wkcn commented on issue #9939: [MXNET-40]add multi proposal operator (cpu version) and fix the bug in proposal op (gpu version) URL: https://github.com/apache/incubator-mxnet/pull/9939#issuecomment-370285916 @pengzhao-intel @xinyu-intel Thank you! I will have a try. The performance table name|time (ms) ------|---------- BBoxTransformInv|268 IoUTransformInv|Not used FilterBox|22 CopyScore|18 ReverseArgsort(unstable sort)|7303 ReorderProposals|338 nms(calculate area)|286 nms(calcuate nms)|7547 allocate memory for workspace|1 copy anchor to workspace_proposal|0 enumrate all shifted anchors|9 copy workspace_proposals_base to workspace_proposals|162 assign foreground scores for each anchor|45 prepare output|3 Total|16002 Using stable sort to sort anchors (ReverseArgsort) will increase about 3000 ms. Sorry, it seems that I counted the time of all threads. I will update the performance table.
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