Using batch norm makes training faster

1

When i do not use the batch norm, the training time is slower than when i use. (2~3 times slower)
I wrote the code to print the log every 10 iterations.
In tranining phase, the speed of printing the log is much faster when using the batch norm.
Is this normal?

Thanks.

2

Solved. I made a mistake. It is a bit slower when using batch norm.