[mpich-discuss] libmpi.so.12 error
Kenneth Raffenetti
raffenet at mcs.anl.gov
Tue Sep 9 06:08:13 CDT 2014
That looks like an error message from OpenMPI's mpiexec. That is surely
part of the problem here. Do you have an OpenMPI installation somewhere
that may be conflicting with your MPICH? One solution would be to make
sure that the path to MPICH's mpiexec is first in your environment.
Ken
On 09/09/2014 05:31 PM, Sophie Norman wrote:
> Hi Ken
>
> When I run that code I get the following error
>
> --------------------------------------------------------------------------
> mpiexec was unable to launch the specified application as it could not
> find an executable:
>
> Executable: -l
> Node: raspberrypi
>
> while attempting to start process rank 0.
> --------------------------------------------------------------------------
>
> Sophie
>
> On 9 September 2014 02:07, Kenneth Raffenetti <raffenet at mcs.anl.gov
> <mailto:raffenet at mcs.anl.gov>> wrote:
>
> 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>
> <mailto: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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