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Posted to dev@systemds.apache.org by GitBox <gi...@apache.org> on 2022/03/20 09:36:19 UTC

[GitHub] [systemds] corepointer opened a new pull request #1566: [SYSTEMDS-3334] Code-gen rewrite AGGMAX_ROWMAXS_VECTMULT

corepointer opened a new pull request #1566:
URL: https://github.com/apache/systemds/pull/1566


   This patch adds a rewrite to avoid vector intermediates in the generated row template of connected components by doing the elementwise multiplication, row_maxs and max in one pass.
   
   Works only for a certain small input size. Then other rewrites seem to get to modify the DAG before this pattern can be tested. E.g., tested with 1000 nodes -> works, tested with 100000 nodes -> pattern not applied because DAG is already different.


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