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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SYSTEMML-1885) Slow codegen sparse-safe aggregates over compressed data
Date Fri, 08 Sep 2017 19:32:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-1885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm resolved SYSTEMML-1885.
--------------------------------------
       Resolution: Fixed
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 0.15

> Slow codegen sparse-safe aggregates over compressed data
> --------------------------------------------------------
>
>                 Key: SYSTEMML-1885
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1885
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 0.15
>
>
> The codegen cell template does not yet exploit the ability to perform sparse-safe unary
operations purely over the value tuples of compressed matrices, which leads to significant
slowdowns of orders of magnitude.



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