以下是我的代码,请问运行后为何会出现DataLoader worker (pid(s) 28432, 17060, 10920, 24856) exited unexpectedly的错误,该如何修改呢?是否和我的电脑硬件是cpu的配置有关?
import time
import torch
from torch import nn,optim
import torchvision
import sys
sys.path.append("C:/Users/zyx20/Desktop/深度学习编程/pythonProject")
import d2lzh_pytorch as d2l
device=torch.device('cuda' if torch.cuda.is_available() else 'cpu')
class Alexnet(nn.Module):
def __init__(self):
super(Alexnet,self).__init__()
self.conv=nn.Sequential(nn.Conv2d(1,96,11,4),
nn.ReLU(),
nn.MaxPool2d(3,2),
nn.Conv2d(96,256,5,1,2),
nn.ReLU(),
nn.MaxPool2d(3,2))
self.fc=nn.Sequential(
nn.Linear(256*5*5,4096),
nn.ReLU(),
nn.Dropout(),
nn.Linear(4096,4096),
nn.ReLU(),
nn.Dropout(),
nn.Linear(4096,10)
)
def forward(self,img):
feature=self.conv(img)
output=self.fc(feature.view(img.shape[0],-1))
return output
net=Alexnet()
def load_data_fashion_mnist(batch_size,resize=None,root='C:/Users/zyx20/Desktop/深度学习编程/MNIST/raw'):
#Download the fashion minst dataset and then load into memory#
trans=[]
if resize:
trans.append(torchvision.transforms.Resize(size=resize))
trans.append(torchvision.transforms.ToTensor())
transform=torchvision.transforms.Compose(trans)
mnist_train = torchvision.datasets.FashionMNIST(root=root, train=True,download=True, transform=transform)
mnist_test = torchvision.datasets.FashionMNIST(root=root, train=False,download=True, transform=transform)
train_iter = torch.utils.data.DataLoader(mnist_train, batch_size=batch_size, shuffle=True, num_workers=4)
test_iter = torch.utils.data.DataLoader(mnist_test, batch_size=batch_size, shuffle=False, num_workers=4)
return train_iter,test_iter
batch_size=128
train_iter,test_iter=load_data_fashion_mnist(batch_size,resize=124)
#训练
lr,num_epochs=0.001,5
optimizer=torch.optim.Adam(net.parameters(),lr=lr)
d2l.train_ch5(net,train_iter,test_iter,num_epochs,batch_size,optimizer,device,num_epochs)