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https://github.com/This-weiyuqing/ECG_by_Diffenert_CNN_Test.git
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load two layer of cnn
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import tensorflow as tf
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tf.test.is_gpu_available()
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# Tensorflow 2.10是最后一个在本地windows上支持GPU的版本。从2.11版本开始,需要在windows WLS2(适用于 Linux 的 Windows 子系统)上安装才能使用GPU。所以要在native-windows上使用GPU,就只能安装2.10.0版本及以下的版本,或者安装老版的tensorflow-gpu.
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# 指定在cpu上运行
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with tf.device('/cpu:0'):
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cpu_a = tf.random.normal([10000, 1000])
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cpu_b = tf.random.normal([1000, 2000])
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cpu_c = tf.matmul(cpu_a, cpu_b)
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print("cpu_a:", cpu_a.device)
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print("cpu_b:", cpu_b.device)
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print("cpu_c:", cpu_c.device)
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# 查看gpu是否可用
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print(tf.config.list_physical_devices('GPU'))
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# 指定在gpu上运行
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with tf.device('/gpu:0'):
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gpu_a = tf.random.normal([10000, 1000])
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gpu_b = tf.random.normal([1000, 2000])
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gpu_c = tf.matmul(gpu_a, gpu_b)
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print("gpu_a:", gpu_a.device)
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print("gpu_b:", gpu_b.device)
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print("gpu_c:", gpu_c.device)
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import tensorflow as tf
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import timeit
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def cpu_run():
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with tf.device('/cpu:0'):
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cpu_a = tf.random.normal([10000, 1000])
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cpu_b = tf.random.normal([1000, 2000])
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c = tf.matmul(cpu_a, cpu_b)
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return c
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def gpu_run():
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with tf.device('/gpu:0'):
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gpu_a = tf.random.normal([10000, 1000])
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gpu_b = tf.random.normal([1000, 2000])
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c = tf.matmul(gpu_a, gpu_b)
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return c
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cpu_time = timeit.timeit(cpu_run, number=10)
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gpu_time = timeit.timeit(gpu_run, number=10)
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print("cpu:", cpu_time, " gpu:", gpu_time)
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# 检测 tensorflow 能使用的设备情况
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from tensorflow.python.client import device_lib
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# os.environ["CUDA_VISIBLE_DEVICES"] = "1" # 这个可以指定使用哪个设备
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print(device_lib.list_local_devices())
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