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https://issues.apache.org/jira/browse/SYSTEMML-1885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm resolved SYSTEMML-1885.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 0.15
> 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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