Hi all,
I am completely new to MPI (and relatively new to linux). I am sorry if the problem I encountered is obvious to solve. When I run the following simple test with mpirun: *program hello_world use mpi integer ierr call MPI_INIT ( ierr ) print *, "Hello world" call MPI_FINALIZE ( ierr )end program hello_world* I get the following error : *./test: symbol lookup error: /usr/lib/libmpi_mpifh.so.12: undefined symbol: mpi_fortran_weights_empty* I compiled the source code like this: mpifort -o test test.f90 I look up on the internet and I understand that it is a problem with the shared library of open mpi. But I think I correctly added the open mpi lib to ld_library_path (I added the first directory -- /usr/lib/openmpi/lib -- via .bashrc). Here is an echo $LD_LIBRARY_PATH: *$/usr/lib/openmpi/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/compiler/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/mpi/intel64/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/mpi/mic/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/ipp/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/compiler/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/mkl/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/tbb/lib/intel64/gcc4.4:/opt/intel/debugger_2016/libipt/intel64/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/daal/lib/intel64_lin:/opt/intel/compilers_and_libraries_2016.1.150/linux/daal/../compiler/lib/intel64_lin:/opt/intel/compilers_and_libraries_2016.1.150/linux/compiler/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/mpi/intel64/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/mpi/mic/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/ipp/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/compiler/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/mkl/lib/intel64:/opt/intel/compilers_and_libraries_2016.1.150/linux/tbb/lib/intel64/gcc4.4:/opt/intel/debugger_2016/libipt/intel64/lib:/opt/intel/compilers_and_libraries_2016.1.150/linux/daal/lib/intel64_lin:/opt/intel/compilers_and_libraries_2016.1.150/linux/daal/../tbb/lib/intel64_lin/gcc4.4:/opt/intel/compilers_and_libraries_2016.1.150/linux/daal/../compiler/lib/intel64_lin* The path that my system uses at run time (/usr/lib/) is not in the library path. I thus don't know why this path is used. I would be thankful if anyone could help me with this issue. Best, Julien de Troullioud de Lanversin
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