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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SYSTEMML-2403) Paramserv low accuracy sometimes occurred
Date Fri, 22 Jun 2018 19:21:00 GMT

    [ https://issues.apache.org/jira/browse/SYSTEMML-2403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16520708#comment-16520708
] 

Matthias Boehm commented on SYSTEMML-2403:
------------------------------------------

I just ran this scenario several times with different numbers of workers but was not able
to reproduce this (I always get {{Val Accuracy: 0.8915}}). Maybe a previous change fixes some
side effect? Let's keep this task open for now - if we don't encounter this issue again in
the next weeks, we can close it.

> Paramserv low accuracy sometimes occurred
> -----------------------------------------
>
>                 Key: SYSTEMML-2403
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2403
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: LI Guobao
>            Assignee: LI Guobao
>            Priority: Major
>
> We could observe that the low accuracy will sometimes occurred. Here is the scenario:
_BSP, BATCH, DISJOINT_CONTIGUOUS (or DISJOINT_RANDOM)_ with _1 epoch, 4 workers (I have 4
vcores in my machine) and batchSize 16_ using 60k minist.
> {code:java}
> Val Loss:	2.3006845853187783
> Val Accuracy:	0.11183333333333334
> {code}



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