[GitHub] wkcn commented on issue #9939: [MXNET-40]add multi proposal operator (cpu version) and fix the bug in proposal op (gpu version)

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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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