From 03111d5c5b5a416059e89d6ba76d3b62c739f2cb Mon Sep 17 00:00:00 2001
From: tc-mb <caitianchi@modelbest.cn>
Date: Wed, 6 Aug 2025 16:25:53 +0800
Subject: [PATCH] change quan doc to cookbook

---
 quantize/bnb_quantize.py | 81 ----------------------------------------
 1 file changed, 81 deletions(-)
 delete mode 100644 quantize/bnb_quantize.py

diff --git a/quantize/bnb_quantize.py b/quantize/bnb_quantize.py
deleted file mode 100644
index 7aa7b46..0000000
--- a/quantize/bnb_quantize.py
+++ /dev/null
@@ -1,81 +0,0 @@
-"""
-the script will use bitandbytes to quantize the MiniCPM-Llama3-V-2_5 model.
-the be quantized model can be finetuned by MiniCPM-Llama3-V-2_5 or not.
-you only need to set the model_path 、save_path and run bash code 
-
-cd MiniCPM-V
-python quantize/bnb_quantize.py
-
-you will get the quantized model in save_path、quantized_model test time and gpu usage
-"""
-
-
-import torch
-from transformers import AutoModel, AutoTokenizer, BitsAndBytesConfig
-from PIL import Image
-import time
-import torch
-import GPUtil
-import os
-
-assert torch.cuda.is_available(),"CUDA is not available, but this code requires a GPU."
-
-device = 'cuda'  # Select GPU to use
-model_path = '/root/ld/ld_model_pretrained/MiniCPM-Llama3-V-2_5' # Model download path
-save_path = '/root/ld/ld_model_pretrain/MiniCPM-Llama3-V-2_5_int4' # Quantized model save path
-image_path = './assets/airplane.jpeg'
-
-
-# Create a configuration object to specify quantization parameters
-quantization_config = BitsAndBytesConfig(
-    load_in_4bit=True,  # Whether to perform 4-bit quantization
-    load_in_8bit=False,  # Whether to perform 8-bit quantization
-    bnb_4bit_compute_dtype=torch.float16,  # Computation precision setting
-    bnb_4bit_quant_storage=torch.uint8,  # Storage format for quantized weights
-    bnb_4bit_quant_type="nf4",  # Quantization format, here using normally distributed int4
-    bnb_4bit_use_double_quant=True,  # Whether to use double quantization, i.e., quantizing zeropoint and scaling parameters
-    llm_int8_enable_fp32_cpu_offload=False,  # Whether LLM uses int8, with fp32 parameters stored on the CPU
-    llm_int8_has_fp16_weight=False,  # Whether mixed precision is enabled
-    llm_int8_skip_modules=["out_proj", "kv_proj", "lm_head"],  # Modules not to be quantized
-    llm_int8_threshold=6.0  # Outlier value in the llm.int8() algorithm, distinguishing whether to perform quantization based on this value
-)
-
-tokenizer = AutoTokenizer.from_pretrained(model_path, trust_remote_code=True)
-model = AutoModel.from_pretrained(
-    model_path,
-    device_map=device,  # Allocate model to device
-    quantization_config=quantization_config,
-    trust_remote_code=True
-)
-
-gpu_usage = GPUtil.getGPUs()[0].memoryUsed  
-start=time.time()
-response = model.chat(
-    image=Image.open(image_path).convert("RGB"),
-    msgs=[
-        {
-            "role": "user",
-            "content": "What is in this picture?"
-        }
-    ],
-    tokenizer=tokenizer
-) # 模型推理
-print('Output after quantization:',response)
-print('Inference time after quantization:',time.time()-start)
-print(f"GPU memory usage after quantization: {round(gpu_usage/1024,2)}GB")
-
-"""
-Expected output:
-
-    Output after quantization: This picture contains specific parts of an airplane, including wings, engines, and tail sections. These components are key parts of large commercial aircraft.
-    The wings support lift during flight, while the engines provide thrust to move the plane forward. The tail section is typically used for stabilizing flight and plays a role in airline branding.
-    The design and color of the airplane indicate that it belongs to Air China, likely a passenger aircraft due to its large size and twin-engine configuration.
-    There are no markings or insignia on the airplane indicating the specific model or registration number; such information may require additional context or a clearer perspective to discern.
-    Inference time after quantization: 8.583992719650269 seconds
-    GPU memory usage after quantization: 6.41 GB
-"""
-
-# Save the model and tokenizer
-os.makedirs(save_path, exist_ok=True)
-model.save_pretrained(save_path, safe_serialization=True)
-tokenizer.save_pretrained(save_path)
\ No newline at end of file