Memory Bound Programs

Here are the values I plotted in the graphs:

        Input Size              Wallclock time
           1000                    0.10
           2000                    0.14
           4000                    0.30
           8000                    0.62        
          16000                    1.43
          32000                    3.05
          64000                    6.19
         128000                   12.50
         256000                   28.19
         512000                   71.69
        1024000                  134.87
        2048000                14601.00