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" <d...@lanl.gov> 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 >> >> >> >> >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
