[MITgcm-support] OpenMPI and Mac Pro

[Jean-Michel Campin]

Hi Nicolas,

I have an other suggestion (not very original): I would try a lower 
optimisation: -O3 is the default in darwin_ia32_gfortran+mpi and it 
happens sometimes that "internal compiler error" goes away with -O2 
or -O1 instead of -O3.

Cheers,
Jean-Mcihel

On Thu, Mar 03, 2011 at 06:18:19PM -0800, Yuan Lian wrote:
> I assume you used macports to install 64bit gcc, gfortran and openmpi. I  
> am using this opt file
> and so far it works very well on an 8 core mac pro. Hope this helps.
>
>
> CPP='/usr/bin/cpp -traditional -P'
> FC=openmpif90
> CC=openmpicc
>
> LINK=openmpif90
> NOOPTFLAGS='-O0'
> EXTENDED_SRC_FLAG='-ffixed-line-length-132'
> MPIROOT=/opt/local
>
> S64='$(TOOLSDIR)/set64bitConst.sh'
> DEFINES='-DWORDLENGTH=4 -DNML_TERMINATOR'
> INCLUDEDIRS=`pkg-config --variable=includedir`
> INCLUDES=$(eval echo "-I/opt/local/include/openmpi -I/opt/local/include  
> "  `pkg-config --cflags`)
> LIBS='-L/opt/local/lib'
>
> #  For IEEE, use the "-ffloat-store" option
> if test "x$IEEE" = x ; then
>     FFLAGS='-Wunused -Wuninitialized -fno-second-underscore  
> -fconvert=big-endian'
>     FOPTIM='-O3 -funroll-loops'
>     NOOPTFLAGS='-O2 -funroll-loops'
> else
>     FFLAGS='-Wunused -ffloat-store -fno-second-underscore  
> -fconvert=big-endian'
>     FOPTIM='-O0'
> fi
>
> On 3/3/11 2:40 PM, Nicolas Grisouard wrote:
>> Hi,
>>
>> I just got a brand new 8-core Mac Pro and am trying to run a  
>> parallelized version of MITgcm. I use GCC 4.6 (which includes  
>> gfortran) and OpenMPI 1.4
>>
>> To build it, I tried to start from the optfile  
>> darwin_ia32_gfortran+mpi and just added an additional path for the  
>> libs (see attached). genmake2 with option -mpi works well, make depend  
>> too but the compilation itself produces the following error:
>>
>> make: *** [exch_uv_agrid_3d_rl.o] Error 1
>> exch_uv_agrid_3d_rs.for: In function ‘exch_uv_agrid_3d_rs’:
>> exch_uv_agrid_3d_rs.for:278:0: internal compiler error: in  
>> build2_stat, at tree.c:3795
>> Please submit a full bug report,
>> with preprocessed source if appropriate.
>> See <http://gcc.gnu.org/bugs.html> for instructions.
>>
>> It's tempting to follow the suggestion but as a few people are using  
>> this configuration, I was wondering what their configuration/optfile  
>> were, or if they had come accross this problem. And maybe there is a  
>> more dumb problem, given my gross lack of experience in parallelized  
>> computing.
>>
>> Also note that this error occurs when I indicate nPx=2 in SIZE.h, and  
>> not when nPx=1. In the latter case, compilation goes smoothly. The  
>> configuration is basically MITgcm/verification/internal_wave as I'm  
>> still running some tests.
>>
>> Thanks for all the help/input.
>> Nicolas.
>>
>>
>> _______________________________________________
>> MITgcm-support mailing list
>> MITgcm-support at mitgcm.org
>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>

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