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https://issues.apache.org/jira/browse/SYSTEMML-959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm updated SYSTEMML-959:
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Summary: Performance grouped aggregate (single block aggregation) (was:
Misc performance improvements 0.11 release)
> Performance grouped aggregate (single block aggregation)
> --------------------------------------------------------
>
> Key: SYSTEMML-959
> URL: https://issues.apache.org/jira/browse/SYSTEMML-959
> Project: SystemML
> Issue Type: Task
> Components: Compiler, Runtime
> Reporter: Matthias Boehm
>
> This task tracks various minor performance features for the upcoming 0.11
> release (identified ). In detail, this includes:
> 1) New IPA pass 'move checkpoint after update' (avoid unnecessary caching)
> 2) Avoid unnecessary 'parfor eager caching' count if RDD already cached
> 3) Performance grouped aggregate (full reduce if single block aggregation)
> 4) Avoid unnecessary eviction after appending vector of ones (merge append
> into binary read)
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