[mpich-discuss] libmpi.so.12 error

[Kenneth Raffenetti]

Let's try to verify that the library is properly located on all the 
nodes you are running. We can do a simple test with mpiexec. Try running:

   mpiexec -n 4 -machinefile /home/pi/mpi_testing/__machinefile -l ls 
/home/rpimpi/mpich3-install/lib/libmpi.so.12

Ken

On 09/08/2014 07:03 PM, Sophie Norman wrote:
> Hi Ken,
> Yes I used mpicc to build the binary
>
> the oputput of mpicc -show is
>
> gcc -I/home/rpimpi/mpich3-install/include
> -L/home/rpimpi/mpich3-install/lib -Wl,-rpath
> -Wl,/home/rpimpi/mpich3-install/lib -Wl,--enable-new-dtags -lmpi -lrt
> -lpthread
>
>
> Sophie
>
> On 9 September 2014 00:48, Kenneth Raffenetti <raffenet at mcs.anl.gov
> <mailto:raffenet at mcs.anl.gov>> wrote:
>
>     Did you use mpicc to build your binary? What is the output of 'mpicc
>     -show'. The compile wrappers should encode an RPATH tag in your
>     program so that setting an LD_LIBRARY_PATH to find libmpi.so is
>     unncessary.
>
>     Ken
>
>
>     On 09/08/2014 06:44 PM, Sophie Norman wrote:
>
>         Hi,
>
>         When running NAS parallel benchmarks using 4 Raspberry Pi nodes each
>         running MPICH-3.1.2 I get the following error when I try to run the
>         integer sort benchmark
>
>         ~/NPB3.3/NPB3.3-MPI/bin $ mpiexec -n 4 -machinefile
>         /home/pi/mpi_testing/__machinefile ./is.S.4
>
>
>            NAS Parallel Benchmarks 3.3 -- IS Benchmark
>
>            Size:  65536  (class S)
>            Iterations:   10
>            Number of processes:     1
>
>            ERROR: compiled for 4 processes
>            Number of active processes: 1
>            Exiting program!
>
>         ./is.S.4: error while loading shared libraries: libmpi.so.12: cannot
>         open shared object file: No such file or directory
>         ./is.S.4: error while loading shared libraries: libmpi.so.12: cannot
>         open shared object file: No such file or directory
>         ./is.S.4: error while loading shared libraries: libmpi.so.12: cannot
>         open shared object file: No such file or directory
>
>
>
>         I have tried
>         export
>         LD_LIBRARY_PATH=$LD_LIBRARY___PATH:/home/rpimpi/mpich3-__install/lib
>         on each of the nodes, and each node works individually when run with
>            the file ./is.S.1
>
>         $ldd ./is.S.4 give the following output for the master node
>
>         /usr/lib/arm-linux-gnueabihf/__libcofi_rpi.so (0xb6edf000)
>         libmpi.so.12 => /home/rpimpi/mpich3-install/__lib/libmpi.so.12
>         (0xb6ca3000)
>         libc.so.6 => /lib/arm-linux-gnueabihf/libc.__so.6 (0xb6b68000)
>         librt.so.1 => /lib/arm-linux-gnueabihf/__librt.so.1 (0xb6b59000)
>         libpthread.so.0 => /lib/arm-linux-gnueabihf/__libpthread.so.0
>         (0xb6b3a000)
>         libgfortran.so.3 => /usr/lib/arm-linux-gnueabihf/__libgfortran.so.3
>         (0xb6a93000)
>         libm.so.6 => /lib/arm-linux-gnueabihf/libm.__so.6 (0xb6a22000)
>         libgcc_s.so.1 => /lib/arm-linux-gnueabihf/__libgcc_s.so.1
>         (0xb69fa000)
>         /lib/ld-linux-armhf.so.3 (0xb6eed000)
>
>
>         please help
>
>         Thanks
>
>         Sophie
>
>
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