FFTW
FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions.
To run this test with the Phoronix Test Suite, the basic command is: phoronix-test-suite benchmark fftw.
Project Site
fftw.orgTest Created
22 January 2015Last Updated
16 August 2017Test Maintainer
Michael LarabelTest Type
ProcessorAverage Install Time
2 Minutes, 41 SecondsAverage Run Time
5 Minutes, 57 SecondsTest Dependencies
C/C++ Compiler ToolchainAccolades
100k+ DownloadsSupported Platforms
** Data based on those opting to upload their test results to OpenBenchmarking.org and users enabling the opt-in anonymous statistics reporting while running benchmarks from an Internet-connected platform.
*** Test profile page view reporting began March 2021.
Data current as of 21 September 2021.
Suites Using This Test
Performance Metrics
Analyze Test Configuration:FFTW 3.3.6
Build: Float + SSE - Size: 2D FFT Size 4096
OpenBenchmarking.org metrics for this test profile configuration based on 1,124 public results since 16 August 2017 with the latest data as of 1 September 2021.
Below is an overview of the generalized performance for components where there is sufficient statistically significant data based upon user-uploaded results. It is important to keep in mind particularly in the Linux/open-source space there can be vastly different OS configurations, with this overview intended to offer just general guidance as to the performance expectations.
Based on OpenBenchmarking.org data, the selected test / test configuration (FFTW 3.3.6 - Build: Float + SSE - Size: 2D FFT Size 4096) has an average run-time of 17 minutes. By default this test profile is set to run at least 3 times but may increase if the standard deviation exceeds pre-defined defaults or other calculations deem additional runs necessary for greater statistical accuracy of the result.
Based on public OpenBenchmarking.org results, the selected test / test configuration has an average standard deviation of 1%.
Does It Scale Well With Increasing Cores?
No, based on the automated analysis of the collected public benchmark data, this test / test settings does not generally scale well with increasing CPU core counts. Data based on publicly available results for this test / test settings, separated by vendor, result divided by the reference CPU clock speed, grouped by matching physical CPU core count, and normalized against the smallest core count tested from each vendor for each CPU having a sufficient number of test samples and statistically significant data.
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