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https://issues.apache.org/jira/browse/SYSTEMML-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-1507.
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> Additional meta operator template: SpoofRowwise
> -----------------------------------------------
>
> Key: SYSTEMML-1507
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1507
> Project: SystemML
> Issue Type: Sub-task
> Components: Compiler, Runtime
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Fix For: SystemML 1.0
>
>
> This task aims to add further codegen templates besides the existing
> SpoofCellwise, SpoofRowAggregate, SpoofOuterProduct, SpoofMultiAggregate.
> Rowwise Templates: In addition to our row aggregate template (which supports
> rowwise column aggregations) we want to be able to fuse arbitrary rowwise
> operations with and without aggregate in order to avoid unnecessary
> intermediates for expressions like B = (A <= rowMins(A)); C = B / rowSums
> (B), which should become a single operator instead of 4 scans and two matrix
> and two vector intermediates. Similar to our existing SpoofCellwise template
> (which supports no aggregation, row aggregation, and full aggregation), this
> SpoofRowwise template should support no aggregation, row aggregation, and
> column aggregation.
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