weird time consuming of FCOS head when changing the backbone

tianzhi0549 / FCOS

FCOS: Fully Convolutional One-Stage Object Detection (ICCV'19)

https://arxiv.org/abs/1904.01355

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Open goldentimecoolk opened 1 year ago

goldentimecoolk commented 1 year ago

Hi, I want to test the FPS of FCOS with different backbones. But I found the results below is weird.

backbone               time consuming of backbone+neck+head
Resnext101-64x4d 35+2+120
R50                        15+2.5+48

My question is that why the time of FCOS head would change a lot with different backbones, as the structure of FCOS head do not change?