ThomasDelteil commented on issue #10508: MXNet much slower than TensorFlow
   You have an error in your tensorflow code @altosaar 
   You are setting  `t0 = time.time()` right before computing: `(time.time() - 
   Hence the number through the roof for tensorflow (0.5M iter/sec on CPU 
should have startled you 😄 )
   After fixing that, using your benchmark and rewriting the metrics, MXNet is 
twice faster 🎉 :
   Iter 11000   ELBO: -102.9     Examples/s: 24981.99
   Iter 12000   ELBO: -104.8     Examples/s: 26717.71
   Iteration: 10000 ELBO: -96.456 Examples/s: 10878.597
   Iteration: 11000 ELBO: -103.466 Examples/s: 10898.741

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