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path: root/unsupported/Eigen/CXX11/src/Tensor/TensorFFT.h
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* Eigen cost model part 1. This implements a basic recursive framework to ↵Gravatar Rasmus Munk Larsen2016-04-14
| | | | estimate the cost of evaluating tensor expressions.
* Relaxed the condition used to gate the fft code.Gravatar Benoit Steiner2016-03-31
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* Properly gate the fft codeGravatar Benoit Steiner2016-03-31
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* Use EIGEN_PI instead of redefining our own constant PIGravatar Benoit Steiner2016-03-05
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* Don't rely on the M_PI constant since not all compilers provide it.Gravatar Benoit Steiner2016-03-04
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* Don't use implicit type conversions in initializer lists since not all ↵Gravatar Benoit Steiner2016-03-04
| | | | compilers support them.
* Prevent unecessary Index to int conversionsGravatar Benoit Steiner2016-02-21
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* Get rid of duplicate code.Gravatar Rasmus Munk Larsen2016-02-19
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* Speed up tensor FFT by up ~25-50%.Gravatar Rasmus Munk Larsen2016-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Benchmark Base (ns) New (ns) Improvement ------------------------------------------------------------------ BM_tensor_fft_single_1D_cpu/8 132 134 -1.5% BM_tensor_fft_single_1D_cpu/9 1162 1229 -5.8% BM_tensor_fft_single_1D_cpu/16 199 195 +2.0% BM_tensor_fft_single_1D_cpu/17 2587 2267 +12.4% BM_tensor_fft_single_1D_cpu/32 373 341 +8.6% BM_tensor_fft_single_1D_cpu/33 5922 4879 +17.6% BM_tensor_fft_single_1D_cpu/64 797 675 +15.3% BM_tensor_fft_single_1D_cpu/65 13580 10481 +22.8% BM_tensor_fft_single_1D_cpu/128 1753 1375 +21.6% BM_tensor_fft_single_1D_cpu/129 31426 22789 +27.5% BM_tensor_fft_single_1D_cpu/256 4005 3008 +24.9% BM_tensor_fft_single_1D_cpu/257 70910 49549 +30.1% BM_tensor_fft_single_1D_cpu/512 8989 6524 +27.4% BM_tensor_fft_single_1D_cpu/513 165402 107751 +34.9% BM_tensor_fft_single_1D_cpu/999 198293 115909 +41.5% BM_tensor_fft_single_1D_cpu/1ki 21289 14143 +33.6% BM_tensor_fft_single_1D_cpu/1k 361980 233355 +35.5% BM_tensor_fft_double_1D_cpu/8 138 131 +5.1% BM_tensor_fft_double_1D_cpu/9 1253 1133 +9.6% BM_tensor_fft_double_1D_cpu/16 218 200 +8.3% BM_tensor_fft_double_1D_cpu/17 2770 2392 +13.6% BM_tensor_fft_double_1D_cpu/32 406 368 +9.4% BM_tensor_fft_double_1D_cpu/33 6418 5153 +19.7% BM_tensor_fft_double_1D_cpu/64 856 728 +15.0% BM_tensor_fft_double_1D_cpu/65 14666 11148 +24.0% BM_tensor_fft_double_1D_cpu/128 1913 1502 +21.5% BM_tensor_fft_double_1D_cpu/129 36414 24072 +33.9% BM_tensor_fft_double_1D_cpu/256 4226 3216 +23.9% BM_tensor_fft_double_1D_cpu/257 86638 52059 +39.9% BM_tensor_fft_double_1D_cpu/512 9397 6939 +26.2% BM_tensor_fft_double_1D_cpu/513 203208 114090 +43.9% BM_tensor_fft_double_1D_cpu/999 237841 125583 +47.2% BM_tensor_fft_double_1D_cpu/1ki 20921 15392 +26.4% BM_tensor_fft_double_1D_cpu/1k 455183 250763 +44.9% BM_tensor_fft_single_2D_cpu/8 1051 1005 +4.4% BM_tensor_fft_single_2D_cpu/9 16784 14837 +11.6% BM_tensor_fft_single_2D_cpu/16 4074 3772 +7.4% BM_tensor_fft_single_2D_cpu/17 75802 63884 +15.7% BM_tensor_fft_single_2D_cpu/32 20580 16931 +17.7% BM_tensor_fft_single_2D_cpu/33 345798 278579 +19.4% BM_tensor_fft_single_2D_cpu/64 97548 81237 +16.7% BM_tensor_fft_single_2D_cpu/65 1592701 1227048 +23.0% BM_tensor_fft_single_2D_cpu/128 472318 384303 +18.6% BM_tensor_fft_single_2D_cpu/129 7038351 5445308 +22.6% BM_tensor_fft_single_2D_cpu/256 2309474 1850969 +19.9% BM_tensor_fft_single_2D_cpu/257 31849182 23797538 +25.3% BM_tensor_fft_single_2D_cpu/512 10395194 8077499 +22.3% BM_tensor_fft_single_2D_cpu/513 144053843 104242541 +27.6% BM_tensor_fft_single_2D_cpu/999 279885833 208389718 +25.5% BM_tensor_fft_single_2D_cpu/1ki 45967677 36070985 +21.5% BM_tensor_fft_single_2D_cpu/1k 619727095 456489500 +26.3% BM_tensor_fft_double_2D_cpu/8 1110 1016 +8.5% BM_tensor_fft_double_2D_cpu/9 17957 15768 +12.2% BM_tensor_fft_double_2D_cpu/16 4558 4000 +12.2% BM_tensor_fft_double_2D_cpu/17 79237 66901 +15.6% BM_tensor_fft_double_2D_cpu/32 21494 17699 +17.7% BM_tensor_fft_double_2D_cpu/33 357962 290357 +18.9% BM_tensor_fft_double_2D_cpu/64 105179 87435 +16.9% BM_tensor_fft_double_2D_cpu/65 1617143 1288006 +20.4% BM_tensor_fft_double_2D_cpu/128 512848 419397 +18.2% BM_tensor_fft_double_2D_cpu/129 7271322 5636884 +22.5% BM_tensor_fft_double_2D_cpu/256 2415529 1922032 +20.4% BM_tensor_fft_double_2D_cpu/257 32517952 24462177 +24.8% BM_tensor_fft_double_2D_cpu/512 10724898 8287617 +22.7% BM_tensor_fft_double_2D_cpu/513 146007419 108603266 +25.6% BM_tensor_fft_double_2D_cpu/999 296351330 221885776 +25.1% BM_tensor_fft_double_2D_cpu/1ki 59334166 48357539 +18.5% BM_tensor_fft_double_2D_cpu/1k 666660132 483840349 +27.4%
* Avoid unecessary type conversionsGravatar Benoit Steiner2016-02-05
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* Record whether the underlying tensor storage can be accessed directly during ↵Gravatar Benoit Steiner2016-01-19
| | | | the evaluation of an expression.
* Consistently use the same index type in the fft codebase.Gravatar Benoit Steiner2015-10-29
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* Silenced a few more compilation warningsGravatar Benoit Steiner2015-10-29
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* Fixed compilation warningGravatar Benoit Steiner2015-10-26
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* Reordered the code of fft constructor to prevent compilation warningsGravatar Benoit Steiner2015-10-23
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* Added support for fourier transforms (code courtesy of thucjw@gmail.com)Gravatar Benoit Steiner2015-10-22
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