That's what's supposed to happen, it's how MPI works. Process 0 is the head or boss process, and the others are slaves, and execute partially different code even though they're in the same executable. MPI is multi-process, not multi-thread.

Damien

Henry Adolfo Lambis Miranda wrote:
Hi everybody out there.....

This is my first post to the mail list.
I have installed openmp 1.2.4 over a x_64 AMD double processor with SuSE
linux.
In principal, the instalation was succefull, with ifort 10.X.
But when i run any code ( mpirun -np 2 a.out), instead of share the
calcules between the two
processor, the system duplicate the executable and send one to each
processor.


i don“t know what the h$%& is going on......



regards..

Henry


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