Range subprocess failed(exit code : 2)

[mathpopo]

hi ~ i have a issue, could you help me ? i run the commond in the README.md

'''''bash python launch.py \ --cfg configs/video/2d_best/01_R101_best_hungarian-4GPU.yaml \ --mode test\ TEST.WEIGHTS pretrained models/configs/video/2d_best/01_R101_best_hungarian-4GPU.yaml/model_final.pkl ''''''' but it has the log......, i am using linux ubuntu16.04, and have 4 GPU (TITAN XP 11G)

***** it is log ** tools/test_net.py: 10: tools/test_net.py: Test a Fafst R-CNN network on an image database: not found from: cannt read /var/mail/future

from: cannt read /var/mail/caffe2.python tool/test_net.py:21: tools/test_net.py:syntax error;"(" unexpected

Traceback(most recennt call last); File "tools/test_net.py", line 143, in main(ind_rang=args.range, multi_gpu_testing=args.multi_gpu_testing) File "tools/test_net.py", line 104, in main engine.test_net_on_dataset(multi_gpu=multi_gpu_testing) File "data/DetectAndTrack/lib/core/test_engine.py", line 319, in test_net_on_dataset num_images, output_dir) File "data/DetectAndTrack/lib/core/test_engine.py", line 284, in multi_gpu_test_net_on_dataset 'detection' , num_images, binary, output_dir File "data/DetectAndTrack/lib/utils/subprocess.py", line 67, in process_in_parallel log_subprocess_output(i, p, output_dir, tag, start, end) File "data/DetectAndTrack/lib/utils/subprocess.py", line 97, in log_subprocess_output assert ret == 0, 'Range subprocess failed (exit code: {})'.format(ret) AssertionError:Range subprocess failed(exit code : 2)

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[mathpopo]

use command like below,all is right. python launch.py --cfg configs/video/2d_best/01_R101_best_hungarian-4GPU.yaml --mode track ......

[ezreal1129]

@mathpopo can you fixed it?

[mathpopo]

@ezreal1129 sorry,not deal with it,if you have any idea,plz tell me,thanks!

[my-hello-world]

@mathpopo @ezreal1129 python launch.py -c configs/video/2d_best/01_R101_best_hungarian-4GPU.yaml -m test USE_NCCL True

The error disappeared ,This will require Caffe2 to have been built with nccl ops