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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2017/09/08 19:32:01 UTC

[jira] [Closed] (SYSTEMML-1885) Slow codegen sparse-safe aggregates over compressed data

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

Matthias Boehm closed SYSTEMML-1885.
------------------------------------

> 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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