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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SINGA-8) Implement distributed Hogwild
Date Thu, 25 Jun 2015 13:45:05 GMT

    [ https://issues.apache.org/jira/browse/SINGA-8?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14601208#comment-14601208
] 

ASF subversion and git services commented on SINGA-8:
-----------------------------------------------------

Commit 51d4c2aec4f9ddedeff588a916b25a0041dd8a88 in incubator-singa's branch refs/heads/master
from wang wei
[ https://git-wip-us.apache.org/repos/asf?p=incubator-singa.git;h=51d4c2a ]

SINGA-8 Implement distributed Hogwild
Have replaced hard-code enpoints with RegistPocs() and GetProcHost() implemented with the
help of zookeeper.
TODO slice large Param objects in a separate branch.


> Implement distributed Hogwild
> -----------------------------
>
>                 Key: SINGA-8
>                 URL: https://issues.apache.org/jira/browse/SINGA-8
>             Project: Singa
>          Issue Type: New Feature
>            Reporter: wangwei
>            Assignee: wangwei
>              Labels: distributed, features, hogwild
>
> Generally, both the Downpour framework of Google Brain [1] and the Caffe's distributed
Hogwild implementation are extensions of the shared memory Hogwild training. In this ticket,
we refer to the second one.
> In specific, each server group masters a subset of parameters (i.e., Param objects) when
synchronizing with other server groups. It aggregates all updates for its subset and sends
back (e.g., broadcast) the updated parameters back to all other server groups. The synchronization
is conducted asynchronously. The frequency can be fixed in the first implementations. Finally,
it should be tuned automatically to fully utilize the network bandwidth.
> [1]J. Dean, G. Corrado, R. Monga, K. Chen, M. Devin, Q. V. Le, M. Z. Mao, M. Ranzato,
A. W. Senior, P. A. Tucker, K. Yang, and A. Y. Ng. Large scale
> distributed deep networks. In NIPS, pages 1232{1240, 2012.



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