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From "Zhankun Tang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6720) Support updating FPGA related constraint node label after FPGA device re-configuration
Date Fri, 30 Jun 2017 07:10:03 GMT

    [ https://issues.apache.org/jira/browse/YARN-6720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16069618#comment-16069618
] 

Zhankun Tang commented on YARN-6720:
------------------------------------

[~wangda]. Maybe it's my fault. Although the reconfigure FPGA device procedure is fast, the
downloading may takes a reasonable time which should be avoid. That's the key problem this
JIRA wants to solve. 

> Support updating FPGA related constraint node label after FPGA device re-configuration
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-6720
>                 URL: https://issues.apache.org/jira/browse/YARN-6720
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: Zhankun Tang
>         Attachments: Storing-and-Updating-extra-FPGA-resource-attributes-in-hdfs_v1.pdf
>
>
> In order to provide a global optimal scheduling for mutable FPGA resource, it seems an
easy and direct way to utilize constraint node labels(YARN-3409) instead of extending the
global scheduler(YARN-3926) to match both resource count and attributes.
> The rough idea is that the AM sets the constraint node label expression to request containers
on the nodes whose FPGA devices has the matching IP, and then NM resource handler update the
node constraint label if there's FPGA device re-configuration.



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