I tried that at first but hit the same problem I'm having now - lot's of "__intel_" undefined errors when I go to compile even the simplest of mpi codes.
-david
--
David Gunter
HPC-3: Infrastructure Team
Los Alamos National Laboratory
On Mar 20, 2012, at 9:36 AM, Jeffrey Squyres wrote:
> Can you build with g++ instead of icpc?
>
> All the C++ MPI bindings are inlined anyway, so the performance difference between the two might be negligible.
>
>
> On Mar 20, 2012, at 11:35 AM, Gunter, David O wrote:
>
>> I wish it were that easy. When I go that route, I get error messages like the following when trying to compile the parallel code with Intel:
>>
>> libmpi.so: undefined reference to `__intel_sse2_strcpy'
>>
>> and other messages for every single Intel-implemented standard C-function.
>>
>> -david
>> --
>> David Gunter
>> HPC-3: Infrastructure Team
>> Los Alamos National Laboratory
>>
>>
>>
>>
>> On Mar 20, 2012, at 8:18 AM, Barrett, Brian W wrote:
>>
>>> On 3/20/12 10:06 AM, "Gunter, David O" <dog_at_[hidden]> wrote:
>>>
>>>> I need to build ompi-1.4.3 (or the newer 1.4.5) with an older Intel 10.0
>>>> compiler, but on a newer system in which the default g++ headers are
>>>> incompatible with Intel. Thus the C and Fortran compilers function
>>>> normally but the Intel C++ compiler fails to build even a simple "hello
>>>> world" code.
>>>>
>>>> Is there a way to build OMPI without a C++ compiler? I tried using the
>>>> --disable-mpi-cxx and --disable-mpi-cxx-seek flags but these are just for
>>>> the resulting bindings. The configure step still continues to search for
>>>> a working C++ compiler.
>>>>
>>>> Yes, I know I can upgrade the Intel compiler but we don't have that as an
>>>> option in this case.
>>>
>>> Unfortunately, you're a bit out of luck. Open MPI 1.4.x requires C++ even
>>> if you're not building the C++ bindings. This is not true of 1.5.x and
>>> later.
>>>
>>> If you don't need the C++ bindings, I would build Open MPI with GNU C and
>>> C++ and Intel Fortran. After building, edit
>>> <PREFIX>/share/openmpi/mpicc-wrapper-data.txt to change the compiler=gcc
>>> line to compiler=<intel C compiler>. There's not going to be much
>>> performance difference between the two compilers for Open MPI itself. GNU
>>> C and Intel C are link compatible, so that should work out for you and the
>>> users will never be the wiser.
>>>
>>> Brian
>>>
>>> --
>>> Brian W. Barrett
>>> Dept. 1423: Scalable System Software
>>> Sandia National Laboratories
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>>
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>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
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>
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