MPICH vs. AIX-MPI on frost?

[John Tannahill]

More info on my problem.  There are two libraries that are put
together in src/lib:  libpnetcdf.a and libnetcdf.a.  It appears
that libnetcdf.a has all of the nfmpi_xxx routines in it.  My
guess is that somehow this libnetcdf.a library should actually
be part of the libpnetcdf.a library, then I believe I would
have all the routines I need to link with.  I think that there
was a name change a while back when libnetcdf.a got switched to
libpnetcdf.a?  Maybe a netcdf didn't get changed to a pnetcdf
somewhere where it needed to be?

Regards,
John

John Tannahill wrote:
> Tyce,
> 
> Actually, I am now running the parallel-netcdf code on an IBM SP at
> NERSC (seaborg).  I don't believe that mpich is being used at all.
> I run on seaborg because I can easily get interactive time, which I
> don't think that I can get on frost.  Anyway, you missed out on some
> of my previous messages, so I will try to bring you up to date.  The
> C interface seems to work fine.  I put together a test code in C and
> it compiled, linked, and ran.  I then converted this test code to F90.
> I have gotten this version to compile, but it won't link because it
> can't find any nfmpi_xxx routines in the library (the C code uses
> ncmpi_xxx routines and they are there).  So the question seems to be
> how to build the library so that the nfmpi_xxx routines are there?
> Perhaps you have some experience with autoconf and can figure out
> what needs to be done?
> 
> Earlier today, I contacted the one other person that apparently had
> some interest in trying the Fortran interface a couple of months ago
> (Troy Baer at the OSC), but it now appears that we may be the first
> real users (i.e., it's a little unclear, but I believe that Troy is
> still trying to carve out some time to investigate it).  I am sure
> the ANL/Northwestern people are trying to track things down as well.
> It's certainly possible that it may be something quite simple that
> I am just missing.  I did try the --with-fortran=yes flag when
> running configure, but that did not seem to help.  I have not been
> able to look at things much today, but will get back into now.
> 
> Regards,
> John
> 
> 
> JB Gallagher wrote:
> 
>> All,
>>
>> Just to let you know I just built and installed parallel-netcdf-0.8.4 
>> and built
>> the benchmark code against it and it ran fine, so for me anyway the 
>> tar ball
>> from the MCS website works the same way. Again I only tested the 
>> C-interface
>> though, I don't use any fortran for the i/o. When I first installed 
>> netcdf on
>> frost I had some mixing of the libraries that caused errors when my 
>> code ran, I
>> didn't save the output of these errors however, but they were a result of
>> having mpich in the mix.
>>
>> So I was able to build the pnetcdf code off of the mcs website the 
>> same way I
>> said before, I set all the compiler envirnment variables to the normal
>> compilers (xlc etc..) and then ran configure like so: ./configure
>> --prefix=<dir> --with-mpi=/usr/local/tools/mpich/mpich-1.2.5mpl
>>
>> then I edited macros.make  and replaceed all compiler variables 
>> (especially
>> mpich ones) with the newmp ones (xlc , newmpcc etc..)
>>
>> This creates a library that is linked to the AIX mpi implementation.
>>
>> --Brad
>>
>>
>> Rob Ross wrote:
>>
>>
>>> There's no reason that I know of why it wouldn't work with IBM's MPI;
>>> Brad, do you have any input on this?
>>>
>>> Thanks,
>>>
>>> Rob
>>>
>>> On Wed, 23 Jul 2003, Tyce Mclarty wrote:
>>>
>>>
>>>> Rob,
>>>>
>>>> I'm trying to help John Tannahill get the PnetCDF going here on his 
>>>> code.
>>>> Looking at the README.frost in the latest release, it looks like he 
>>>> may be
>>>> mixing mpich and IBM libraies.
>>>>
>>>> When you ran tests on frost, did you use mpich?
>>>>
>>>> Is there any reason it should not work with IBM's MPI?
>>>>
>>>> Thanks,
>>>> Tyce
>>>
>>>
>>
>>
> 
> 


-- 
============================
John R. Tannahill
Lawrence Livermore Nat. Lab.
P.O. Box 808, M/S L-103
Livermore, CA  94551
925-423-3514
Fax:  925-423-4908
============================