Results of parallel dot-product (n = 210000)

esp3:ce107/work/SP2-tutorial% mpirun -np 1 dot1
 dotprod achieves  46.7981102432393286  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  48.4022048409234742  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 2 dot2
 dotprod achieves  101.982099670742713  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  102.166295502118103  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 3 dot3
 dotprod achieves  131.179998125995553  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  134.201062427607127  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 4 dot4
 dotprod achieves  171.798757728405974  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  173.109444585267880  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 5 dot5
 dotprod achieves  195.892771772717197  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  200.229310780467131  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 6 dot6
 dotprod achieves  242.191608617428614  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  243.555336484096330  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 7 dot7
 dotprod achieves  246.445745133418399  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  251.639555435726862  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 8 dot8
 dotprod achieves  283.085913409205034  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  284.097919315998809  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 10 dot10
 dotprod achieves  324.722245846251383  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  325.636155003178715  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 12 dot12
 dotprod achieves  328.048613796039206  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  334.847325201307456  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 14 dot14
 dotprod achieves  365.153016866631845  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  365.295933898673638  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 16 dot16
 dotprod achieves  364.056290170890122  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  355.696234692322037  Mflop/s
 the dot product is  1543522050070000.00

esp3:ce107/work/SP2-tutorial% mpirun -np 20 dot20
 dotprod achieves  392.291454564135108  Mflop/s
 the dot product is  1543522050070000.00
 blas_dotprod achieves  365.157778965992350  Mflop/s
 the dot product is  1543522050070000.00