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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SYSTEMML-1976) Slow codegen outer left/right mm w/ ultra-sparse inputs
Date Wed, 22 Nov 2017 23:25:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-1976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm closed SYSTEMML-1976.
------------------------------------
       Resolution: Fixed
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 1.0

> Slow codegen outer left/right mm w/ ultra-sparse inputs
> -------------------------------------------------------
>
>                 Key: SYSTEMML-1976
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1976
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> Recent ALS-CG experiments with the ultra-sparse amazon reviews dataset (sparsity 1.2e-6)
have show unnecessarily slow codegen outer (especially left mm) operations. This task aims
to fix this by better cache blocking to ensure blocking itself does not introduce overhead
for ultra-sparse matrices.



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