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From "Matei Zaharia (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-183) Included MPI Framework Fails to Start
Date Thu, 12 Apr 2012 17:29:19 GMT

    [ https://issues.apache.org/jira/browse/MESOS-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252627#comment-13252627
] 

Matei Zaharia commented on MESOS-183:
-------------------------------------

While we're at it, we should also consider renaming the script. The "n" in nmpiexec is from
back when Mesos used to be called Nexus!
                
> Included MPI Framework Fails to Start
> -------------------------------------
>
>                 Key: MESOS-183
>                 URL: https://issues.apache.org/jira/browse/MESOS-183
>             Project: Mesos
>          Issue Type: Bug
>          Components: documentation, framework
>         Environment: Scientific Linux Cluster
>            Reporter: Jessica J
>            Assignee: Harvey Feng 
>              Labels: documentation, mpi, setup
>
> There are really two facets to this issue. The first is that no good documentation exists
for setting up and using the included MPI framework. The second, and more important issue,
is that the framework will not run. The second issue is possibly related to the first in that
I may not be setting it up properly. 
> To test the MPI framework, by trial and error I determined I needed to run python setup.py
build and python setup.py install in the MESOS-HOME/src/python directory. Now when I try to
run nmpiexec -h, I get an AttributeError, below: 
> Traceback (most recent call last):
>   File "./nmpiexec.py", line 2, in <module>
>     import mesos
>   File "/usr/lib64/python2.6/site-packages/mesos-0.9.0-py2.6-linux-x86_64.egg/mesos.py",
line 22, in <module>
>     import _mesos
>   File "/usr/lib64/python2.6/site-packages/mesos-0.9.0-py2.6-linux-x86_64.egg/mesos_pb2.py",
line 1286, in <module>
>     DESCRIPTOR.message_types_by_name['FrameworkID'] = _FRAMEWORKID
> AttributeError: 'FileDescriptor' object has no attribute 'message_types_by_name'
> I've examined setup.py and determined that the version of protobuf it includes (2.4.1)
does, indeed, contain a FileDescriptor class in descriptor.py that sets self.message_types_by_name,
so I'm not sure what the issue is. Is this a bug? Or is there a step I'm missing? Do I need
to also build/install protobuf?

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