Dataloader worker is killed about softgroup HOT 7 CLOSED

Exception in thread Thread-283:
Traceback (most recent call last):
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/home/shichen/miniconda3/envs/obj33/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/site-packages/torch/utils/data/_utils/pin_memory.py", line 28, in _pin_memory_loop
    r = in_queue.get(timeout=MP_STATUS_CHECK_INTERVAL)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/queues.py", line 113, in get
    return _ForkingPickler.loads(res)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/site-packages/torch/multiprocessing/reductions.py", line 289, in rebuild_storage_fd
    fd = df.detach()
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/resource_sharer.py", line 57, in detach
    with _resource_sharer.get_connection(self._id) as conn:
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/resource_sharer.py", line 87, in get_connection
    c = Client(address, authkey=process.current_process().authkey)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/connection.py", line 493, in Client
    answer_challenge(c, authkey)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/connection.py", line 732, in answer_challenge
    message = connection.recv_bytes(256)         # reject large message
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/connection.py", line 216, in recv_bytes
    buf = self._recv_bytes(maxlength)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/connection.py", line 407, in _recv_bytes
    buf = self._recv(4)
  File "/home/shichen/miniconda3/envs/obj3d/lib/python3.6/multiprocessing/connection.py", line 379, in _recv
    chunk = read(handle, remaining)
ConnectionResetError: [Errno 104] Connection reset by peer