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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2911) Hamster: Hadoop And Mpi on the same cluSTER
Date Wed, 31 Aug 2011 06:19:11 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13094340#comment-13094340
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Arun C Murthy commented on MAPREDUCE-2911:
------------------------------------------

{quote}
"hamster" is a client application that connects to the RM, asks it to create an AM with 32
containers, and after all of those are launched, executed a.out inside them, after setting
some environment variables for connecting to the AM to get the "node list".
{quote}

Milind, I'm fairly ignorant about OpenMPI - does this mean you don't need a 'unix process'
other than the one running a.out itself? Or, do you still need to run some other daemon to
then fork a.out?

> Hamster: Hadoop And Mpi on the same cluSTER
> -------------------------------------------
>
>                 Key: MAPREDUCE-2911
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2911
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: mrv2
>    Affects Versions: 0.23.0
>         Environment: All Unix-Environments
>            Reporter: Milind Bhandarkar
>            Assignee: Milind Bhandarkar
>             Fix For: 0.23.0
>
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> MPI is commonly used for many machine-learning applications. OpenMPI (http://www.open-mpi.org/)
is a popular BSD-licensed version of MPI. In the past, running MPI application on a Hadoop
cluster was achieved using Hadoop Streaming (http://videolectures.net/nipsworkshops2010_ye_gbd/),
but it was kludgy. After the resource-manager separation from JobTracker in Hadoop, we have
all the tools needed to make MPI a first-class citizen on a Hadoop cluster. I am currently
working on the patch to make MPI an application-master. Initial version of this patch will
be available soon (hopefully before September 10.) This jira will track the development of
Hamster: The application master for MPI.

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