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Nov 27th, 2015
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  1. OS X El Capitan
  2. Version 10.11.1
  3. 2.5 GHz Intel Core i7
  4.  
  5. It compiles and tests pass
  6.  
  7. n = 1024
  8. determining the best chunk size for float
  9. chunk size 8: 1.79362e-06
  10. chunk size 16: 1.2047e-06
  11. chunk size 32: 8.9248e-07
  12. chunk size 64: 8.75501e-07
  13. chunk size 128: 8.03145e-07
  14. chunk size 256: 7.86396e-07
  15. chunk size 512: 8.095e-07
  16. chunk size 1024: 8.11702e-07
  17. best chunk: 256
  18. best time: 7.86396e-07
  19. determining the best chunk size for double
  20. chunk size 8: 2.85154e-06
  21. chunk size 16: 1.96751e-06
  22. chunk size 32: 1.56653e-06
  23. chunk size 64: 1.45444e-06
  24. chunk size 128: 1.39046e-06
  25. chunk size 256: 1.36228e-06
  26. chunk size 512: 1.36404e-06
  27. chunk size 1024: 1.41038e-06
  28. best chunk: 256
  29. best time: 1.36228e-06
  30.  
  31. n = 1048576
  32. determining the best chunk size for float
  33. chunk size 8: 0.00325514
  34. chunk size 16: 0.00271703
  35. chunk size 32: 0.00242742
  36. chunk size 64: 0.00243483
  37. chunk size 128: 0.00232696
  38. chunk size 256: 0.00250278
  39. chunk size 512: 0.00257371
  40. chunk size 1024: 0.0023829
  41. chunk size 2048: 0.00240986
  42. chunk size 4096: 0.00241409
  43. chunk size 8192: 0.00240433
  44. chunk size 16384: 0.0029285
  45. chunk size 32768: 0.00300132
  46. chunk size 65536: 0.00297345
  47. chunk size 131072: 0.00355583
  48. chunk size 262144: 0.00359676
  49. chunk size 524288: 0.0035437
  50. chunk size 1048576: 0.00368355
  51. best chunk: 128
  52. best time: 0.00232696
  53. determining the best chunk size for double
  54. chunk size 8: 0.00637587
  55. chunk size 16: 0.00559267
  56. chunk size 32: 0.00522382
  57. chunk size 64: 0.00509907
  58. chunk size 128: 0.00514685
  59. chunk size 256: 0.0051234
  60. chunk size 512: 0.00519739
  61. chunk size 1024: 0.00531903
  62. chunk size 2048: 0.00519986
  63. chunk size 4096: 0.00518638
  64. chunk size 8192: 0.00620397
  65. chunk size 16384: 0.00630156
  66. chunk size 32768: 0.0064022
  67. chunk size 65536: 0.00747711
  68. chunk size 131072: 0.00747547
  69. chunk size 262144: 0.00812097
  70. chunk size 524288: 0.00709585
  71. chunk size 1048576: 0.00756092
  72. best chunk: 64
  73. best time: 0.00509907
  74.  
  75. n = 134217728
  76. determining the best chunk size for float
  77. chunk size 8: 0.85892
  78. chunk size 16: 0.741088
  79. chunk size 32: 0.72357
  80. chunk size 64: 0.702036
  81. chunk size 128: 0.810611
  82. chunk size 256: 0.690461
  83. chunk size 512: 0.704096
  84. chunk size 1024: 0.69697
  85. chunk size 2048: 0.704741
  86. chunk size 4096: 0.680848
  87. chunk size 8192: 0.958915
  88. chunk size 16384: 0.980547
  89. chunk size 32768: 0.92581
  90. chunk size 65536: 0.937667
  91. chunk size 131072: 1.01028
  92. chunk size 262144: 1.07185
  93. chunk size 524288: 1.02713
  94. chunk size 1048576: 0.971626
  95. chunk size 2097152: 1.27771
  96. chunk size 4194304: 1.24978
  97. chunk size 8388608: 1.295
  98. chunk size 16777216: 1.30972
  99. chunk size 33554432: 1.9705
  100. chunk size 67108864: 2.15063
  101. chunk size 134217728: 2.14277
  102. best chunk: 4096
  103. best time: 0.680848
  104. determining the best chunk size for double
  105. chunk size 8: 1.99447
  106. chunk size 16: 1.9398
  107. chunk size 32: 1.86005
  108. chunk size 64: 1.84294
  109. chunk size 128: 1.85347
  110. chunk size 256: 1.73935
  111. chunk size 512: 1.64415
  112. chunk size 1024: 1.93821
  113. chunk size 2048: 1.8731
  114. chunk size 4096: 1.8718
  115. chunk size 8192: 2.02042
  116. chunk size 16384: 2.04753
  117. chunk size 32768: 2.01371
  118. chunk size 65536: 2.24743
  119. chunk size 131072: 2.25438
  120. chunk size 262144: 2.26018
  121. chunk size 524288: 2.19561
  122. chunk size 1048576: 2.55358
  123. chunk size 2097152: 2.67674
  124. chunk size 4194304: 2.72736
  125. chunk size 8388608: 2.82054
  126. chunk size 16777216: 4.12533
  127. chunk size 33554432: 4.45193
  128. chunk size 67108864: 4.44635
  129. chunk size 134217728: 4.58125
  130. best chunk: 512
  131. best time: 1.64415
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