pytorch 多GPU 训练
import os
os.environ['CUDA_VISIBLE_DEVICES'] = '0, 1, 2'
import torch
#注意以上两行先后顺序不可弄错
device = torch.device('cuda')
model = DataParallel(model)
model.to(device)
这样模型就会在gpu 0, 1, 2 上进行训练
import os
os.environ['CUDA_VISIBLE_DEVICES'] = '0, 1, 2'
import torch
#注意以上两行先后顺序不可弄错
device = torch.device('cuda')
model = DataParallel(model)
model.to(device)
这样模型就会在gpu 0, 1, 2 上进行训练