I installed OpenMPI (I have a simple dual core AMD notebook with Fedora 16) via:
# yum install openmpi # yum install openmpi-devel # mpirun --version mpirun (Open MPI) 1.5.4 I added: $ PATH=PATH=/usr/lib/openmpi/bin/:$PATH $ LD_LIBRARY_PATH=/usr/lib/openmpi/lib/ Then: $ mpif90 ex1.f95 $ mpiexec -n 4 ./a.out ./a.out: error while loading shared libraries: libmpi_f90.so.1: cannot open shared object file: No such file or directory ./a.out: error while loading shared libraries: libmpi_f90.so.1: cannot open shared object file: No such file or directory ./a.out: error while loading shared libraries: libmpi_f90.so.1: cannot open shared object file: No such file or directory ./a.out: error while loading shared libraries: libmpi_f90.so.1: cannot open shared object file: No such file or directory -------------------------------------------------------------------------- mpiexec noticed that the job aborted, but has no info as to the process that caused that situation. -------------------------------------------------------------------------- ls -l /usr/lib/openmpi/lib/ total 6788 lrwxrwxrwx. 1 root root 25 Sep 15 12:25 libmca_common_sm.so -> libmca_common_sm.so.2.0.0 lrwxrwxrwx. 1 root root 25 Sep 14 16:14 libmca_common_sm.so.2 -> libmca_common_sm.so.2.0.0 -rwxr-xr-x. 1 root root 8492 Jan 20 2012 libmca_common_sm.so.2.0.0 lrwxrwxrwx. 1 root root 19 Sep 15 12:25 libmpi_cxx.so -> libmpi_cxx.so.1.0.1 lrwxrwxrwx. 1 root root 19 Sep 14 16:14 libmpi_cxx.so.1 -> libmpi_cxx.so.1.0.1 -rwxr-xr-x. 1 root root 87604 Jan 20 2012 libmpi_cxx.so.1.0.1 lrwxrwxrwx. 1 root root 19 Sep 15 12:25 libmpi_f77.so -> libmpi_f77.so.1.0.2 lrwxrwxrwx. 1 root root 19 Sep 14 16:14 libmpi_f77.so.1 -> libmpi_f77.so.1.0.2 -rwxr-xr-x. 1 root root 179912 Jan 20 2012 libmpi_f77.so.1.0.2 lrwxrwxrwx. 1 root root 19 Sep 15 12:25 libmpi_f90.so -> libmpi_f90.so.1.1.0 lrwxrwxrwx. 1 root root 19 Sep 14 16:14 libmpi_f90.so.1 -> libmpi_f90.so.1.1.0 -rwxr-xr-x. 1 root root 10364 Jan 20 2012 libmpi_f90.so.1.1.0 lrwxrwxrwx. 1 root root 15 Sep 15 12:25 libmpi.so -> libmpi.so.1.0.2 lrwxrwxrwx. 1 root root 15 Sep 14 16:14 libmpi.so.1 -> libmpi.so.1.0.2 -rwxr-xr-x. 1 root root 1383444 Jan 20 2012 libmpi.so.1.0.2 lrwxrwxrwx. 1 root root 21 Sep 15 12:25 libompitrace.so -> libompitrace.so.0.0.0 lrwxrwxrwx. 1 root root 21 Sep 14 16:14 libompitrace.so.0 -> libompitrace.so.0.0.0 -rwxr-xr-x. 1 root root 13572 Jan 20 2012 libompitrace.so.0.0.0 lrwxrwxrwx. 1 root root 20 Sep 15 12:25 libopen-pal.so -> libopen-pal.so.3.0.0 lrwxrwxrwx. 1 root root 20 Sep 14 16:14 libopen-pal.so.3 -> libopen-pal.so.3.0.0 -rwxr-xr-x. 1 root root 386324 Jan 20 2012 libopen-pal.so.3.0.0 lrwxrwxrwx. 1 root root 20 Sep 15 12:25 libopen-rte.so -> libopen-rte.so.3.0.0 lrwxrwxrwx. 1 root root 20 Sep 14 16:14 libopen-rte.so.3 -> libopen-rte.so.3.0.0 -rwxr-xr-x. 1 root root 790052 Jan 20 2012 libopen-rte.so.3.0.0 -rw-r--r--. 1 root root 301520 Jan 20 2012 libotf.a lrwxrwxrwx. 1 root root 15 Sep 15 12:25 libotf.so -> libotf.so.0.0.1 lrwxrwxrwx. 1 root root 15 Sep 14 16:14 libotf.so.0 -> libotf.so.0.0.1 -rwxr-xr-x. 1 root root 206384 Jan 20 2012 libotf.so.0.0.1 -rw-r--r--. 1 root root 337970 Jan 20 2012 libvt.a -rw-r--r--. 1 root root 591070 Jan 20 2012 libvt-hyb.a lrwxrwxrwx. 1 root root 18 Sep 15 12:25 libvt-hyb.so -> libvt-hyb.so.0.0.0 lrwxrwxrwx. 1 root root 18 Sep 14 16:14 libvt-hyb.so.0 -> libvt-hyb.so.0.0.0 -rwxr-xr-x. 1 root root 428844 Jan 20 2012 libvt-hyb.so.0.0.0 -rw-r--r--. 1 root root 541004 Jan 20 2012 libvt-mpi.a lrwxrwxrwx. 1 root root 18 Sep 15 12:25 libvt-mpi.so -> libvt-mpi.so.0.0.0 lrwxrwxrwx. 1 root root 18 Sep 14 16:14 libvt-mpi.so.0 -> libvt-mpi.so.0.0.0 -rwxr-xr-x. 1 root root 396352 Jan 20 2012 libvt-mpi.so.0.0.0 -rw-r--r--. 1 root root 372352 Jan 20 2012 libvt-mt.a lrwxrwxrwx. 1 root root 17 Sep 15 12:25 libvt-mt.so -> libvt-mt.so.0.0.0 lrwxrwxrwx. 1 root root 17 Sep 14 16:14 libvt-mt.so.0 -> libvt-mt.so.0.0.0 -rwxr-xr-x. 1 root root 266104 Jan 20 2012 libvt-mt.so.0.0.0 -rw-r--r--. 1 root root 60390 Jan 20 2012 libvt-pomp.a lrwxrwxrwx. 1 root root 14 Sep 15 12:25 libvt.so -> libvt.so.0.0.0 lrwxrwxrwx. 1 root root 14 Sep 14 16:14 libvt.so.0 -> libvt.so.0.0.0 -rwxr-xr-x. 1 root root 242604 Jan 20 2012 libvt.so.0.0.0 -rwxr-xr-x. 1 root root 303591 Jan 20 2012 mpi.mod drwxr-xr-x. 2 root root 4096 Sep 14 16:14 openmpi The file (actually, a link) it claims it can't find: libmpi_f90.so.1, is clearly there. And LD_LIBRARY_PATH=/usr/lib/openmpi/lib/. What's the problem? ---John