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Subject: Re: [OMPI users] simple test problem hangs on mpi_finalize and consumes all system resources
From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
Date: 2014-01-24 11:38:38


Ok. I only mention this because the "mca_paffinity_linux.so: undefined symbol: mca_base_param_reg_int" type of message is almost always an indicator of two different versions being installed into the same tree.

On Jan 24, 2014, at 11:26 AM, "Fischer, Greg A." <fischega_at_[hidden]> wrote:

> Version 1.4.3 and 1.6.5 were and are installed in separate trees:
>
> 1003 fischega_at_lxlogin2[~]> ls /tools/casl_sles10/vera_clean/gcc-4.6.1/toolset/openmpi-1.*
> /tools/casl_sles10/vera_clean/gcc-4.6.1/toolset/openmpi-1.4.3:
> bin etc include lib share
>
> /tools/casl_sles10/vera_clean/gcc-4.6.1/toolset/openmpi-1.6.5:
> bin etc include lib share
>
> I'm fairly sure I was careful to check that the LD_LIBRARY_PATH was set correctly, but I'll check again.
>
>> -----Original Message-----
>> From: users [mailto:users-bounces_at_[hidden]] On Behalf Of Jeff
>> Squyres (jsquyres)
>> Sent: Friday, January 24, 2014 11:07 AM
>> To: Open MPI Users
>> Subject: Re: [OMPI users] simple test problem hangs on mpi_finalize and
>> consumes all system resources
>>
>> On Jan 22, 2014, at 10:21 AM, "Fischer, Greg A."
>> <fischega_at_[hidden]> wrote:
>>
>>> The reason for deleting the openmpi-1.6.5 installation was that I went back
>> and installed openmpi-1.4.3 and the problem (mostly) went away. Openmpi-
>> 1.4.3 can run the simple tests without issue, but on my "real" program, I'm
>> getting symbol lookup errors:
>>>
>>> mca_paffinity_linux.so: undefined symbol: mca_base_param_reg_int
>>
>> This sounds like you are mixing 1.6.x and 1.4.x in the same installation tree.
>> This can definitely lead to sadness.
>>
>> More specifically: installing 1.6 over an existing 1.4 installation (and vice
>> versa) is definitely NOT supported. The set of plugins that the two install are
>> different, and can lead to all manner of weird/undefined behavior.
>>
>> FWIW: I typically install Open MPI into a tree by itself. And if I later want to
>> remove that installation, I just "rm -rf" that tree. Then I can install a different
>> version of OMPI into that same tree (because the prior tree is completely
>> gone).
>>
>> However, if you can't install OMPI into a tree by itself, you can "make
>> uninstall" from the source tree, and that should surgically completely
>> remove OMPI from the installation tree. Then it is safe to install a different
>> version of OMPI into that same tree.
>>
>> Can you verify that you had installed OMPI into completely clean trees? If
>> you didn't, I can imagine that causing the kinds of errors that you described.
>>
>> --
>> Jeff Squyres
>> jsquyres_at_[hidden]
>> For corporate legal information go to:
>> http://www.cisco.com/web/about/doing_business/legal/cri/
>>
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>
>
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-- 
Jeff Squyres
jsquyres_at_[hidden]
For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/