How to processing multi GPU?

[hyeonjinXZ]

Hello,

I'd like to processing with multi GPU. So I set the gpu_id from 0 to 0,1.
GPU_ID: '0,1' in pororo_s1_vlc.yml .
And I used nn.parallel.data_parallel too. (

VLCStoryGan/vlcgan/trainer_vlc.py

Line 310 in 7411240

# nn.parallel.data_parallel(netG.sample_videos, st_inputs, self.gpus)

)
But I got an error: AttributeError: 'DataParallel' object has no attribute 'sample_videos'.

Traceback (most recent call last):
  File "train_vlcgan.py", line 225, in <module>
    PIL.Image.fromarray,
  File "/project/6057220/xianzhen/storygan/vlcgan/trainer_vlc.py", line 353, in train
    lr_st_fake, st_fake, m_mu, m_logvar, c_mu, c_logvar, s_word = netG.sample_videos(*st_inputs)
  File "/home/xianzhen/.local/lib/python3.8/site-packages/torch/nn/modules/module.py", line 1177, in __getattr__
    raise AttributeError("'{}' object has no attribute '{}'".format(
AttributeError: 'DataParallel' object has no attribute 'sample_videos'

1. how to I solve it?
2. Is there any reason you didn't use DistributedDataParallel?