host process
grid size = (  8)
process grid size = (  4)
 
initial values:
 
      1.00      2.00      3.00      4.00      5.00      6.00      7.00      8.00
 
new values:
 
      2.00      4.00      6.00      8.00     10.00     12.00     14.00     16.00
 
