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["matthieu verstraete" <matthieu.jean.verstraete@gmail.com>]

your number of kpoints is equal to mkmem, so your abinip is certainly not running on 2 processors...

try with mynodes=
growth1
growth1

for instance, or even better, using 2 machines so you can be sure both are being used

Are you sure of the syntax for mpiexec? I usually use mpirun (which has the syntax you give), and there may be a difference...

>Do you get any message in your log or output file related to this problem ?

Well, as you can see from the attached log and output files, there are
indications that the system is using only one cpu (e.g., only node 0 is
mentioned), but I cannot understand wh

the main log is only written to by the mother process. Check the other _LOG_ files. Again if they are not there you are not running in parallel... 

 

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I followed the run through top command for the 2' something of the run, and
I always saw ONLY ONE abinip running. The cpu time was identical with abinis.

In a short run, much of the time may be spent with only one processor running actively. You might try making the run a bit longer (increase ecut or nkpt or something). In top try "u" for user and then your user name, to see all of your processes (including inactive ones). You should have 2 or 4 abinip-s (the doubling can happen on some platforms due to the way the mpi works, but the other 2 don't do anything they just sit there -anyone know why this happens?)

good luck

Matthieu