Train erro

[gostop112111]

The following error occurred while I was training coco.

Traceback (most recent call last):
  File "/project/yolov3/train.py", line 202, in <module>
    main(opt)
  File "/project/yolov3/train.py", line 132, in main
    loss = model(imgs.to(device), targets, requestPrecision=True)
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/modules/module.py", line 477, in __call__
    result = self.forward(*input, **kwargs)
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/parallel/data_parallel.py", line 123, in forward
    outputs = self.parallel_apply(replicas, inputs, kwargs)
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/parallel/data_parallel.py", line 133, in parallel_apply
    return parallel_apply(replicas, inputs, kwargs, self.device_ids[:len(replicas)])
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/parallel/parallel_apply.py", line 77, in parallel_apply
    raise output
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/parallel/parallel_apply.py", line 53, in _worker
    output = module(*input, **kwargs)
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/modules/module.py", line 477, in __call__
    result = self.forward(*input, **kwargs)
  File "/project/yolov3/models.py", line 238, in forward
    x, *losses = module[0](x, targets, requestPrecision)
  File "/data_b/VirEnv/project/lib/python3.6/site-packages/torch/nn/modules/module.py", line 477, in __call__
    result = self.forward(*input, **kwargs)
  File "/project/yolov3/models.py", line 156, in forward
    requestPrecision)
  File "/project/yolov3/utils/utils.py", line 278, in build_targets
    tmp = pred_cls[b, a, gj, gi]
IndexError: index 8 is out of bounds for dimension 0 with size 8

[glenn-jocher]

Only single-GPU operation is supported currently, see issue #21. Could this be your problem?