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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2018/02/24 09:36:00 UTC

[jira] [Closed] (SYSTEMML-2160) Incorporate sparsity in lower bound costs

     [ https://issues.apache.org/jira/browse/SYSTEMML-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Boehm closed SYSTEMML-2160.
------------------------------------
       Resolution: Fixed
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 1.1

> Incorporate sparsity in lower bound costs
> -----------------------------------------
>
>                 Key: SYSTEMML-2160
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2160
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>            Priority: Major
>             Fix For: SystemML 1.1
>
>
> So far, the codegen optimizer computes the lower bound costs for cost-based pruning without proper awareness of sparsity exploiting operators. This led to suboptimal plans because sub areas of the search space are pruned too eagerly.



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