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  • Win10 pycharm中显示PyTorch tensorboard图

    import numpy
    import numpy as np
    import torch
    import matplotlib.pyplot as plt
    import torch.nn as nn
    import torch.nn.functional as F
    import torch.optim as optim
    
    import torchvision
    import torchvision.transforms as transforms
    import tensorboard
    from torch.utils.tensorboard import SummaryWriter
    
    # print(tensorboard.__version__)
    
    
    device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
    
    # Assuming that we are on a CUDA machine, this should print a CUDA device:
    
    # print(device)
    
    '''
    device="cuda" if torch.cuda.is_available() else "cpu"
    # print(device)
    '''
    torch.set_printoptions(linewidth=120)  # Display options for output
    torch.set_grad_enabled(True)  # Already on by default
    print(torch.__version__, torchvision.__version__, sep='
    ')
    
    def get_num_correct(preds, labels):
        return preds.argmax(dim=1).eq(labels).sum().item()
    
    class Network(nn.Module):
        def __init__(self):
            super().__init__()
            self.conv1 = nn.Conv2d(in_channels=1, out_channels=6, kernel_size=5)
            self.conv2 = nn.Conv2d(in_channels=6, out_channels=12, kernel_size=5)
    
            self.fc1 = nn.Linear(in_features=12 * 4 * 4, out_features=120)
            self.fc2 = nn.Linear(in_features=120, out_features=60)
            self.out = nn.Linear(in_features=60, out_features=10)
    
        def forward(self, t):
            # (1) input layer
            t = t
    
            # (2) hidden conv layer
            t = self.conv1(t)
            t = F.relu(t)
            t = F.max_pool2d(t, kernel_size=2, stride=2)
    
            # (3) hidden conv layer
            t = self.conv2(t)
            t = F.relu(t)
            t = F.max_pool2d(t, kernel_size=2, stride=2)
    
            # (4) hidden Linear layer
            t = t.reshape(-1, 12 * 4 * 4)  # -1表示对行没约束,反正是12*4*4列
            t = self.fc1(t)
            t = F.relu(t)
            # (5) hidden Linear layer
            t = self.fc2(t)
            t = F.relu(t)
            # (6) output layer
            t = self.out(t)
            # t=F.softmax(t,dim=1) #此处不使用softmax函数,因为在训练中我们使用了交叉熵损失函数,而在torch.nn函数类中,已经在其输入中隐式的
            # 执行了一个softmax操作,这里我们只返回最后一个线性变换的结果,也即是 return t,也即意味着我们的网络将使用softmax操作进行训练,但在
            # 训练完成后,将不需要额外的计算操纵。
    
            return t
    
    # get data
    
    train_set = torchvision.datasets.FashionMNIST(
        root='./data/FashionMNIST',
        train=True,
        download=True,
        transform=transforms.Compose([transforms.ToTensor()])
    )
    
    
    
    
    data_loader = torch.utils.data.DataLoader(train_set,batch_size=100,shuffle=True)  # shuffle=True
    
    # from collections import Iterable
    #
    # print(isinstance(data_loader,Iterable)) #返回True
    
    #####################
    # starting out with TensorBoard(Network Graph and Images) 下面一段为生成日志文件的代码,直到tb.close()
    #####################
    tb=SummaryWriter() 
    
    network=Network()
    images,labels=next(iter(data_loader))
    grid=torchvision.utils.make_grid(images)#网格效用函数
    
    tb.add_image('images',grid)
    tb.add_graph(network,images)
    tb.close()
    
    # optimizer = optim.Adam(network.parameters(), lr=0.01)
    
    '''
    
    for epoch in range(3):
    
        total_loss = 0
        total_correct = 0
    
        for batch in data_loader:  # get batch
            images, labels = batch
            images, labels = images.to(device), labels.to(device)
    
            preds = network(images)  # pass batch
            loss = F.cross_entropy(preds, labels)  # calculate loss
    
            optimizer.zero_grad()
            loss.backward()  # calculate gradients
            optimizer.step()  # update weights  using the gradient and the learning rate
            total_loss += loss.item()
            total_correct += get_num_correct(preds, labels)
    
        print('epoch:', epoch, 'total_correct:', total_correct, 'total_loss:', total_loss)
    
    print(total_correct / len(train_set))
    
    '''
    

    其中 runs为该代码所在文件夹中位置,日志文件生成后也在这个文件夹里
    如下图:

    在runs文件夹上点击鼠标右键 有一个open in terminal 点击

    打开后如下图所示:

     然后再再上图红框右边输入:tensorboard --logdir=日志文件所在的绝对路径
    日志文件绝对路径可以直接在runs文件夹右击 有一个copy path 即可
    回车后出现一个网址,点击就可以看到tensorboard图:

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  • 原文地址:https://www.cnblogs.com/Li-JT/p/15168086.html
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