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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SYSTEMML-1538) Improved dynamic recompilation (size update after rewrites)
Date Wed, 12 Jul 2017 23:17:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-1538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm closed SYSTEMML-1538.
------------------------------------

> Improved dynamic recompilation (size update after rewrites)
> -----------------------------------------------------------
>
>                 Key: SYSTEMML-1538
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1538
>             Project: SystemML
>          Issue Type: Sub-task
>          Components: Compiler
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> Dynamic recompilation currently first updates matrix characteristics and subsequently
applied dynamic rewrites and operator selection which depend on the updates stats. However,
there are various scenarios where applied rewrites simplify the propagation of statistics.
Hence, we should additionally update statistics after rewrites in order to increase the potential
of subsequent operator selection and code generation.



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