GPU版TensorFlowの正常なインストールをテストします。

手順は以下の通りです。

import tensorflow as tf

print('GPU',tf.test.is_gpu_available())

a = tf.constant(2.)
b = tf.constant(4.)

print(a * b)

結果を実行します。

D:\python\python.exe E:/pycharm_project2019/forward/test_gpu.py
2019-09-21 18:03:09.167168: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cudart64_ 100.dll
2019-09-21 18:03:12.435151: I tensorflow/core/platform/cpu_feature_guard.cc:142] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2
2019-09-21 18:03:12.439660: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library nvcuda.dll
2019-09-21 18:03:12.809533: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1618] Found device 0 with properties: 
name: GeForce 940M major: 5 minor: 0 memoryClockRate(GHz): 0.98
pciBusID: 0000:04:00.0
2019-09-21 18:03:12.809793: I tensorflow/stream_executor/platform/default/dlopen_checker_stub.cc:25] GPU libraries are statically linked, skip dlopen check.
2019-09-21 18:03:12.814170: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1746] Adding visible gpu devices: 0
2019-09-21 18:03:24.691808: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1159] Device interconnect StreamExecutor with strength 1 edge matrix:
2019-09-21 18:03:24.692136: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1165] 0 
2019-09-21 18:03:24.692327: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1178] 0: N 
2019-09-21 18:03:24.785375: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1304] Created TensorFlow device (/device:GPU:0 with 514 MB memory) -> physical GPU (device: 0, name: GeForce 940M, pci bus id: 0000:04:00.0, compute capability: 5.0)
GPU True
2019-09-21 18:03:24.909917: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1618] Found device 0 with properties: 
name: GeForce 940M major: 5 minor: 0 memoryClockRate(GHz): 0.98
pciBusID: 0000:04:00.0
2019-09-21 18:03:24.910666: I tensorflow/stream_executor/platform/default/dlopen_checker_stub.cc:25] GPU libraries are statically linked, skip dlopen check.
2019-09-21 18:03:24.927035: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1746] Adding visible gpu devices: 0
2019-09-21 18:03:24.963911: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1618] Found device 0 with properties: 
name: GeForce 940M major: 5 minor: 0 memoryClockRate(GHz): 0.98
pciBusID: 0000:04:00.0
2019-09-21 18:03:24.964226: I tensorflow/stream_executor/platform/default/dlopen_checker_stub.cc:25] GPU libraries are statically linked, skip dlopen check.
2019-09-21 18:03:24.968809: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1746] Adding visible gpu devices: 0
2019-09-21 18:03:24.969307: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1159] Device interconnect StreamExecutor with strength 1 edge matrix:
2019-09-21 18:03:24.969515: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1165] 0 
2019-09-21 18:03:24.969647: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1178] 0: N 
2019-09-21 18:03:24.974380: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1304] Created TensorFlow device (/job:localhost/replica:0/ task:0/device:GPU:0 with 514 MB memory) -> physical GPU (device: 0, name: GeForce 940M, pci bus id: 0000:04:00.0, compute capability: 5.0)
tf.Tensor(8.0, shape=(), dtype=float32)

Process finished with exit code 0

GPU True"を表示します。これは、GPUバージョンが正常にインストールされたことを意味します