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Subject: Re: [OMPI devel] Missing Symbol
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-03-05 13:35:40


You said this component was a copy of Aurelien's component? Did you rename the critical elements (e.g., component, module) inside it to avoid name confusion?

On Mar 5, 2010, at 11:27 AM, Leonardo Fialho wrote:

> I see... but it is really strange because this module is clean, it does not use nothing. This is the output of the nm command, I can't see any symbol which is not available.
>
> [lfialho_at_aoclsb-clus openmpi]$ nm mca_vprotocol_receiver.so
> 0000000000201208 a _DYNAMIC
> 0000000000201408 a _GLOBAL_OFFSET_TABLE_
> w _Jv_RegisterClasses
> 00000000002011e0 d __CTOR_END__
> 00000000002011d8 d __CTOR_LIST__
> 00000000002011f0 d __DTOR_END__
> 00000000002011e8 d __DTOR_LIST__
> 00000000000011d0 r __FRAME_END__
> 00000000002011f8 d __JCR_END__
> 00000000002011f8 d __JCR_LIST__
> 0000000000201640 A __bss_start
> w __cxa_finalize@@GLIBC_2.2.5
> 0000000000000d40 t __do_global_ctors_aux
> 00000000000007c0 t __do_global_dtors_aux
> 0000000000201200 d __dso_handle
> w __gmon_start__
> 0000000000201640 A _edata
> 0000000000201648 A _end
> 0000000000000d78 T _fini
> 0000000000000750 T _init
> 00000000000007a0 t call_gmon_start
> 0000000000201640 b completed.6115
> 0000000000000810 t frame_dummy
> U mca_pml_v
> 0000000000201460 D mca_vprotocol_receiver
> 0000000000000c71 t mca_vprotocol_receiver_add_comm
> 0000000000000a5f t mca_vprotocol_receiver_add_procs
> 0000000000201540 D mca_vprotocol_receiver_component
> 0000000000000cc3 t mca_vprotocol_receiver_component_close
> 0000000000000d18 t mca_vprotocol_receiver_component_finalize
> 0000000000000cce t mca_vprotocol_receiver_component_init
> 0000000000000cb8 t mca_vprotocol_receiver_component_open
> 0000000000000c93 t mca_vprotocol_receiver_del_comm
> 0000000000000a89 t mca_vprotocol_receiver_del_procs
> 000000000000083c t mca_vprotocol_receiver_dump
> 0000000000000d23 t mca_vprotocol_receiver_enable
> 00000000000009e7 t mca_vprotocol_receiver_iprobe
> 0000000000000b9a t mca_vprotocol_receiver_irecv
> 0000000000000ab3 t mca_vprotocol_receiver_isend
> 0000000000000a29 t mca_vprotocol_receiver_probe
> 0000000000000c00 t mca_vprotocol_receiver_recv
> 0000000000000b21 t mca_vprotocol_receiver_send
> 00000000000009bd T mca_vprotocol_receiver_start
> 0000000000000864 t mca_vprotocol_receiver_test
> 0000000000000896 t mca_vprotocol_receiver_test_all
> 00000000000008d0 t mca_vprotocol_receiver_test_any
> 0000000000000950 t mca_vprotocol_receiver_test_some
> 0000000000000916 t mca_vprotocol_receiver_wait_any
> 000000000000098a t mca_vprotocol_receiver_wait_some
> U ompi_request_null
> U opal_output
> 0000000000201440 d p.6113
> [lfialho_at_aoclsb-clus openmpi]$
>
> On Mar 5, 2010, at 7:00 PM, Terry Dontje wrote:
>
>> Sorry meant to add this, but you might be able to try and find the symbol causing the issue by twiddling with LD_DEBUG
>>
>> --td
>> Terry Dontje wrote:
>>> Possibly there is an external symbol in the .so that is being loaded that cannot be resolved.
>>> --td
>>> Leonardo Fialho wrote:
>>>> Hi,
>>>>
>>>> I know that libtool does not help us to find the source of this error, but, what can generate the following error?
>>>>
>>>> [aoclsb-clus.uab.es:11724] mca: base: component_find: unable to open /home/lfialho/lib/openmpi/mca_vprotocol_receiver: perhaps a missing symbol, or compiled for a different version of Open MPI? (ignored)
>>>>
>>>> 1) yes, the file exists
>>>> 2) yes, it has been compiled among all other components
>>>> 3) yes, it is the same Open MPI version
>>>> 4) this component is a copy of the pessimist component implemented by Aurelien
>>>> 5) Aurelien's component presents the same error
>>>>
>>>> The question is: what mistake should generate an error during module loading?
>>>>
>>>> Thanks in advance,
>>>> Leonardo
>>>> _______________________________________________
>>>> devel mailing list
>>>> devel_at_[hidden]
>>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>>>
>>>
>>> _______________________________________________
>>> devel mailing list
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>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>
>> _______________________________________________
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>
>
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