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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SYSTEMML-1904) More aggressive dynamic recompilation w/ codegen
Date Fri, 27 Oct 2017 04:58:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-1904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm closed SYSTEMML-1904.
------------------------------------
    Resolution: Done
      Assignee: Matthias Boehm

> More aggressive dynamic recompilation w/ codegen
> ------------------------------------------------
>
>                 Key: SYSTEMML-1904
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1904
>             Project: SystemML
>          Issue Type: Sub-task
>          Components: Compiler, Runtime
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> This task aims to improve scenarios where we currently disable - despite unknown dimensions
- dynamic recompilation too eagerly due to good worst-case estimates, which hurts performance
in case of codegen. This is because the cost-based codegen optimizer requires sizes for validity
conditions and cost estimates.
> Accordingly, if codegen is enabled, we flag operations as requires recompile in case
of unknown dimensions even if we were able to compile these operations to CP.



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