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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2016/09/26 17:46:20 UTC

[jira] [Updated] (SYSTEMML-959) Performance grouped aggregate (single block aggregation)

     [ https://issues.apache.org/jira/browse/SYSTEMML-959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Boehm updated SYSTEMML-959:
------------------------------------
    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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