Hi Patrick, thanks for your reply,
I did what you said, it was ok, telling me the password has been saved in the register. Then I tried to run an other example, I got this error message (joint file).
I would like to ask 2 things
1. i don't find the discusion about the mpiexec... can you give me a link or something like that... please.
2. can we reset the mpiexec -register, because I think it is not the first time I "register" but I have forgoten what I type the first time , even if the computer seams to respond correctly this time, but, maybe it does affect this error message.
Bests
Josias