Update launch.sh

Appli-iso3dfd/launch.sh

 #!/bin/sh
 #SBATCH --time=270
 
-mpirun -np 2 -map-by ppr:1:socket -bind-to socket python3 ACO.py
\ No newline at end of file
+mpirun -np 16 -map-by ppr:1:socket -bind-to socket python3 ACO.py