如何计算模型的FLOPs

pip install thop

先配置环境,如上。

    from torchvision.models import resnet50
    from thop import profile
    model = resnet50()
    input = torch.randn(1, 3, 224, 224)
    flops, params = profile(model, inputs=(input, ))
    print('flops:', flops)
    print('params:', params)

输入的batch,channel以及大小不同,打印出来的flops也不同,个人猜测论文里呈现的都是对一张Image的flops,若有不对希望可以得到更正。打印出来的结果是下面酱婶儿的:

Register FLOP counter for module Conv2d(3, 64, kernel_size=(7, 7), stride=(2, 2), padding=(3, 3), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module MaxPool2d(kernel_size=3, stride=2, padding=1, dilation=1, ceil_mode=False)
Register FLOP counter for module Conv2d(64, 64, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(64, 64, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(64, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(64, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 64, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(64, 64, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(64, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(256, 64, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(64, 64, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(64, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(64, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(256, 128, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 128, kernel_size=(3, 3), stride=(2, 2), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(256, 512, kernel_size=(1, 1), stride=(2, 2), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 128, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 128, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(512, 128, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 128, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(512, 128, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 128, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(128, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(128, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(512, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 256, kernel_size=(3, 3), stride=(2, 2), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 1024, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(512, 1024, kernel_size=(1, 1), stride=(2, 2), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(1024, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 1024, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(1024, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 1024, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(1024, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 1024, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(1024, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 1024, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(1024, 256, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(256, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(256, 1024, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(1024, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(1024, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 512, kernel_size=(3, 3), stride=(2, 2), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 2048, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(2048, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(1024, 2048, kernel_size=(1, 1), stride=(2, 2), bias=False)
Register FLOP counter for module BatchNorm2d(2048, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(2048, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 2048, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(2048, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module Conv2d(2048, 512, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(512, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module Conv2d(512, 2048, kernel_size=(1, 1), stride=(1, 1), bias=False)
Register FLOP counter for module BatchNorm2d(2048, eps=1e-05, momentum=0.1, affine=True, track_running_stats=True)
Register FLOP counter for module ReLU(inplace)
Register FLOP counter for module AvgPool2d(kernel_size=7, stride=1, padding=0)
Register FLOP counter for module Linear(in_features=2048, out_features=1000, bias=True)
flops: 4135703552.0
params: 25557032.0

 

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