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