ncp     rms     time (s)
9       1.6e-5  1.46
17      2.3e-6  5.21
25      1.3e-6  9.78
33      1.0e-6  2.88
49      9.7e-7  1.82
65      8.6e-7  0.85
129     9.2e-7  1.24
257     8.3e-7  3.67
513     error   59.06
