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- OS X: 10.11.1
- CPU: 2.5GHz, Core i5
- Memory: 8GB 1.6GHz DDR3
- alapshin-mac01:fht alapshin$ ./best_chunk
- n = 1024
- determining the best chunk size for float
- chunk size 8: 2.98449e-06
- chunk size 16: 2.18922e-06
- chunk size 32: 1.93366e-06
- chunk size 64: 1.44718e-06
- chunk size 128: 1.35512e-06
- chunk size 256: 1.26499e-06
- chunk size 512: 1.49559e-06
- chunk size 1024: 1.47167e-06
- best chunk: 256
- best time: 1.26499e-06
- determining the best chunk size for double
- chunk size 8: 4.80382e-06
- chunk size 16: 3.44928e-06
- chunk size 32: 2.8098e-06
- chunk size 64: 2.5154e-06
- chunk size 128: 2.50776e-06
- chunk size 256: 2.41054e-06
- chunk size 512: 2.62534e-06
- chunk size 1024: 3.21732e-06
- best chunk: 256
- best time: 2.41054e-06
- alapshin-mac01:fht alapshin$ ./best_chunk
- n = 1048576
- determining the best chunk size for float
- chunk size 8: 0.0052721
- chunk size 16: 0.00460184
- chunk size 32: 0.00412521
- chunk size 64: 0.00392777
- chunk size 128: 0.00388306
- chunk size 256: 0.00374796
- chunk size 512: 0.00372925
- chunk size 1024: 0.00367988
- chunk size 2048: 0.00374349
- chunk size 4096: 0.00365184
- chunk size 8192: 0.00365362
- chunk size 16384: 0.00397553
- chunk size 32768: 0.00398257
- chunk size 65536: 0.00401215
- chunk size 131072: 0.00477495
- chunk size 262144: 0.00472972
- chunk size 524288: 0.00556068
- chunk size 1048576: 0.00697815
- best chunk: 4096
- best time: 0.00365184
- determining the best chunk size for double
- chunk size 8: 0.0120122
- chunk size 16: 0.0117117
- chunk size 32: 0.0106232
- chunk size 64: 0.00823108
- chunk size 128: 0.0104003
- chunk size 256: 0.0129262
- chunk size 512: 0.0108543
- chunk size 1024: 0.010042
- chunk size 2048: 0.00826658
- chunk size 4096: 0.0103338
- chunk size 8192: 0.0126936
- chunk size 16384: 0.0119177
- chunk size 32768: 0.0118117
- chunk size 65536: 0.0141049
- chunk size 131072: 0.0137541
- chunk size 262144: 0.0116724
- chunk size 524288: 0.0151775
- chunk size 1048576: 0.0191973
- best chunk: 64
- best time: 0.00823108
- alapshin-mac01:fht alapshin$ ./best_chunk
- n = 134217728
- determining the best chunk size for float
- chunk size 8: 1.13889
- chunk size 16: 1.17429
- chunk size 32: 1.04529
- chunk size 64: 1.07924
- chunk size 128: 1.23988
- chunk size 256: 1.10311
- chunk size 512: 1.19277
- chunk size 1024: 0.974134
- chunk size 2048: 0.996661
- chunk size 4096: 1.02951
- chunk size 8192: 1.10347
- chunk size 16384: 1.25038
- chunk size 32768: 1.11496
- chunk size 65536: 1.0928
- chunk size 131072: 1.18189
- chunk size 262144: 1.74876
- chunk size 524288: 1.28446
- chunk size 1048576: 1.72713
- chunk size 2097152: 1.73966
- chunk size 4194304: 1.69146
- chunk size 8388608: 1.718
- chunk size 16777216: 1.70403
- chunk size 33554432: 1.68941
- chunk size 67108864: 1.7445
- chunk size 134217728: 1.68777
- best chunk: 1024
- best time: 0.974134
- determining the best chunk size for double
- chunk size 8: 2.49385
- chunk size 16: 2.37031
- chunk size 32: 2.28917
- chunk size 64: 2.08369
- chunk size 128: 2.35927
- chunk size 256: 1.99829
- chunk size 512: 2.19791
- chunk size 1024: 2.25046
- chunk size 2048: 2.13174
- chunk size 4096: 2.36632
- chunk size 8192: 2.36098
- chunk size 16384: 2.10002
- chunk size 32768: 2.07618
- chunk size 65536: 2.65744
- chunk size 131072: 2.2649
- chunk size 262144: 2.95573
- chunk size 524288: 2.89051
- chunk size 1048576: 3.55339
- chunk size 2097152: 3.97051
- chunk size 4194304: 3.94344
- chunk size 8388608: 3.28527
- chunk size 16777216: 3.78259
- chunk size 33554432: 4.14752
- chunk size 67108864: 3.84806
- chunk size 134217728: 3.55188
- best chunk: 256
- best time: 1.99829
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