0.引子
在深度学习框架GPU版本安装成功后，需要测试一下是否成功安装。GPU版本不像CPU版本的简单，CPU版本测试一般只需import一下测试是否能正确导入即可。GPU版本还需要测试CUDA或者GPU模块是否能正确调用起来。
下面将介绍笔者常用框架的测试方法，包括TensorFlow，PyTorch，MXNet，PaddlePaddle。如果小伙伴有其他框架测试需求或者经验，欢迎在评论区指出。必要的时候，笔者会及时更新一下的。
1.方法
1.0：TensorFlow
TensorFlow1.x与TensorFlow2.x测试方法是一样的，代码如下：
代码语言：javascript复制import tensorflow as tf
print(tf.test.is_gpu_available())上述代码保存为.py文件，使用需要测试环境即可运行，输出：上面是一下log信息，关键的是的最后True，表示测试成功
代码语言：javascript复制2020-09-28 15:43:03.197710: I tensorflow/core/platform/cpu_feature_guard.cc:142] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2
2020-09-28 15:43:03.204525: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library nvcuda.dll
2020-09-28 15:43:03.232432: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1618] Found device 0 with properties:
name: GeForce RTX 2070 with Max-Q Design major: 7 minor: 5 memoryClockRate(GHz): 1.125
pciBusID: 0000:01:00.0
2020-09-28 15:43:03.235352: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cudart64_100.dll
2020-09-28 15:43:03.242823: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cublas64_100.dll
2020-09-28 15:43:03.261932: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cufft64_100.dll
2020-09-28 15:43:03.268757: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library curand64_100.dll
2020-09-28 15:43:03.297478: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cusolver64_100.dll
2020-09-28 15:43:03.315410: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cusparse64_100.dll
2020-09-28 15:43:03.330562: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cudnn64_7.dll
2020-09-28 15:43:03.332846: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1746] Adding visible gpu devices: 0
2020-09-28 15:43:05.198465: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1159] Device interconnect StreamExecutor with strength 1 edge matrix:
2020-09-28 15:43:05.200423: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1165] 0
2020-09-28 15:43:05.201540: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1178] 0: N
2020-09-28 15:43:05.203863: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1304] Created TensorFlow device (/device:GPU:0 with 6306 MB memory) -> physical GPU (device: 0, name: GeForce RTX 2070 with Max-Q Design, pci bus id: 0000:01:00.0, compute capability: 7.5)
True上面是一下log信息，关键的是的最后True，表示测试成功。其实我们还可以发现很多GPU信息
GPU型号：name: GeForce RTX 2070 with Max-Q Design
cuda版本：Successfully opened dynamic library cudart64_100.dll（10.0）
cudnn版本：Successfully opened dynamic library cudnn64_7.dll（7.x）
GPU数目：Adding visible gpu devices: 0（1）
GPU显存：/device:GPU:0 with 6306 MB memory（8G）
1.1：PyTorch
PyTorch与TensorFlow测试方法类似，都有GPU测试接口。PyTorch的GPU测试代码如下：
代码语言：javascript复制import torch
print(torch.cuda.is_available())上述代码保存为.py文件，使用需要测试环境即可运行，输出：True，表示测试成功
代码语言：javascript复制True可以看出PyTorch输出信息简洁很多。其实TensorFlow的log信息输出也是可以控制的。
1.2：MXNet
MXNet与PyTorch，TensorFlow测试方法不同，由于MXNet'没有GPU测试接口（或者说笔者没有找到）。所以MXNet的GPU测试代码采用try-catch捕捉异常的方法来测试，代码如下：
代码语言：javascript复制import mxnet as mx
mxgpu_ok = False
try:
_ = mx.nd.array(1,ctx=mx.gpu(0))
mxgpu_ok = True
except:
mxgpu_ok = False
print(mxgpu_ok)上述代码保存为.py文件，使用需要测试环境即可运行，输出：True，表示测试成功
1.3：PaddlePaddle
PaddlePaddle与TensorFlow测试方法类似，都有GPU测试接口。PyTorch的GPU测试代码如下：
代码语言：javascript复制import paddle
paddle.fluid.install_check.run_check()上述代码保存为.py文件，使用需要测试环境即可运行，输出：Your Paddle Fluid works well on MUTIPLE GPU or CPU.，表示测试成功
代码语言：javascript复制Running Verify Fluid Program ...
W0928 16:23:17.825171 10572 device_context.cc:252] Please NOTE: device: 0, CUDA Capability: 75, Driver API Version: 11.0, Runtime API Version: 10.0
W0928 16:23:17.836141 10572 device_context.cc:260] device: 0, cuDNN Version: 7.6.
Your Paddle Fluid works well on SINGLE GPU or CPU.
W0928 16:23:19.349067 10572 build_strategy.cc:170] fusion_group is not enabled for Windows/MacOS now, and only effective when running with CUDA GPU.
Your Paddle Fluid works well on MUTIPLE GPU or CPU.
Your Paddle Fluid is installed successfully! Let's start deep Learning with Paddle Fluid now-1.参考
-1.0：https://www.paddlepaddle.org.cn/install/quick#show_info
