[mpich-discuss] libmpi.so.12 error

[Sophie Norman]

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> 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>> 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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