Greetings Mathieu:
Mathieu Gontier wrote:
[...]
So, I meet a little problem whatever the MPI library used (I tried with
MPICH-1.2.5.2, MPICHGM and IntelMPI).
When MorphMPI is linked statically with my parallel application,
everything is ok; but when MorphMPI is linked dynamically with my
parallel application, MPI_Get_count return a wrong value.
I concluded it is difficult to use a MPI library thought a shared
library. I wonder if someone have more information about it (in this
Not likely. I would suggest ldd. It is your friend.
For example:
[EMAIL PROTECTED]:~/workspace/source-mpi$ ldd matmul_mpi_3.exe
libm.so.6 => /lib/libm.so.6 (0x00002b5409d17000)
libmpi.so.0 => not found
libopen-rte.so.0 => not found
libopen-pal.so.0 => not found
librt.so.1 => /lib/librt.so.1 (0x00002b5409f99000)
libdl.so.2 => /lib/libdl.so.2 (0x00002b540a1a2000)
libnsl.so.1 => /lib/libnsl.so.1 (0x00002b540a3a6000)
libutil.so.1 => /lib/libutil.so.1 (0x00002b540a5c0000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00002b540a7c3000)
libc.so.6 => /lib/libc.so.6 (0x00002b540a9de000)
/lib64/ld-linux-x86-64.so.2 (0x00002b5409af9000)
Notice that libmpi.so.0 is not found, so I can't run this by hand.
Unless I force the issue using LD_LIBRARY_PATH
[EMAIL PROTECTED]:~/workspace/source-mpi$ export
LD_LIBRARY_PATH="/home/joe/local/lib64/:/home/joe/local/lib/"
[EMAIL PROTECTED]:~/workspace/source-mpi$ ldd matmul_mpi_3.exe
libm.so.6 => /lib/libm.so.6 (0x00002ae35ca50000)
libmpi.so.0 => /home/joe/local/lib/libmpi.so.0 (0x00002ae35ccd1000)
libopen-rte.so.0 => /home/joe/local/lib/libopen-rte.so.0
(0x00002ae35cfe8000)
libopen-pal.so.0 => /home/joe/local/lib/libopen-pal.so.0
(0x00002ae35d2b3000)
librt.so.1 => /lib/librt.so.1 (0x00002ae35d514000)
libdl.so.2 => /lib/libdl.so.2 (0x00002ae35d71d000)
libnsl.so.1 => /lib/libnsl.so.1 (0x00002ae35d921000)
libutil.so.1 => /lib/libutil.so.1 (0x00002ae35db3b000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00002ae35dd3e000)
libc.so.6 => /lib/libc.so.6 (0x00002ae35df59000)
/lib64/ld-linux-x86-64.so.2 (0x00002ae35c832000)
and it might even run ...
[EMAIL PROTECTED]:~/workspace/source-mpi$ ./matmul_mpi_3.exe
D[tid=0]: running on machine = pegasus-i
D: checking arguments: N_args=1
D: arg[0] = ./matmul_mpi_3.exe
Allocating memory ...
array size in MB = 7.629 MB
(remember, you have 2 of these)normalization a: 0.05510, b: 0.00173
0 : loop_min = 0, loop_max = 1000
...
Do you have some sort of LD_LIBRARY_PATH set up? Or something set in
/etc/ld.so.config that points to where these things are? Remember,
mpirun/mpiexec's alternative purpose in life is to set up the correct
run time environment for you, so you might want to see what is going on
with the environment in your equivalent command.
--
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: [EMAIL PROTECTED]
web : http://www.scalableinformatics.com
http://jackrabbit.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 866 888 3112
cell : +1 734 612 4615
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