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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2016/08/15 19:12:21 UTC

[jira] [Closed] (SYSTEMML-833) Additional cleanup rewrites

     [ https://issues.apache.org/jira/browse/SYSTEMML-833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Boehm closed SYSTEMML-833.
-----------------------------------

> Additional cleanup rewrites
> ---------------------------
>
>                 Key: SYSTEMML-833
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-833
>             Project: SystemML
>          Issue Type: Bug
>          Components: Compiler
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 0.11
>
>
> The rewritten HOP sometimes contains unnecessary as.matrix/as.scalar cast pairs, reorg operations with 1x1 dimensions (e.g., transpose, reshape), and unnecessary aggregations (e.g., sum over 1x1 matrix). In order to simplify debugging (but not performance relevant), we should add a couple of cleanup rewrites and extend existing rewrites that remove these unnecessary operations.



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