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From "Jim Challenger (JIRA)" <...@uima.apache.org>
Subject [jira] [Resolved] (UIMA-4256) DUCC: RM allow "hostile" jobs that don't share resources with others
Date Thu, 05 Mar 2015 16:00:42 GMT

     [ https://issues.apache.org/jira/browse/UIMA-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jim Challenger resolved UIMA-4256.
----------------------------------
    Resolution: Won't Fix

On more discussion we realized that we could use cgroups to limit CPU usage so jobs don't
become "hostile."   No need to modify RM.

> DUCC: RM allow "hostile" jobs that don't share resources with others
> --------------------------------------------------------------------
>
>                 Key: UIMA-4256
>                 URL: https://issues.apache.org/jira/browse/UIMA-4256
>             Project: UIMA
>          Issue Type: Improvement
>          Components: DUCC
>    Affects Versions: 1.1.0-Ducc
>            Reporter: Jim Challenger
>            Assignee: Jim Challenger
>             Fix For: 2.0.0-Ducc
>
>
> Certain types of jobs will consume every processor on a host regardless of the memory
assignment.  This update allows the declaration of a "hostile" flag in a FAIR_SHARE class
definition that instructs the RM not to schedule other work on any processor with a job submitted
to a hostile class.  If this is done, the full share count of each host is accounted under
the user's fair-share allocation regardless of the memory declaration.



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