Hi,
since I’m new to almost anything related with Palabos I chose Windows as operating system because I don’t want to be new to the OS as well. 
Now I have a similar problem like Marc85 here:
http://www.lbmethod.org/forum/read.php?4,3545
I installed openmpi and replaced the compiler in codeblocks by the binaries of mpicc for C and mpicxx for C++ provided by openmpi. Then I compiled the codeblocks project for the cavity2D showcase and run it with mpiexec -n 8 palabos but all I get are 8 processes all running the same calculation. The memory the processes take is the same as when it’s executed on a single processor.
Is there anything I missed?
Cheers,
Tobias