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Subject: Re: [OMPI users] WRF, OpenMPI and PGI 7.2
From: Gus Correa (gus_at_[hidden])
Date: 2009-02-19 12:40:58

Hi Gerry

You may need to compile a hybrid OpenMPI
using gcc for C, PGI f90 for Fortran on the OpenMPI configure script.
This should give you the required mpicc and mpif90 to do the job.
I guess this is what Elvedin meant on his message.

I have these hybrids for OpenMPI and MPICH2 here
(not Myrinet but GigE), and they work
fine with a WRF relative (CAM3, atmospheric climate).

Two cents from
Gus Correa
Gustavo Correa
Lamont-Doherty Earth Observatory - Columbia University
Palisades, NY, 10964-8000 - USA

Gerry Creager wrote:
> Elvedin,
> Yeah, I thought about that after finding a reference to this in the
> archives, so I redirected the path to MPI toward the gnu-compiled
> version. It died in THIS manner:
> make[3]: Entering directory `/home/gerry/WRFv3/WRFV3/external/RSL_LITE'
> mpicc -cc=gcc -DFSEEKO64_OK -w -O3 -DDM_PARALLEL -c c_code.c
> pgcc-Error-Unknown switch: -cc=gcc
> make[3]: [c_code.o] Error 1 (ignored)
> Methinks the wrf configuration script and make file will need some tweeks.
> Interesting thing: I have another system (alas, with mpich) where it
> compiles just fine. I'm trying to sort this out, as on 2 systems, with
> openMPI, it does odd dances before dying.
> I'm still trying things. I've gotta get this up both for MY research
> and to support other users.
> Thanks, Gerry
> Elvedin Trnjanin wrote:
>> WRF almost requires that you use gcc for the C/C++ part and the PGI
>> Fortran compilers, if you choose that option. I'd suggest compiling
>> OpenMPI in the same way as that has resolved our various issues. Have
>> you tried that with the same result?
>> Gerry Creager wrote:
>>> Howdy,
>>> I'm new to this list. I've done a little review but likely missed
>>> something specific to what I'm asking. I'll keep looking but need to
>>> resolve this soon.
>>> I'm running a Rocks cluster (centos 5), with PGI 7.2-3 compilers,
>>> Myricom MX2 hardware and drivers, and OpenMPI1.3
>>> I installed the Myricom roll which has OpenMPI compiled with gcc. I
>>> recently compiled the openmpi code w/ PGI.
>>> I've the MPICH_F90 pointing to the right place, and we're looking for
>>> the right includes and libs by means of LD_LIBRARY_PATH, etc.
>>> When I tried to run, I got the following error:
>>> make[3]: Entering directory `/home/gerry/WRFv3/WRFV3/external/RSL_LITE'
>>> mpicc -DFSEEKO64_OK -w -O3 -DDM_PARALLEL -c c_code.c
>>> PGC/x86-64 Linux 7.2-3: compilation completed with warnings
>>> mpicc -DFSEEKO64_OK -w -O3 -DDM_PARALLEL -c buf_for_proc.c
>>> PGC-S-0036-Syntax error: Recovery attempted by inserting identifier
>>> .Z0000 before '(' (/share/apps/openmpi-1.3-pgi/include/mpi.h: 889)
>>> PGC-S-0082-Function returning array not allowed
>>> (/share/apps/openmpi-1.3-pgi/include/mpi.h: 889)
>>> PGC-S-0043-Redefinition of symbol, MPI_Comm
>>> (/share/apps/openmpi-1.3-pgi/include/mpi.h: 903)
>>> PGC/x86-64 Linux 7.2-3: compilation completed with severe errors
>>> make[3]: [buf_for_proc.o] Error 2 (ignored)
>>> Note that I had modified the makefile to use PGI in place of gcc, and
>>> thus, the PGI-compiled openMPI.
>>> Thanks, Gerry
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