On Jun 24, 2016, at 4:39 PM, Richard C. Wagner <drsav...@q.com> wrote: > > Then I try to compile the library file in 32-bit mode. The first command is: > > mpicc -fPIC -m32 -c libtest.c > > Then the second is: > > mpicc -shared -m32 -o libmpi.so libtest.o > > As you can see below, compiling the object file works. But the second > command, linking libtest.o and writing the shared library, fails. Can you > see what's wrong? > > rwagner@tuxcfd10:~/engrhome/CSU/LibTests$ mpicc -fPIC -m32 -c libtest.c > rwagner@tuxcfd10:~/engrhome/CSU/LibTests$ mpicc -shared -m32 -o libmpi.so > libtest.o > /usr/bin/ld: skipping incompatible /usr//lib/libmpi.so when searching for > -lmpi > /usr/bin/ld: skipping incompatible /usr/lib/openmpi/lib/libmpi.so when > searching for -lmpi > /usr/bin/ld: skipping incompatible > /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../libmpi.so when searching for -lmpi > /usr/bin/ld: skipping incompatible //usr/lib/libmpi.so when searching for > -lmpi > /usr/bin/ld: cannot find -lmpi > /usr/bin/ld: cannot find -lhwloc > collect2: error: ld returned 1 exit status > > And for added info, these two commands succeed when I don't use the -m32 > switch. The library comes out as you'd expect it to, but as a 64-bit version.
That means that the Open MPI installed in /usr/lib and /usr/lib/openmpi is a 64 bit version. You need to install a 32 bit version of Open MPI, and compile/link against that one. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
