测试TensorFlow/PyTorch的GPU版本是否启用

后续遇到好的会不断更新。。。

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1. Pytorch测试代码

import torch
def gpu_is_available():
    print('\nGPU details:')
    print(f'    gpu_is_available      : ', torch.cuda.is_available())
    print(f'    cuda_device_count     : ', torch.cuda.device_count())
    print(f'    cuda_device_name      : ', torch.cuda.get_device_name())
    print(f'    cuda_device_capability: ', torch.cuda.get_device_capability(0))
gpu_is_available()

来源：“PyTorch快速安装并验证GPU是否可用”

#测试pytorch-gpu是否能用
import torch
flag = torch.cuda.is_available()
print(flag)
ngpu= 1
# Decide which device we want to run on
device = torch.device("cuda:0" if (torch.cuda.is_available() and ngpu > 0) else "cpu")
print('cuda设备名：',device)
print('gpu名称：',torch.cuda.get_device_name(0))
print('pytorch版本：',torch.__version__)
print('cuda版本：',torch.version.cuda)
print('cudnn版本号：',torch.backends.cudnn.version())
print('定义一个torch格式的3*3的矩阵：',torch.rand(3,3).cuda())

来源：“如何测试pytorch-gpu版本和tensorflow-gpu版本是否安装成功”

import torch
# 使用GPU训练
if not torch.cuda.is_available():
    print('CUDA is not available.  Training on CPU ...')
else:
    print('CUDA is available.  Training on GPU ...')
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")

来源：“深入学习之anaconda、pytorch、cuda安装”

#coding=gbk
import torch

# 定义张量的形状和大小
shape = (100, 1000)
num_tensors = 50000

device = torch.device('cuda:0' if torch.cuda.is_available() else 'cpu')
data = [torch.rand(shape, device=device) for _ in range(num_tensors)]

total_sum = torch.tensor([0.0])
for tensor in data:
    total_sum += tensor.sum().cpu()

print('Total sum:', total_sum.item())

来源：“测试pytorch-gpu”

2. TensorFlow测试代码

#测试tensorflow-gpu是否能用
import tensorflow as tf
print('\n\nGPU',tf.config.list_physical_devices('GPU'))
a = tf.constant(2.)
b = tf.constant(4.)
print('打印a*b：',a * b)
print("tensorflow版本:", tf.__version__)

来源：“如何测试pytorch-gpu版本和tensorflow-gpu版本是否安装成功”

import tensorflow as tf
print(tf.test.is_gpu_available())

来源：“检测安装Tensorflow后是否成功调用GPU”