Apex Trainer Example

Install Apex

• apex: pip install -v --no-cache-dir --global-option="--cpp_ext" --global-option="--cuda_ext" --upgrade 'git+https://github.com/NVIDIA/apex'

Results:

Trained with 2080Ti

faster rcnn

lr sched 1x

Name	train time(s/iter)	infer time(s/im)	train mem(GB)	box AP
R50-FPN-V100	0.210	0.055	3.0	37.9
R50-FPN	0.312	0.056	2.893	37.9
R50-FPN-Apex	0.322	0.053	2.793	38.0

RetineNet

lr sched 1x

Name	train time(s/iter)	infer time(s/im)	train mem(GB)	box AP
R50-V100	0.200	0.062	3.9	36.5
R50	0.285	0.079	3.934	36.5
R50-Apex	0.248	0.067	3.275	36.4

Mask R-CNN

lr sched 1x

Name	train time(s/iter)	infer time(s/im)	train mem(GB)	box AP	mask AP
R50-V100	0.261	0.053	3.4	38.6	35.2
R50-FPN	0.348	0.063	3.44	38.5	35.1
R50-FPN-Apex	0.363	0.061	3.26	38.6	35.2