Files
insightface/detection/scrfd/tools/get_flops.py
2021-05-12 11:40:54 +08:00

76 lines
2.2 KiB
Python
Executable File

import argparse
import torch
from mmcv import Config
from mmdet.models import build_detector
try:
from mmcv.cnn import get_model_complexity_info
except ImportError:
raise ImportError('Please upgrade mmcv to >0.6.2')
def parse_args():
parser = argparse.ArgumentParser(description='Train a detector')
parser.add_argument('config', help='train config file path')
parser.add_argument(
'--shape',
type=int,
nargs='+',
#default=[1280, 800],
default=[640, 640],
help='input image size')
args = parser.parse_args()
return args
def main():
args = parse_args()
if len(args.shape) == 1:
input_shape = (3, args.shape[0], args.shape[0])
elif len(args.shape) == 2:
input_shape = (3, ) + tuple(args.shape)
else:
raise ValueError('invalid input shape')
cfg = Config.fromfile(args.config)
# import modules from string list.
if cfg.get('custom_imports', None):
from mmcv.utils import import_modules_from_strings
import_modules_from_strings(**cfg['custom_imports'])
model = build_detector(
cfg.model, train_cfg=cfg.train_cfg, test_cfg=cfg.test_cfg)
if torch.cuda.is_available():
model.cuda()
model.eval()
#print(model.bbox_head)
if hasattr(model, 'forward_dummy'):
model.forward = model.forward_dummy
else:
raise NotImplementedError(
'FLOPs counter is currently not currently supported with {}'.
format(model.__class__.__name__))
#flops, params = get_model_complexity_info(model, input_shape)
flops, params = get_model_complexity_info(model, input_shape, print_per_layer_stat=True, as_strings=False)
flops += model.bbox_head.extra_flops
flops *= 0.75
split_line = '=' * 30
print('ON VGA:')
print(flops/1e9, 'G')
print(params/1e6, 'M')
#print(f'{split_line}\nInput shape: {input_shape}\n'
# f'Flops: {flops}\nParams: {params}\n{split_line}')
#print('!!!Please be cautious if you use the results in papers. '
# 'You may need to check if all ops are supported and verify that the '
# 'flops computation is correct.')
if __name__ == '__main__':
main()