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https://issues.apache.org/jira/browse/MAPREDUCE-2911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093524#comment-13093524
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Milind Bhandarkar commented on MAPREDUCE-2911:
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@Arun No, I don't need the whole node. In fact, looking more into the orted
code, multiple mpi daemons can be made to exist on the same node. So, no issue
there.
Re: security, mentioned above, is the following acceptable?
1. MPI App Master generates a random passphrase, and writes into nodes.lst
(which is 600).
2. Job client downloads nodes.lst to local directory (and preserves
permissions).
3. mpirun reads nodes.lst and supplies this passphrase to orted when asking it
to fork executable.
4. If passphrase matches, user-specified executable runs, otherwise it as an
error.
> 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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