OSError: [Errno 12] Cannot allocate memory

[buscon]

hi,

I have been trying to train with my own dataset of sounds, about 9gb of short wav files.
The preprocess works without problem, but when I run train.py I get this error:

Traceback (most recent call last):
File "train.py", line 180, in
train_fn(args)
File "train.py", line 132, in train_fn
for i, data in enumerate(dataloader, 0):
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 819, in iter
return _DataLoaderIter(self)
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 560, in init
w.start()
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/multiprocessing/process.py", line 105, in start
self._popen = self._Popen(self)
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/multiprocessing/context.py", line 223, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/multiprocessing/context.py", line 277, in _Popen
return Popen(process_obj)
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/multiprocessing/popen_fork.py", line 19, in init
self._launch(process_obj)
File "/home/ubuntu/anaconda3/envs/tensorflow_p36/lib/python3.6/multiprocessing/popen_fork.py", line 66, in _launch
self.pid = os.fork()
OSError: [Errno 12] Cannot allocate memory