Laurawly commented on pull request #6108:
URL: https://github.com/apache/incubator-tvm/pull/6108#issuecomment-663936994


   I'm wondering what's the purpose of this PR. Currently, there's no 
correctness issue with `get_valid_counts` and `nms` in end-to-end performance 
of object detection related models using them. And based on the benchmarks 
shown in this [PR](https://github.com/apache/incubator-tvm/pull/5339), there's 
a lot of performance gain on recent changes. And as a summarization of that PR, 
we know data rearrangement on the GPU is super slow.


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