 @@
# -*- coding: utf-8 -*-
import torch
import sys
import warnings
from pilot.singleton import Singleton
from typing import Optional
from pilot.model.compression import compress_module
from pilot.model.adapter import get_llm_model_adapter
from pilot.utils import get_gpu_memory
from pilot.model.llm.monkey_patch import replace_llama_attn_with_non_inplace_operations
def raise_warning_for_incompatible_cpu_offloading_configuration(
device: str, load_8bit: bool, cpu_offloading: bool
):
if cpu_offloading:
if not load_8bit:
warnings.warn(
"The cpu-offloading feature can only be used while also using 8-bit-quantization.\n"
"Use '--load-8bit' to enable 8-bit-quantization\n"
"Continuing without cpu-offloading enabled\n"
)
return False
if not "linux" in sys.platform:
warnings.warn(
"CPU-offloading is only supported on linux-systems due to the limited compatability with the bitsandbytes-package\n"
"Continuing without cpu-offloading enabled\n"
)
return False
if device != "cuda":
warnings.warn(
"CPU-offloading is only enabled when using CUDA-devices\n"
"Continuing without cpu-offloading enabled\n"
)
return False
return cpu_offloading
class ModelLoader(metaclass=Singleton):
@ -30,26 +58,37 @@ class ModelLoader(metaclass=Singleton):
}
# TODO multi gpu support
def loader(self, num_gpus, load_8bit=False, debug=False):
def loader(self, num_gpus, load_8bit=False, debug=False, cpu_offloading=False, max_gpu_memory: Optional[str]=None):
if self.device == "cpu":
kwargs = {}
kwargs = {"torch_dtype": torch.float32}
elif self.device == "cuda":
kwargs = {"torch_dtype": torch.float16}
if num_gpus == "auto":
num_gpus = int(num_gpus)
if num_gpus != 1:
kwargs["device_map"] = "auto"
if max_gpu_memory is None:
kwargs["device_map"] = "sequential"
available_gpu_memory = get_gpu_memory(num_gpus)
kwargs["max_memory"] = {
i: str(int(available_gpu_memory[i] * 0.85)) + "GiB"
for i in range(num_gpus)
}
else:
num_gpus = int(num_gpus)
if num_gpus != 1:
kwargs.update({
"device_map": "auto",
"max_memory": {i: "13GiB" for i in range(num_gpus)},
})
kwargs["max_memory"] = {i: max_gpu_memory for i in range(num_gpus)}
elif self.device == "mps":
kwargs = kwargs = {"torch_dtype": torch.float16}
replace_llama_attn_with_non_inplace_operations()
else:
# Todo Support mps for practise
raise ValueError(f"Invalid device: {self.device}")
# TODO when cpu loading, need use quantization config
llm_adapter = get_llm_model_adapter(self.model_path)
model, tokenizer = llm_adapter.loader(self.model_path, kwargs)
@ -61,7 +100,7 @@ class ModelLoader(metaclass=Singleton):
else:
compress_module(model, self.device)
if (self.device == "cuda" and num_gpus == 1):
if (self.device == "cuda" and num_gpus == 1 and not cpu_offloading) or self.device == "mps":
model.to(self.device)
if debug:

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@ -0,0 +1,82 @@
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from typing import List
from functools import cache
from pilot.model.inference import generate_stream
class BaseChatAdpter:
"""The Base class for chat with llm models. it will match the model,
and fetch output from model"""
def match(self, model_path: str):
return True
def get_generate_stream_func(self):
"""Return the generate stream handler func"""
pass
llm_model_chat_adapters: List[BaseChatAdpter] = []
def register_llm_model_chat_adapter(cls):
"""Register a chat adapter"""
llm_model_chat_adapters.append(cls())
@cache
def get_llm_chat_adapter(model_path: str) -> BaseChatAdpter:
"""Get a chat generate func for a model"""
for adapter in llm_model_chat_adapters:
if adapter.match(model_path):
return adapter
raise ValueError(f"Invalid model for chat adapter {model_path}")
class VicunaChatAdapter(BaseChatAdpter):
""" Model chat Adapter for vicuna"""
def match(self, model_path: str):
return "vicuna" in model_path
def get_generate_stream_func(self):
return generate_stream
class ChatGLMChatAdapter(BaseChatAdpter):
""" Model chat Adapter for ChatGLM"""
def match(self, model_path: str):
return "chatglm" in model_path
def get_generate_stream_func(self):
from pilot.model.chatglm_llm import chatglm_generate_stream
return chatglm_generate_stream
class CodeT5ChatAdapter(BaseChatAdpter):
""" Model chat adapter for CodeT5 """
def match(self, model_path: str):
return "codet5" in model_path
def get_generate_stream_func(self):
# TODO
pass
class CodeGenChatAdapter(BaseChatAdpter):
""" Model chat adapter for CodeGen """
def match(self, model_path: str):
return "codegen" in model_path
def get_generate_stream_func(self):
# TODO
pass
register_llm_model_chat_adapter(VicunaChatAdapter)
register_llm_model_chat_adapter(ChatGLMChatAdapter)
register_llm_model_chat_adapter(BaseChatAdpter)

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@ -23,20 +23,65 @@ from pilot.model.inference import generate_output, get_embeddings
from pilot.model.loader import ModelLoader
from pilot.configs.model_config import *
from pilot.configs.config import Config
from pilot.server.chat_adapter import get_llm_chat_adapter
CFG = Config()
model_path = LLM_MODEL_CONFIG[CFG.LLM_MODEL]
ml = ModelLoader(model_path=model_path)
model, tokenizer = ml.loader(num_gpus=1, load_8bit=ISLOAD_8BIT, debug=ISDEBUG)
#model, tokenizer = load_model(model_path=model_path, device=DEVICE, num_gpus=1, load_8bit=True, debug=False)
class ModelWorker:
def __init__(self):
pass
# TODO
def __init__(self, model_path, model_name, device, num_gpus=1):
if model_path.endswith("/"):
model_path = model_path[:-1]
self.model_name = model_name or model_path.split("/")[-1]
self.device = device
self.ml = ModelLoader(model_path=model_path)
self.model, self.tokenizer = self.ml.loader(num_gpus, load_8bit=ISLOAD_8BIT, debug=ISDEBUG)
if hasattr(self.model.config, "max_sequence_length"):
self.context_len = self.model.config.max_sequence_length
elif hasattr(self.model.config, "max_position_embeddings"):
self.context_len = self.model.config.max_position_embeddings
else:
self.context_len = 2048
self.llm_chat_adapter = get_llm_chat_adapter(model_path)
self.generate_stream_func = self.llm_chat_adapter.get_generate_stream_func()
def get_queue_length(self):
if model_semaphore is None or model_semaphore._value is None or model_semaphore._waiters is None:
return 0
else:
CFG.LIMIT_MODEL_CONCURRENCY - model_semaphore._value + len(model_semaphore._waiters)
def generate_stream_gate(self, params):
try:
for output in self.generate_stream_func(
self.model,
self.tokenizer,
params,
DEVICE,
CFG.MAX_POSITION_EMBEDDINGS
):
print("output: ", output)
ret = {
"text": output,
"error_code": 0,
}
yield json.dumps(ret).encode() + b"\0"
except torch.cuda.CudaError:
ret = {
"text": "**GPU OutOfMemory, Please Refresh.**",
"error_code": 0
}
yield json.dumps(ret).encode() + b"\0"
def get_embeddings(self, prompt):
return get_embeddings(self.model, self.tokenizer, prompt)
app = FastAPI()
@ -61,41 +106,17 @@ def release_model_semaphore():
model_semaphore.release()
def generate_stream_gate(params):
try:
for output in generate_stream(
model,
tokenizer,
params,
DEVICE,
CFG.MAX_POSITION_EMBEDDINGS,
):
print("output: ", output)
ret = {
"text": output,
"error_code": 0,
}
yield json.dumps(ret).encode() + b"\0"
except torch.cuda.CudaError:
ret = {
"text": "**GPU OutOfMemory, Please Refresh.**",
"error_code": 0
}
yield json.dumps(ret).encode() + b"\0"
@app.post("/generate_stream")
async def api_generate_stream(request: Request):
global model_semaphore, global_counter
global_counter += 1
params = await request.json()
print(model, tokenizer, params, DEVICE)
if model_semaphore is None:
model_semaphore = asyncio.Semaphore(CFG.LIMIT_MODEL_CONCURRENCY)
await model_semaphore.acquire()
generator = generate_stream_gate(params)
generator = worker.generate_stream_gate(params)
background_tasks = BackgroundTasks()
background_tasks.add_task(release_model_semaphore)
return StreamingResponse(generator, background=background_tasks)
@ -111,7 +132,7 @@ def generate(prompt_request: PromptRequest):
response = []
rsp_str = ""
output = generate_stream_gate(params)
output = worker.generate_stream_gate(params)
for rsp in output:
# rsp = rsp.decode("utf-8")
rsp_str = str(rsp, "utf-8")
@ -125,9 +146,21 @@ def generate(prompt_request: PromptRequest):
def embeddings(prompt_request: EmbeddingRequest):
params = {"prompt": prompt_request.prompt}
print("Received prompt: ", params["prompt"])
output = get_embeddings(model, tokenizer, params["prompt"])
output = worker.get_embeddings(params["prompt"])
return {"response": [float(x) for x in output]}
if __name__ == "__main__":
model_path = LLM_MODEL_CONFIG[CFG.LLM_MODEL]
print(model_path, DEVICE)
worker = ModelWorker(
model_path=model_path,
model_name=CFG.LLM_MODEL,
device=DEVICE,
num_gpus=1
)
uvicorn.run(app, host="0.0.0.0", port=CFG.MODEL_PORT, log_level="info")

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@ -364,8 +364,16 @@ def http_bot(state, mode, sql_mode, db_selector, temperature, max_new_tokens, re
for chunk in response.iter_lines(decode_unicode=False, delimiter=b"\0"):
if chunk:
data = json.loads(chunk.decode())
""" TODO Multi mode output handler, rewrite this for multi model, use adapter mode.
"""
if data["error_code"] == 0:
output = data["text"][skip_echo_len:].strip()
if "vicuna" in CFG.LLM_MODEL:
output = data["text"][skip_echo_len:].strip()
else:
output = data["text"].strip()
output = post_process_code(output)
state.messages[-1][-1] = output + ""
yield (state, state.to_gradio_chatbot()) + (disable_btn,) * 5

View File

@ -42,6 +42,7 @@ tenacity==8.2.2
peft
pycocoevalcap
sentence-transformers
cpm_kernels
umap-learn
notebook
gradio==3.23