wkcn commented on issue #14610: [Feature Request] Disable lazy evaluation URL: https://github.com/apache/incubator-mxnet/issues/14610#issuecomment-480110594 Test Code: ``` import mxnet as mx import time N = 4000 a = mx.nd.zeros((N, N)) b = mx.nd.zeros((N, N)) while 1: tic = time.time() c = mx.nd.dot(a, b) time.sleep(5) tic2 = time.time() c.wait_to_read() print("wait_to_read", time.time() - tic2) print(time.time() - tic) ``` Engine|calling `time.sleep(5)`|wait_to_read time|total time| ----------|----|----|---- ThreadedEnginePerDevice|Yes|4e-5|5.01 ThreadedEnginePerDevice|No|0.705|0.708 NaiveEngine|Yes|4e-5|5.7 NaiveEngine|No|5.96e-6|0.68
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