594 lines
23 KiB
Python
Executable File
594 lines
23 KiB
Python
Executable File
# python embedd_micro.py --use_int8 Fastest
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import argparse
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import time
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from dataclasses import dataclass
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from typing import Dict, List, Optional, Tuple
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import numpy as np
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import torch
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from torch import nn
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from torchao import quantize_
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from transformers import AutoModel, BitsAndBytesConfig
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from tqdm import tqdm
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from contextlib import contextmanager
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@dataclass
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class BenchmarkConfig:
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model_path: str
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batch_sizes: List[int]
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seq_length: int
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num_runs: int
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use_fp16: bool = True
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use_int4: bool = False
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use_int8: bool = False # Add this parameter
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use_cuda_graphs: bool = False
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use_flash_attention: bool = False
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use_linear8bitlt: bool = False
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class CUDAGraphContainer:
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"""Container for managing CUDA graphs for different batch sizes."""
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def __init__(self, model: nn.Module, seq_length: int):
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self.model = model
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self.seq_length = seq_length
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self.graphs: Dict[int, CUDAGraphWrapper] = {}
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def get_or_create(self, batch_size: int) -> 'CUDAGraphWrapper':
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if batch_size not in self.graphs:
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self.graphs[batch_size] = CUDAGraphWrapper(
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self.model, batch_size, self.seq_length
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)
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return self.graphs[batch_size]
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class CUDAGraphWrapper:
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"""Wrapper for CUDA graph capture and replay."""
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def __init__(self, model: nn.Module, batch_size: int, seq_length: int):
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self.model = model
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self.static_input = self._create_random_batch(batch_size, seq_length)
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self.static_attention_mask = torch.ones_like(self.static_input)
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# Warm up
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self._warmup()
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# Capture graph
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self.graph = torch.cuda.CUDAGraph()
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with torch.cuda.graph(self.graph):
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self.static_output = self.model(
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input_ids=self.static_input,
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attention_mask=self.static_attention_mask
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)
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def _create_random_batch(self, batch_size: int, seq_length: int) -> torch.Tensor:
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return torch.randint(
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0, 1000, (batch_size, seq_length),
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device="cuda",
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dtype=torch.long
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)
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def _warmup(self, num_warmup: int = 3):
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with torch.no_grad():
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for _ in range(num_warmup):
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self.model(
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input_ids=self.static_input,
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attention_mask=self.static_attention_mask
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)
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def __call__(self, input_ids: torch.Tensor, attention_mask: torch.Tensor) -> torch.Tensor:
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self.static_input.copy_(input_ids)
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self.static_attention_mask.copy_(attention_mask)
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self.graph.replay()
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return self.static_output
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class ModelOptimizer:
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"""Applies various optimizations to the model."""
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@staticmethod
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def optimize(model: nn.Module, config: BenchmarkConfig) -> nn.Module:
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print("\nApplying model optimizations:")
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if model is None:
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raise ValueError("Cannot optimize None model")
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# Move to GPU
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model = model.cuda()
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print("- Model moved to GPU")
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# FP16
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if config.use_fp16 and not config.use_int4:
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model = model.half()
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# use torch compile
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model = torch.compile(model)
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print("- Using FP16 precision")
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# Check if using SDPA
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if torch.version.cuda and float(torch.version.cuda[:3]) >= 11.6:
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if hasattr(torch.nn.functional, 'scaled_dot_product_attention'):
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print("- Using PyTorch SDPA (scaled_dot_product_attention)")
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else:
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print("- PyTorch SDPA not available")
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# Flash Attention
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if config.use_flash_attention:
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try:
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from flash_attn.flash_attention import FlashAttention
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print("- Flash Attention 2 available")
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if hasattr(model.config, "attention_mode"):
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model.config.attention_mode = "flash_attention_2"
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print(" - Enabled Flash Attention 2 mode")
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except ImportError:
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print("- Flash Attention not available")
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# Memory efficient attention
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try:
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from xformers.ops import memory_efficient_attention
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if hasattr(model, 'enable_xformers_memory_efficient_attention'):
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model.enable_xformers_memory_efficient_attention()
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print("- Enabled xformers memory efficient attention")
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else:
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print("- Model doesn't support xformers")
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except (ImportError, AttributeError):
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print("- Xformers not available")
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model.eval()
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print("- Model set to eval mode")
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return model
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class Timer:
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"""Handles accurate GPU timing using CUDA events."""
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def __init__(self):
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self.start_event = torch.cuda.Event(enable_timing=True)
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self.end_event = torch.cuda.Event(enable_timing=True)
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@contextmanager
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def timing(self):
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self.start_event.record()
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yield
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self.end_event.record()
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self.end_event.synchronize()
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def elapsed_time(self) -> float:
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return self.start_event.elapsed_time(self.end_event) / 1000 # ms to seconds
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class Benchmark:
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"""Main benchmark runner."""
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def __init__(self, config: BenchmarkConfig):
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self.config = config
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try:
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self.model = self._load_model()
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if self.model is None:
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raise ValueError("Model initialization failed - model is None")
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self.cuda_graphs = (
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CUDAGraphContainer(self.model, config.seq_length)
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if config.use_cuda_graphs
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else None
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)
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self.timer = Timer()
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except Exception as e:
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print(f"ERROR in benchmark initialization: {str(e)}")
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raise
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def _load_model(self) -> nn.Module:
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print(f"Loading model from {self.config.model_path}...")
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try:
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# Int4 quantization using HuggingFace integration
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if self.config.use_int4:
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import bitsandbytes as bnb
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print(f"- bitsandbytes version: {bnb.__version__}")
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# 检查是否使用自定义的8bit量化
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if hasattr(self.config, 'use_linear8bitlt') and self.config.use_linear8bitlt:
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print("- Using custom Linear8bitLt replacement for all linear layers")
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# 加载原始模型（不使用量化配置）
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import bitsandbytes as bnb
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import torch
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# set default to half
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torch.set_default_dtype(torch.float16)
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compute_dtype = torch.float16 if self.config.use_fp16 else torch.float32
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model = AutoModel.from_pretrained(
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self.config.model_path,
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torch_dtype=compute_dtype,
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)
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# 定义替换函数
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def replace_linear_with_linear8bitlt(model):
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"""递归地将模型中的所有nn.Linear层替换为Linear8bitLt"""
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for name, module in list(model.named_children()):
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if isinstance(module, nn.Linear):
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# 获取原始线性层的参数
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in_features = module.in_features
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out_features = module.out_features
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bias = module.bias is not None
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# 创建8bit线性层
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# print size
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print(f"in_features: {in_features}, out_features: {out_features}")
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new_module = bnb.nn.Linear8bitLt(
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in_features,
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out_features,
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bias=bias,
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has_fp16_weights=False
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)
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# 复制权重和偏置
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new_module.weight.data = module.weight.data
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if bias:
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new_module.bias.data = module.bias.data
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# 替换模块
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setattr(model, name, new_module)
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else:
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# 递归处理子模块
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replace_linear_with_linear8bitlt(module)
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return model
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# 替换所有线性层
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model = replace_linear_with_linear8bitlt(model)
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# add torch compile
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model = torch.compile(model)
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# 将模型移到GPU（量化发生在这里）
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device = "cuda" if torch.cuda.is_available() else "cpu"
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model = model.to(device)
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print("- All linear layers replaced with Linear8bitLt")
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else:
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# 使用原来的Int4量化方法
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print("- Using bitsandbytes for Int4 quantization")
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# Create quantization config
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compute_dtype = torch.float16 if self.config.use_fp16 else torch.float32
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quantization_config = BitsAndBytesConfig(
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load_in_4bit=True,
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bnb_4bit_compute_dtype=compute_dtype,
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bnb_4bit_use_double_quant=True,
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bnb_4bit_quant_type="nf4"
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)
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print("- Quantization config:", quantization_config)
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# Load model directly with quantization config
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model = AutoModel.from_pretrained(
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self.config.model_path,
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quantization_config=quantization_config,
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torch_dtype=compute_dtype,
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device_map="auto" # Let HF decide on device mapping
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)
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# Check if model loaded successfully
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if model is None:
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raise ValueError("Model loading returned None")
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print(f"- Model type: {type(model)}")
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# Apply optimizations directly here
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print("\nApplying model optimizations:")
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if hasattr(self.config, 'use_linear8bitlt') and self.config.use_linear8bitlt:
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print("- Model moved to GPU with Linear8bitLt quantization")
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else:
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# Skip moving to GPU since device_map="auto" already did that
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print("- Model already on GPU due to device_map='auto'")
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# Skip FP16 conversion since we specified compute_dtype
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print(f"- Using {compute_dtype} for compute dtype")
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# Check CUDA and SDPA
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if torch.version.cuda and float(torch.version.cuda[:3]) >= 11.6:
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if hasattr(torch.nn.functional, 'scaled_dot_product_attention'):
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print("- Using PyTorch SDPA (scaled_dot_product_attention)")
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else:
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print("- PyTorch SDPA not available")
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# Try xformers if available
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try:
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from xformers.ops import memory_efficient_attention
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if hasattr(model, 'enable_xformers_memory_efficient_attention'):
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model.enable_xformers_memory_efficient_attention()
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print("- Enabled xformers memory efficient attention")
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else:
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print("- Model doesn't support xformers")
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except (ImportError, AttributeError):
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print("- Xformers not available")
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# Set to eval mode
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model.eval()
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print("- Model set to eval mode")
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# Int8 quantization using HuggingFace integration
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# Int8 quantization using TorchAO
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elif self.config.use_int8:
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print("- Using TorchAO for Int8 dynamic activation and Int8 weight quantization")
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# Import the quantize_ function and the quantization config
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from torchao.quantization import quantize_, int8_dynamic_activation_int8_weight
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print("- Successfully imported TorchAO")
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# Load model normally first
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# set default to half
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import torch
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torch.set_default_dtype(torch.bfloat16)
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model = AutoModel.from_pretrained(
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self.config.model_path,
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device_map="auto"
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)
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print("- Model loaded in full precision")
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print(f"- Model type: {type(model)}")
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# Apply quantization - call the function to get the config, then apply it
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# quantize_(model, int8_dynamic_activation_int8_weight())
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# from torchao.quantization import quantize_, Int8DynamicActivationInt8WeightConfig,int8_dynamic_activation_int8_semi_sparse_weight,int4_weight_only,Int8DynActInt4WeightGPTQQuantizer,int8_dynamic_activation_int4_weight,Int8DynamicActivationInt4WeightConfig,Int4DynamicActivationInt4WeightConfig
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from torchao.quantization import quantize_, Int8DynamicActivationInt8WeightConfig
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quantize_(model, Int8DynamicActivationInt8WeightConfig())
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print("- Model successfully quantized with int8 weights and int8 activations")
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# add torch compile
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model = torch.compile(model)
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# For older PyTorch versions that have issues with tensor subclasses
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from torchao.utils import unwrap_tensor_subclass
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import torch
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if hasattr(torch, '_version') and not torch.version >= "2.5.0":
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print("- Unwrapping tensor subclasses for compatibility with older PyTorch")
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unwrap_tensor_subclass(model)
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# Apply optimizations
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if torch.version.cuda and float(torch.version.cuda[:3]) >= 11.6:
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if hasattr(torch.nn.functional, 'scaled_dot_product_attention'):
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print("- Using PyTorch SDPA (scaled_dot_product_attention)")
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else:
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print("- PyTorch SDPA not available")
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# Set to eval mode
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model.eval()
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print("- Model set to eval mode")
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# For better performance with int8 dynamic quantization
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torch._inductor.config.force_fuse_int_mm_with_mul = True
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print("- Enabled fusion of int matmul with mul operations")
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else:
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# Standard loading for FP16/FP32
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model = AutoModel.from_pretrained(self.config.model_path)
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print("- Model loaded in standard precision")
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print(f"- Model type: {type(model)}")
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# Apply standard optimizations
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# set default to half
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import torch
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torch.set_default_dtype(torch.bfloat16)
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model = ModelOptimizer.optimize(model, self.config)
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model = model.half()
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# add torch compile
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model = torch.compile(model)
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# Final check to ensure model is not None
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if model is None:
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raise ValueError("Model is None after optimization")
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print(f"- Final model type: {type(model)}")
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return model
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except Exception as e:
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print(f"ERROR loading model: {str(e)}")
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import traceback
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traceback.print_exc()
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raise
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def _create_random_batch(self, batch_size: int) -> torch.Tensor:
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return torch.randint(
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0, 1000,
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(batch_size, self.config.seq_length),
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device="cuda",
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dtype=torch.long
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)
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def _run_inference(
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self,
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input_ids: torch.Tensor,
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cuda_graph_wrapper: Optional[CUDAGraphWrapper] = None
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) -> Tuple[float, torch.Tensor]:
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attention_mask = torch.ones_like(input_ids)
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with torch.no_grad(), self.timer.timing():
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if cuda_graph_wrapper is not None:
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output = cuda_graph_wrapper(input_ids, attention_mask)
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else:
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output = self.model(input_ids=input_ids, attention_mask=attention_mask)
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return self.timer.elapsed_time(), output
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def run(self) -> Dict[int, Dict[str, float]]:
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results = {}
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# Reset peak memory stats
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torch.cuda.reset_peak_memory_stats()
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for batch_size in self.config.batch_sizes:
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print(f"\nTesting batch size: {batch_size}")
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times = []
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# Get or create CUDA graph for this batch size
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cuda_graph_wrapper = (
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self.cuda_graphs.get_or_create(batch_size)
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if self.cuda_graphs is not None
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else None
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)
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# Pre-allocate input tensor
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input_ids = self._create_random_batch(batch_size)
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print(f"Input shape: {input_ids.shape}")
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# Run benchmark
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for i in tqdm(range(self.config.num_runs), desc=f"Batch size {batch_size}"):
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try:
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elapsed_time, output = self._run_inference(input_ids, cuda_graph_wrapper)
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if i == 0: # Only print on first run
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print(f"Output shape: {output.last_hidden_state.shape}")
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times.append(elapsed_time)
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except Exception as e:
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print(f"Error during inference: {e}")
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break
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if not times:
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print(f"No successful runs for batch size {batch_size}, skipping")
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continue
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# Calculate statistics
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avg_time = np.mean(times)
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std_time = np.std(times)
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throughput = batch_size / avg_time
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results[batch_size] = {
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"avg_time": avg_time,
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"std_time": std_time,
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"throughput": throughput,
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}
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print(f"Avg Time: {avg_time:.4f}s ± {std_time:.4f}s")
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print(f"Throughput: {throughput:.2f} sequences/second")
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# Log memory usage
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peak_memory_gb = torch.cuda.max_memory_allocated() / (1024 ** 3)
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print(f"\nPeak GPU memory usage: {peak_memory_gb:.2f} GB")
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# Add memory info to results
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for batch_size in results:
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results[batch_size]["peak_memory_gb"] = peak_memory_gb
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return results
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def main():
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parser = argparse.ArgumentParser(description="Model Inference Benchmark")
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parser.add_argument(
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"--model_path",
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type=str,
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default="facebook/contriever",
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help="Path to the model",
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)
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parser.add_argument(
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"--batch_sizes",
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type=str,
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default="1,2,4,8,10,16,20,32,40,64,128,256,512,1024,2048,4096,8192",
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help="Comma-separated list of batch sizes",
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)
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parser.add_argument(
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"--seq_length",
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type=int,
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default=256,
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help="Sequence length for input",
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)
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parser.add_argument(
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"--num_runs",
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type=int,
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default=5,
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help="Number of runs for each batch size",
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)
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parser.add_argument(
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"--use_fp16",
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action="store_true",
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help="Enable FP16 inference",
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)
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parser.add_argument(
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"--use_int4",
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action="store_true",
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help="Enable INT4 quantization using bitsandbytes",
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)
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parser.add_argument(
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"--use_int8",
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action="store_true",
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help="Enable INT8 quantization for both activations and weights using bitsandbytes",
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)
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parser.add_argument(
|
||
"--use_cuda_graphs",
|
||
action="store_true",
|
||
help="Enable CUDA Graphs optimization",
|
||
)
|
||
parser.add_argument(
|
||
"--use_flash_attention",
|
||
action="store_true",
|
||
help="Enable Flash Attention 2 if available",
|
||
)
|
||
parser.add_argument(
|
||
"--use_linear8bitlt",
|
||
action="store_true",
|
||
help="Enable Linear8bitLt quantization for all linear layers",
|
||
)
|
||
|
||
args = parser.parse_args()
|
||
|
||
# Print arguments for debugging
|
||
print("\nCommand line arguments:")
|
||
for arg, value in vars(args).items():
|
||
print(f"- {arg}: {value}")
|
||
|
||
config = BenchmarkConfig(
|
||
model_path=args.model_path,
|
||
batch_sizes=[int(bs) for bs in args.batch_sizes.split(",")],
|
||
seq_length=args.seq_length,
|
||
num_runs=args.num_runs,
|
||
use_fp16=args.use_fp16,
|
||
use_int4=args.use_int4,
|
||
use_int8=args.use_int8, # Add this line
|
||
use_cuda_graphs=args.use_cuda_graphs,
|
||
use_flash_attention=args.use_flash_attention,
|
||
use_linear8bitlt=args.use_linear8bitlt,
|
||
)
|
||
|
||
# Print configuration for debugging
|
||
print("\nBenchmark configuration:")
|
||
for field, value in vars(config).items():
|
||
print(f"- {field}: {value}")
|
||
|
||
try:
|
||
benchmark = Benchmark(config)
|
||
results = benchmark.run()
|
||
|
||
# Save results to file
|
||
import json
|
||
import os
|
||
|
||
# Create results directory if it doesn't exist
|
||
os.makedirs("results", exist_ok=True)
|
||
|
||
# Generate filename based on configuration
|
||
precision_type = "int4" if config.use_int4 else "fp16" if config.use_fp16 else "fp32"
|
||
model_name = os.path.basename(config.model_path)
|
||
output_file = f"results/benchmark_{model_name}_{precision_type}.json"
|
||
|
||
# Save results
|
||
with open(output_file, "w") as f:
|
||
json.dump(
|
||
{
|
||
"config": {k: str(v) if isinstance(v, list) else v for k, v in vars(config).items()},
|
||
"results": {str(k): v for k, v in results.items()}
|
||
},
|
||
f,
|
||
indent=2
|
||
)
|
||
print(f"Results saved to {output_file}")
|
||
|
||
except Exception as e:
|
||
print(f"Benchmark failed: {e}")
|
||
import traceback
|
||
traceback.print_exc()
|
||
|
||
|
||
if __name__ == "__main__":
|
||
main() |