Guess I'm still confused a bit - are you saying that the rebuild no longer 
fixes the problem?

Otherwise, I don't see a ready solution. If your system undergoes a significant 
change, then rebuilding is not an unexpected requirement.


On Jan 5, 2012, at 10:39 AM, devendra rai wrote:

> Hello Ralph,
> 
> Yes, historically, the rebuild fixed the problem. But, now, how do I rebuild 
> against a new libc? And doesn't mpi build process automatically pick up 
> whatever libc version I have?
> 
> I cant seem to google this solution. I already included my configure line for 
> building open-mpi.
> 
> Thanks a lot.
> 
> Devendra Rai
> 
> From: Ralph Castain <r...@open-mpi.org>
> To: devendra rai <rai.deven...@yahoo.co.uk>; Open MPI Users 
> <us...@open-mpi.org> 
> Sent: Thursday, 5 January 2012, 18:32
> Subject: Re: [OMPI users] Strange Segfault in mpirun: orterun.c:486
> 
> Let me see if I understand correctly. You performed some upgrades on Linux, 
> and then orterun fails. Rebuilding OMPI resolved the problem.
> 
> Is that correct? If so, then I'm not terribly surprised - it depends on what 
> got upgraded. For example, if the default libc changed due to a revision 
> upgrade, then you probably do need to rebuild against it.
> 
> 
> On Jan 5, 2012, at 10:28 AM, devendra rai wrote:
> 
>> Hello All,
>> 
>> This has happened to me many times, but a simple rebuild of the Open-MPI 
>> generally fixed it.
>> 
>> I had a perfectly working (and tested) MPI application till a few days ago. 
>> Since then, there has been some upgrades on my Linux OS (basically, the ones 
>> which the system picks up automatically). 
>> 
>> Now, I rebuild and rerun the same application, I get this:
>> 
>> mpirun: orterun.c:486: orterun: Assertion `((0xdeafbeedULL << 32) + 
>> 0xdeafbeedULL) == ((opal_object_t *) (&cmd_line))->obj_magic_id' failed.
>> [Morpheus:24572] *** Process received signal ***
>> [Morpheus:24572] Signal: Aborted (6)
>> [Morpheus:24572] Signal code:  (-6)
>> [Morpheus:24572] [ 0] /lib64/libpthread.so.0(+0xf2d0) [0x7fd23c9312d0]
>> [Morpheus:24572] [ 1] /lib64/libc.so.6(gsignal+0x35) [0x7fd23c5e7ab5]
>> [Morpheus:24572] [ 2] /lib64/libc.so.6(abort+0x186) [0x7fd23c5e8fb6]
>> [Morpheus:24572] [ 3] /lib64/libc.so.6(__assert_fail+0xf5) [0x7fd23c5e0385]
>> [Morpheus:24572] [ 4] 
>> /home/Morpheus/CustomInstalledPrograms/OpenMPI-1.4.2/bin/mpirun() [0x4037ed]
>> [Morpheus:24572] [ 5] 
>> /home/Morpheus/CustomInstalledPrograms/OpenMPI-1.4.2/bin/mpirun() [0x4032a4]
>> [Morpheus:24572] [ 6] /lib64/libc.so.6(__libc_start_main+0xfd) 
>> [0x7fd23c5d3bfd]
>> [Morpheus:24572] [ 7] 
>> /home/Morpheus/CustomInstalledPrograms/OpenMPI-1.4.2/bin/mpirun() [0x4031c9]
>> [Morpheus:24572] *** End of error message ***
>> 
>> 
>> I have a custom installation of open-mpi, with the configure script looking 
>> like this:
>> 
>> ./configure --enable-mpi-threads=yes 
>> -prefix=/home/Morpheus/CustomInstalledPrograms/OpenMPI-1.4.2 
>> --enable-mem-profile --enable-mem-debug --enable-debug --enable-trace 
>> --enable-memchecker --with-valgrind=/usr --with-threads=posix 
>> 
>> The rebuild of my application was successful.
>> 
>> Where should I fix it? and How?
>> 
>> Thanks for ideas.
>> 
>> Best
>> 
>> Devendra
>> _______________________________________________
>> users mailing list
>> us...@open-mpi.org
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
> 
> 
> 
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