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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HORN-25) Syncopated synchronization for parallel SGD
Date Tue, 24 May 2016 00:53:12 GMT
Edward J. Yoon created HORN-25:
----------------------------------

             Summary: Syncopated synchronization for parallel SGD
                 Key: HORN-25
                 URL: https://issues.apache.org/jira/browse/HORN-25
             Project: Apache Horn
          Issue Type: Bug
            Reporter: Edward J. Yoon


The legacy code is two barriers for merging and broadcasting updates among workers and master.
We can reduce this to one barrier by using a syncopated synchronization. For example, master
sends previous updated weights and computes newly received updates during waiting for next
updates from workers. This will reduce the performance dramatically I think.



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