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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2017/09/12 07:06:00 UTC

[jira] [Updated] (SYSTEMML-1904) More aggressive dynamic recompilation w/ codegen

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

Matthias Boehm updated SYSTEMML-1904:
-------------------------------------
    Fix Version/s:     (was: SystemML 0.14)
                   SystemML 1.0

> 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
>             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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