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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SYSTEMML-2320) Parfor integration
Date Thu, 17 May 2018 18:13:00 GMT

    [ https://issues.apache.org/jira/browse/SYSTEMML-2320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479486#comment-16479486
] 

Matthias Boehm commented on SYSTEMML-2320:
------------------------------------------

Yeah almost - the degree of parallelism for the entire hierarchy of nodes is computed independent
of the operator types by another parfor rewrite. In its basic form, it would assign a degree
of parallelism n=K/k to the remaining ops, where K is the maximum parallelism, and k is the
parfor degree of parallelism. Note that each parfor thread would run an instance of {{paramserv}},
and thus in total we have a degree of parallelism of n*k. 

> Parfor integration
> ------------------
>
>                 Key: SYSTEMML-2320
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2320
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: LI Guobao
>            Assignee: LI Guobao
>            Priority: Major
>
> It aims to garanti the robustness for the case that the paramserv function is used inside
a parfor statement.



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