[jira] [Closed] (SYSTEMML-1009) Avoid spark context creation on parfor optimization

["Matthias Boehm (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SYSTEMML-1009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias Boehm closed SYSTEMML-1009.
------------------------------------

> Avoid spark context creation on parfor optimization
> ---------------------------------------------------
>
>                 Key: SYSTEMML-1009
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1009
>             Project: SystemML
>          Issue Type: Improvement
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 0.11
>
>
> Currently, every parfor script triggers the lazy spark context creation, independent of its input data size and script in order to obtain memory budgets and parallelism. On small data the the spark context creation dominates end-to-end execution time. We should improve this to a configuration-only analysis, which would avoid the context creation.
> For example, here are the XS and S performance results for univariate statistics:
> {code}
> UnivariateStatistics on mbperftest/bivar/A_10k/data: 14
> UnivariateStatistics on mbperftest/bivar/A_10k/data: 14
> UnivariateStatistics on mbperftest/bivar/A_10k/data: 17
> UnivariateStatistics on mbperftest/bivar/A_10k/data: 16
> UnivariateStatistics on mbperftest/bivar/A_100k/data: 14
> UnivariateStatistics on mbperftest/bivar/A_100k/data: 15
> UnivariateStatistics on mbperftest/bivar/A_100k/data: 14
> UnivariateStatistics on mbperftest/bivar/A_100k/data: 17
> {code}



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