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https://issues.apache.org/jira/browse/SYSTEMML-1255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm updated SYSTEMML-1255:
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Summary: New fused operator tack+* in CP and Spark (was: New fused
operator tack+* in CP)
> New fused operator tack+* in CP and Spark
> -----------------------------------------
>
> Key: SYSTEMML-1255
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1255
> Project: SystemML
> Issue Type: Sub-task
> Components: Compiler
> Reporter: Matthias Boehm
>
> Similar to the existing tak+* operator, this new tack+* operator fused two or
> three binary multiply operations and final column-wise aggregation
> colSums(X*Y*Z) in order to avoid materializing the intermediates which is
> very expensive compared to the cheap multiply and sum operations.
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