On Mar 30, 2007, at 10:29 AM, Yu Chen wrote:
>>> FFLAGS = -fno-underscoring -O
>>> FFLAGS2 = -fno-underscoring -O
>>
>> What are FFLAGS and FFLAGS2 used for? Are those flags passed to
>> LAM's configure/build process, or just to the configure/build process
>> of your application?
>>
>> If they're just passed to your application, I suspect that this is
>> your problem (i.e., remove them and things should be fine).
>
> Yeah, it just passed to the application, I removed them, but still not
> working, although it gave lot less undefined errors, I will try to
> pass
> that to LAM's configure/build process, see it that works.
No, don't do that.
The issue here is that all Fortran compilers have a specific name-
mangling scheme. There are 4 typical schemes:
- all lower case
- all upper case
- add one underscore to the end of the symbol
- add one underscore to the end of the symbol unless there's already
an underscore in the symbol -- then add 2 underscores
You just need LAM and your application to match. If you use the -f
switch, you're telling the fortran compiler to change its name
mangling scheme. Using the "native" scheme is usually the easiest.
So just don't pass the -f flag to either LAM's or your application's
build process.
If you're getting other missing symbols, are they LAM or MPI
related? If not, you might want to check the -f settings for your
other libraries, ensure that you're linking in all the right
libraries, etc.
> Regards,
> Chen
>
>
>>
>>> Regards,
>>> Chen
>>>
>>>
>>>> It sounds like you have a case of compiling LAM/MPI with one
>>>> fortran
>>>> compiler and compiling your application with a different Fortran
>>>> compiler.
>>>>
>>>> Can you verify that you're using the same Fortran compiler for
>>>> both?
>>>>
>>>>
>>>> On Mar 29, 2007, at 1:39 PM, Yu Chen wrote:
>>>>
>>>>> Hi, wondering if someone can help me out;
>>>>>
>>>>> I am using RHEL 4, with g95 version of G95 (GCC 4.0.3 (g95 0.90!)
>>>>> Jul 27
>>>>> 2006), when installing LAM-MPI 7.1.3, everything is fine, the
>>>>> "laminfo"
>>>>> and "mpif77 --showme" outputs follows. Then when I
>>>>> tried to compile our program, it gave out following error.
>>>>>
>>>>> ......
>>>>> In function `MAIN_':
>>>>> : undefined reference to `mpi_init'
>>>>> In function `MAIN_':
>>>>> : undefined reference to `mpi_comm_rank'
>>>>> In function `MAIN_':
>>>>> : undefined reference to `mpi_comm_size'
>>>>> In function `MAIN_':
>>>>> : undefined reference to `mpi_barrier'
>>>>> In function `MAIN_':
>>>>> : undefined reference to `mpi_bcast'
>>>>> In function `MAIN_':
>>>>> : undefined reference to `mpi_bcast'
>>>>> undefined reference to `mpi_comm_dup_fn'
>>>>> undefined reference to `mpi_comm_null_delete_fn'
>>>>> undefined reference to `mpi_comm_null_copy_fn'
>>>>> undefined reference to `mpi_dup_fn'
>>>>> undefined reference to `mpi_null_copy_fn'
>>>>> undefined reference to `mpi_null_delete_fn'
>>>>> undefined reference to `mpi_type_null_copy_fn'
>>>>> undefined reference to `mpi_type_null_delete_fn'
>>>>> undefined reference to `mpi_type_dup_fn'
>>>>> undefined reference to `mpi_win_null_copy_fn'
>>>>> undefined reference to `mpi_win_dup_fn'
>>>>> undefined reference to `mpi_win_null_delete_fn'
>>>>> ......
>>>>>
>>>>> #### Laminfo output ####
>>>>> LAM/MPI: 7.1.3
>>>>> Prefix: /usr/local/lam-g95
>>>>> Architecture: x86_64-unknown-linux-gnu
>>>>> Configured by: cheny
>>>>> Configured on: Thu Mar 29 10:26:01 EDT 2007
>>>>> Memory manager: ptmalloc2
>>>>> C bindings: yes
>>>>> C++ bindings: yes
>>>>> Fortran bindings: yes
>>>>> C compiler: gcc
>>>>> C++ compiler: g++
>>>>> Fortran compiler: /usr/local/g95-32/bin/g95
>>>>> Fortran symbols: double_underscore
>>>>> C profiling: yes
>>>>> C++ profiling: yes
>>>>> Fortran profiling: yes
>>>>> C++ exceptions: no
>>>>> Thread support: yes
>>>>> ROMIO support: yes
>>>>> IMPI support: no
>>>>> Debug support: no
>>>>> Purify clean: no
>>>>> SSI boot: globus (API v1.1, Module v0.6)
>>>>> SSI boot: rsh (API v1.1, Module v1.1)
>>>>> SSI boot: slurm (API v1.1, Module v1.0)
>>>>> SSI coll: lam_basic (API v1.1, Module v7.1)
>>>>> SSI coll: shmem (API v1.1, Module v1.0)
>>>>> SSI coll: smp (API v1.1, Module v1.2)
>>>>> SSI rpi: crtcp (API v1.1, Module v1.1)
>>>>> SSI rpi: lamd (API v1.0, Module v7.1)
>>>>> SSI rpi: sysv (API v1.0, Module v7.1)
>>>>> SSI rpi: tcp (API v1.0, Module v7.1)
>>>>> SSI rpi: usysv (API v1.0, Module v7.1)
>>>>> SSI cr: self (API v1.0, Module v1.0)
>>>>>
>>>>> #### mpif77 --showme outputs ####
>>>>> /usr/local/g95-32/bin/g95 -I/usr/local/lam-g95/include -pthread
>>>>> -L/usr/local/lam-g95/lib -llammpio -llamf77mpi -lmpi -llam -laio -
>>>>> laio
>>>>> -lutil -ldl
>>>>>
>>>>> Thank you
>>>>>
>>>>> Chen
>>>>>
>>>>> ===========================================
>>>>> Yu Chen
>>>>> Howard Hughes Medical Institute
>>>>> Chemistry Building, Rm 182
>>>>> University of Maryland at Baltimore County
>>>>> 1000 Hilltop Circle
>>>>> Baltimore, MD 21250
>>>>>
>>>>> phone: (410)455-6347 (primary)
>>>>> (410)455-2718 (secondary)
>>>>> fax: (410)455-1174
>>>>> email: chen_at_[hidden]
>>>>> ===========================================
>>>>> _______________________________________________
>>>>> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>>>>
>>>>
>>>>
>>>
>>>
>>> ===========================================
>>> Yu Chen
>>> Howard Hughes Medical Institute
>>> Chemistry Building, Rm 182
>>> University of Maryland at Baltimore County
>>> 1000 Hilltop Circle
>>> Baltimore, MD 21250
>>>
>>> phone: (410)455-6347 (primary)
>>> (410)455-2718 (secondary)
>>> fax: (410)455-1174
>>> email: chen_at_[hidden]
>>> ===========================================
>>> _______________________________________________
>>> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>>
>>
>>
>
>
> ===========================================
> Yu Chen
> Howard Hughes Medical Institute
> Chemistry Building, Rm 182
> University of Maryland at Baltimore County
> 1000 Hilltop Circle
> Baltimore, MD 21250
>
> phone: (410)455-6347 (primary)
> (410)455-2718 (secondary)
> fax: (410)455-1174
> email: chen_at_[hidden]
> ===========================================
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
--
Jeff Squyres
Cisco Systems
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