Hi Miguel

 

Two comments on your comments:

 

1. Defining LD_LIBRARY_PATH should not be necessary in my case because the libraries are in /usr/local/lib, a standard place for ld to look for shared libs. I did not define PATH either and Linux is able to find the executable MPI binaries in /usr/local/bin because it is a standard location for Linux.

 

2. I defined LD_LIBRARY_PATH (regardless of whether it should be necessary) manually, like this:

 

bash: export LD_LIBRARY_PATH=/usr/local/lib

 

If this would have worked, I could have added this to my .bashrc

 

Again, any help is deeply appreciated.

 

Thanks

Durga

 

On 8/28/06, Miguel Figueiredo Mascarenhas Sousa Filipe <miguel.filipe@gmail.com> wrote:

Hi there,

On 8/27/06, Durga Choudhury < dpchoudh@gmail.com> wrote:

Hi all

 

I am getting an error (details follow) in the simplest of the possible test scenarios:

 

Two identical regular Dell PCs connected back-to-back via an ethernet switch on the 10/100 ethernet. Both run Fedora Core 4. Identical version (1.1) of Open MPI is compiled and installed on both of them *without* a --prefix option ( i.e. installed on the default location of /usr/local).

 

The hostfile on both the machine is the same:

 

cat ~/hostfile

 

192.168.22.29

192.168.22.103

 

I can run openMPI on either of these two machines by forking two processes:

 

mpirun -np2 osu_acc_latency  <------ This runs fine on either of the two machines.

 

However, when I try to luch the same program across the two machines, I get an error:

 

mpirun --hostfile ~/hostfile -np2 /home/durga/openmpi-1.1/osu_benchmarks/osu_acc_latency

 

durga@192.168.22.29's password: foobar

/home/durga/openmpi-1.1/osu_benchmarks/osu_acc_latency: error while loading shared libraries: libmpi.so.0: cannot open shared object file: No such file or directory.

 

However, the file *does exist* in /usr/local/lib:

 

ls -l /usr/local/lib/libmpi.so.0

libmpi.so.0 -> libmpi.so.0.0.0

 

I have also tried adding /usr/local/lib to my LD_LIBRARY_PATH on *both* machines, to no avail.

first of: I'm not from the  openMPI team.
Where did you add your LD_LIBRARY_PATH ?
make shure it is in one of the profile files for your shell.. such has: .bash_profile and _not_ .bashrc

that's a tipical error in these kind of configurations..

best regards
 

Any help is greatly appreciated.

 

Thanks

 

Durga

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Miguel Sousa Filipe

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