hump_trap
     1    0.3212981744421901          29
     2     16.16064908722109       13.17
     4     16.17515212981744       13.15
     8     30.06323338261111      -0.737
    16     28.91205380707739      0.4142
    32     29.30623828354212     0.01998
    64      29.3209883234896    0.005225
   128     29.32490602380704    0.001308
   256     29.32588676924805    0.000327
   512      29.3261320399746   8.176e-05
  1024       29.326193362935   2.044e-05
quit