就在不久前,Mistral 公司在开源了 Pixtral 12B 视觉多模态大模型之后,又开源了自家的企业级小型模型 Mistral-Small-Instruct-2409 (22B),这是 Mistral AI 最新的企业级小型模型,是 Mistral Small v24.02 的升级版。该机型可根据 Mistral Research License 使用,为客户提供了灵活的选择,使其能够在翻译、摘要、情感分析和其他不需要完整通用模型的任务中,选择经济高效、快速可靠的解决方案。
Mistral Small 雏形采用 Mixtral-8X7B-v0.1(46.7B),这是一个具有 12B 活动参数的稀疏专家混合模型。它的推理能力更强,功能更多,可以生成和推理代码,并且是多语言的,支持英语、法语、德语、意大利语和西班牙语。
太激动人心了, Mistral 型号的性能总是出类拔萃。现在,我们在很多缝隙上都有了出色的覆盖范围
-
8b- Llama 3.1 8b
-
12b- Nemo 12b
-
22b- Mistral Small
-
27b- Gemma-2 27b
-
35b- Command-R 35b 08-2024
-
40-60b- GAP (我相信这里有两个新的 MOE,但我最后发现 Llamacpp 不支持它们)
-
70b- Llama 3.1 70b
-
103b- Command-R+ 103b
-
123b- Mistral Large 2
-
141b- WizardLM-2 8x22b
-
230b- Deepseek V2/2.5
-
405b- Llama 3.1 405b
Mistral Small v24.09 拥有 220 亿个参数,为客户提供了介于 Mistral NeMo 12B 和 Mistral Large 2 之间的便捷中间点,提供了可在各种平台和环境中部署的经济高效的解决方案。。
Mistral Small v24.09 拥有 220 亿个参数,为客户提供了介于 Mistral NeMo 12B 和 Mistral Large 2 之间的便捷中间点,提供了可在各种平台和环境中部署的经济高效的解决方案。如下图所示,与以前的模型相比,新的小型模型在人类对齐、推理能力和代码方面都有显著改进。
Mistral-Small-Instruct-2409 是一个指示微调版本,具有以下特点:
- 22B 参数
- 词汇量达 32768
- 支持函数调用
- 128k 序列长度
使用
vLLM(推荐)
安装 vLLM >= v0.6.1.post1
bash
pip install --upgrade vllm
安装 mistral_common >= 1.4.1
bash
pip install --upgrade mistral_common
本地
python
from vllm import LLM
from vllm.sampling_params import SamplingParams
model_name = "mistralai/Mistral-Small-Instruct-2409"
sampling_params = SamplingParams(max_tokens=8192)
# note that running Mistral-Small on a single GPU requires at least 44 GB of GPU RAM
# If you want to divide the GPU requirement over multiple devices, please add *e.g.* `tensor_parallel=2`
llm = LLM(model=model_name, tokenizer_mode="mistral", config_format="mistral", load_format="mistral")
prompt = "How often does the letter r occur in Mistral?"
messages = [
{
"role": "user",
"content": prompt
},
]
outputs = llm.chat(messages, sampling_params=sampling_params)
print(outputs[0].outputs[0].text)
服务器
bash
vllm serve mistralai/Mistral-Small-Instruct-2409 --tokenizer_mode mistral --config_format mistral --load_format mistral
注意: 在单 GPU 上运行 Mistral-Small 至少需要 44 GB GPU 内存。
如果要将 GPU 需求分配给多个设备,请添加 --tensor_parallel=2
等信息
客户端
bash
curl --location 'http://<your-node-url>:8000/v1/chat/completions' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer token' \
--data '{
"model": "mistralai/Mistral-Small-Instruct-2409",
"messages": [
{
"role": "user",
"content": "How often does the letter r occur in Mistral?"
}
]
}'
Mistral-inference
安装mistral_inference >= 1.4.1
bash
pip install mistral_inference --upgrade
下载
python
from huggingface_hub import snapshot_download
from pathlib import Path
mistral_models_path = Path.home().joinpath('mistral_models', '22B-Instruct-Small')
mistral_models_path.mkdir(parents=True, exist_ok=True)
snapshot_download(repo_id="mistralai/Mistral-Small-Instruct-2409", allow_patterns=["params.json", "consolidated.safetensors", "tokenizer.model.v3"], local_dir=mistral_models_path)
聊天
bash
mistral-chat $HOME/mistral_models/22B-Instruct-Small --instruct --max_tokens 256
Instruct following
python
from mistral_inference.transformer import Transformer
from mistral_inference.generate import generate
from mistral_common.tokens.tokenizers.mistral import MistralTokenizer
from mistral_common.protocol.instruct.messages import UserMessage
from mistral_common.protocol.instruct.request import ChatCompletionRequest
tokenizer = MistralTokenizer.from_file(f"{mistral_models_path}/tokenizer.model.v3")
model = Transformer.from_folder(mistral_models_path)
completion_request = ChatCompletionRequest(messages=[UserMessage(content="How often does the letter r occur in Mistral?")])
tokens = tokenizer.encode_chat_completion(completion_request).tokens
out_tokens, _ = generate([tokens], model, max_tokens=64, temperature=0.0, eos_id=tokenizer.instruct_tokenizer.tokenizer.eos_id)
result = tokenizer.instruct_tokenizer.tokenizer.decode(out_tokens[0])
print(result)
Function calling
python
from mistral_common.protocol.instruct.tool_calls import Function, Tool
from mistral_inference.transformer import Transformer
from mistral_inference.generate import generate
from mistral_common.tokens.tokenizers.mistral import MistralTokenizer
from mistral_common.protocol.instruct.messages import UserMessage
from mistral_common.protocol.instruct.request import ChatCompletionRequest
tokenizer = MistralTokenizer.from_file(f"{mistral_models_path}/tokenizer.model.v3")
model = Transformer.from_folder(mistral_models_path)
completion_request = ChatCompletionRequest(
tools=[
Tool(
function=Function(
name="get_current_weather",
description="Get the current weather",
parameters={
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA",
},
"format": {
"type": "string",
"enum": ["celsius", "fahrenheit"],
"description": "The temperature unit to use. Infer this from the users location.",
},
},
"required": ["location", "format"],
},
)
)
],
messages=[
UserMessage(content="What's the weather like today in Paris?"),
],
)
tokens = tokenizer.encode_chat_completion(completion_request).tokens
out_tokens, _ = generate([tokens], model, max_tokens=64, temperature=0.0, eos_id=tokenizer.instruct_tokenizer.tokenizer.eos_id)
result = tokenizer.instruct_tokenizer.tokenizer.decode(out_tokens[0])
print(result)
Hugging Face Transformers
python
from transformers import LlamaTokenizerFast, MistralForCausalLM
import torch
device = "cuda"
tokenizer = LlamaTokenizerFast.from_pretrained('mistralai/Mistral-Small-Instruct-2409')
tokenizer.pad_token = tokenizer.eos_token
model = MistralForCausalLM.from_pretrained('mistralai/Mistral-Small-Instruct-2409', torch_dtype=torch.bfloat16)
model = model.to(device)
prompt = "How often does the letter r occur in Mistral?"
messages = [
{"role": "user", "content": prompt},
]
model_input = tokenizer.apply_chat_template(messages, tokenize=True, add_generation_prompt=True, return_tensors="pt").to(device)
gen = model.generate(model_input, max_new_tokens=150)
dec = tokenizer.batch_decode(gen)
print(dec)
输出
<s>
[INST]
How often does the letter r occur in Mistral?
[/INST]
To determine how often the letter "r" occurs in the word "Mistral,"
we can simply count the instances of "r" in the word.
The word "Mistral" is broken down as follows:
- M
- i
- s
- t
- r
- a
- l
Counting the "r"s, we find that there is only one "r" in "Mistral."
Therefore, the letter "r" occurs once in the word "Mistral."
</s>
看来 Mistral 尝试用 CoT 来修复草莓问题🙂
资料
https://mistral.ai/news/september-24-release/
https://artificialanalysis.ai/models/mistral-small
https://huggingface.co/mistralai/Mistral-Small-Instruct-2409