#Pressure convergence=1e-9 and 330 iterations (0.5ms of physical time)
#cores		wall_clock[s]	wall_clock[s]/iteration 	Parallel Efficiency [%]		Cells/cores
  48		19003.5		57.59								349525
  96		 9740.3		29.52				98				174763
 192		 4952.0		15.01				96				 87381
 384		 2514.8		 7.62				94				 43691
 768		 1272.5		 3.85				93				 21845
1536		  652.4 	 1.98				91				 10923
3072		  352.0		 1.07				84				  5461
6144		  232.4		 0.70				64				  2731