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| FFT multithreading http://forum.alglib.net/viewtopic.php?f=2&t=3957 |
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| Author: | alexeyp [ Thu May 30, 2019 1:27 am ] |
| Post subject: | FFT multithreading |
Hello, I'm new to AlgLib and trying to work with trial version. My biggest problem is to perform FFT as fast as I can. I've tried open source version, first. Then tried trial commercial version. To my surprise, I've got zero performance gain with commercial version. Here are my conditions: 1) Visual Studio C++ on Windows 64bit, /D "AE_MKL" /D "AE_OS=AE_WINDOWS" /D "AE_CPU=AE_INTEL", linked with 64bit MKL lib, and DLL is in the PATH. 2) Called alglib::setglobalthreading(alglib::parallel); With demo.exe example, the performance is 60Gflops, and with alglib::serial it's 21Gflops. So, the question is - can commercial version execute fftc1d() faster than open source version? |
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