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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 Tue, 30 Aug 2011 07:38:37 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093515#comment-13093515
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Arun C Murthy commented on MAPREDUCE-2911:
------------------------------------------

bq. I need at most one MPI container per physical node (until I figure out how to avoid port
conflicts etc).

Do you need one container per node or the whole node?

I suspect you want the whole node to the 'virtual' cluster, if so just ask for all resources
(RAM) on that node.

If you need one container per node then ask for 1 container on a node and only 1 on the rack
- of course you can reject containers on 'known' nodes too.

> 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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