roywei edited a comment on issue #15640: Performance regression for MXNet 1.5.0 URL: https://github.com/apache/incubator-mxnet/issues/15640#issuecomment-514344026 Hi @QueensGambit, thanks for your detailed reply. Very cool project! There was a lengthy discussion about operator performance regression here: https://github.com/apache/incubator-mxnet/issues/15429#issuecomment-508831150 It's still open as we need more comprehensive method to evaluate operator performance, and there could be regressions we didn't detect. Summary is: 1. The profiler code changed between 1.4.1 and 1.5.0, so it's not an apple to apple comparison. (same untouched operators became slow due to profiler change) 2. Using `time` module, we didn't see significant regression on `batchnorm` and `broadcast add`, 1-3% at most and givent the variance between runs, we decided to go with the release. Relu activation slow is expected for correctness. 3. We can look into `convlution` you mentioned. Also if the `cp` `nodes` `depths` values are different, does it mean the time will be different?
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