方法1
    
   
    import tensorflow as tf
    
    if tf.test.gpu_device_name():
    
    print(‘Default GPU Device: {}’.format(tf.test.gpu_device_name()))
    
    else:
    
    print(“Please install GPU version of TF”)
   
    
     方法2
    
   
import tensorflow as tf
    tf = tf.Session(config=tf.ConfigProto(log_device_placement=True))
    
    tf.list_devices()
   
    
     方法3
    
   
import tensorflow as tf
tf.test.gpu_device_name()
    
     方法4
    
   
    from tensorflow.python.client import device_lib
    
    device_lib.list_local_devices()
   
 
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