DeepDuke opened a new issue #15624: asnumpy() took a lot of time when 
converting NDARRAY into numpy?
URL: https://github.com/apache/incubator-mxnet/issues/15624
 
 
   I  found a strange thing that when I convert `NDARRAY`  into `numpy` for a 
lot of times,  `asnumpy()`  will took much more time for the first time. When I 
ran on  gpu:
   
   `import mxnet as mx
   from mxnet import nd
   import time
   
   with mx.Context(mx.gpu(0)):
        for i in range(10):
                t1 = time.time()
                a = nd.array([14, 15])
                a = a.asnumpy()
                t2 = time.time()
                print('Time:{:.6f}'.format(t2-t1))`
   
   The result is:
   `Time:1.156998
   Time:0.000000
   Time:0.000997
   Time:0.000000
   Time:0.000998
   Time:0.000000
   Time:0.000000
   Time:0.000000
   Time:0.000000
   Time:0.000998`
   when i ran on cpu , i also get similar result, but it took less time than on 
gpu. I'm quite confusing about this.

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