[jira] [Resolved] (SYSTEMML-1547) Cache-conscious post processing tsmm

["Matthias Boehm (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SYSTEMML-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Boehm resolved SYSTEMML-1547.
--------------------------------------
       Resolution: Done
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 0.14

> Cache-conscious post processing tsmm
> ------------------------------------
>
>                 Key: SYSTEMML-1547
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1547
>             Project: SystemML
>          Issue Type: Task
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 0.14
>
>
> For scenarios like tsmm outer products t(X) %*% X, where X is a row vector, the post-processing in terms of (1) copying the upper to lower triangle, and (2) nnz recomputation significantly contribute to the execution time.
> This task aims at a cache-conscious copy of upper to lower triangles similar to dense-dense transpose as well as fusing the nnz recompuation into either the computation or copy operation.



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