All Articles Tagged FFT
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| Performance comparison for Convolution - Direct vs FFT vs Auto[Forums] Hi,This is regarding the comparison of Direct Mode vs FFT mode for Multi-dimensional convolutions in terms of performance. My expectation was that the FFT mode should be faster than direct mode, but it... Posted: 2012-04-10 13:28:52 | convolution, FFT, MKL 10.3 |
| FFT[Forums] Hello I have two matrixs: 1- 8*8 block with a cross:0 0 0 1 0 0 0 00 0 0 1 0 0 0 00 0 0 1 0 0 0 01 1 1 1 1 1 1 10 0 0 1 0 0 0 00 0 0 1 0 0 0 00 0 0 1 0 0 0 00 0 0 1 0 0 0 02- bigger BW image, assume... Posted: 2011-04-06 04:46:55 | FFT |
| Problems with ippsFFTInv_CToC[Forums] Hi,I observe a very strange behaviour of ippsFFTInv_CToC: the results are multiplied by the FFT length even if IPP_FFT_NODIV_BY_ANY is used as a flag for FFTSpec allocation.Below is my example code,... Posted: 2011-03-07 07:39:48 | FFT |
| C# wrapper examples not working... need help pls[Forums] I'm attempting to run the C# wrapper examples on my machine, Windows-7 VS 2010 installed. I need to eventually integrate a good FFT library into my product and this one was recommended, but I can't... Posted: 2010-12-27 12:24:04 | c#, FFT |
| How to install FFTW3 for FORTRAN (Windows) ?[Forums] Hi everybody,I have some trouble with the installation of FFTW3 on Windows. I did what they said (http://www.fftw.org/install/windows.html) but it not working. Where should I put the DLLs or Lib files?... Posted: 2010-10-15 11:03:55 | FFT, FFTW, FFTW3 |
| Intel's Ct Technology Code Samples[Knowledgebase] Overview To help jumpstart your application development, we provide code samples that illustrate the use of Intel’s Ct Technology in various workloads including those often used for financial services,... Posted: 2010-04-06 21:00:00 by AmandaS (Intel) | binomial tree, black scholes, BLAS, convolution, example, example code, FFT, fftw3, graphics, histogram, image processing, IPP, lapack, medical imaging, MKL, monte carlo, poisson, random number generator, ray tracing, sample, sample code |
| Intel® IPP Library Signal Processing Domain Overview[Knowledgebase] If the images below are not loading, or are loading too slowly, please download and review this presentation in PDF format by following this link: IPP-Signal-Processing-Overview-2010-q1.pdf. An overview... Posted: 2010-03-24 09:00:00 by Paul Fischer (Intel) | convolution, DFT, digital filters, discrete cosine transform, fast fourier transform, FFT, FIR filters, IIR filters, IPP, signal processing, simd, SSE |
| Performance and Portability Benefits of Ct[Knowledgebase] PerformanceIntel Ct is scalable to large problems. The runtime manages data to directly address memory bottlenecks. Furthermore, the Intel Ct runtime compilation process eliminates modularity overhead.... Posted: 2010-03-02 00:00:00 by Noah Clemons (Intel) | Architecture, BLAS, compilation, compiler, FFT, fusion, IPP, lapack, memory bottlenecks, MKL, modularity, runtime, scalability, simd-ization, TBB, Vectorization |
| Intel® MKL FFT Training Material[Knowledgebase] This article contains a training material (in PDF format) on Intel® MKL Fast Fourier Transforms (FFT) which includes details of MKL DFTI API, example code and parallelization. Posted: 2010-02-15 10:30:00 by Vipin Kumar E K (Intel) | FFT, MKL FFT usage |
| MKL FFT performance – comparison of local and distributed-memory implementations[Knowledgebase] Fast Fourier Transform (FFT) is widely used in many applications (e.g. DSP, PDE, etc.). Its performance is subject to a number of factors: hardware - number of cores, their clock rate, and the speed... Posted: 2009-12-11 00:00:00 by Vladimir Petrov (Intel) | FFT, intel mkl |
| FFT interfaces in Intel® MKL[Knowledgebase] Dear all,In this note I would like to remove some confusion about FFT interfaces supported by Intel® MKL. Firstly, some history. The library has been providing Discrete Fourier Transforms Interface... Posted: 2009-10-20 00:00:00 by Dmitry Baksheev (Intel) | DFT, DFTI, FFT, fftw, fftw3 |
| MKL FFT Cluster: real DFTI_BAD_DESCRIPTOR problem or internal MPI fault?[Forums] Hi all, I have a problem with MKL FFT Cluster routines. I have followed the code example "1D In-place Cluster FFT Computations" and I have tried to run a simple parallel job on two different clusters equipped... Posted: 2009-09-08 13:14:58 | FFT |
| Intel MKL team needs your feedback on the FFTs[Forums] The FFTW3 interface is now integrated directly into the Intel MKL core library in version 10.2, see the article Intel® MKL Core Libraries Now Contain FFTW3 Interfaces for details. Please let us know... Posted: 2009-08-13 21:22:56 | FFT, fftw, fftw3 |
| Intel® MKL Threaded 1D FFTs[Knowledgebase] In Intel MKL 10.2, one-dimensional complex-to-complex fast Fourier transforms (FFTs) are now threaded for non-prime sizes from 216 and larger with the following exception: if at least one prime factor... Posted: 2009-07-16 00:00:00 by Dmitry Baksheev (Intel) | FFT, fourier transform, multi-core, Multi-threading, multicore, multithread, threading |
| Using FFTW Wrapper - fftw_plan_many_dft[Forums] I was hoping someone could shed some light...I have inherited an application which originally uses FFTW and has been compiled to work with MKL.There are calls to fftw_plan_many_dft, and I am having difficultly... Posted: 2009-07-07 10:38:39 | 1D, FFT, fftw, fftw3, fftw_plan_many_dft, wrapper |
| Intel® MKL Core Libraries Now Contain FFTW3 Interfaces[Knowledgebase] Intel® MKL 10.2 and later provides FFTW3 interfaces to enable applications using FFTW to gain performance with Intel MKL and without changing the program source code. Both FFTW2 and FFTW3 interfaces... Posted: 2009-06-19 13:00:00 by AmandaS (Intel) | FFT, fftw, fftw3, fourier transform, Integrated FFTW interfaces, prebuilt FFTW |
| Speeding up IPP FFT[Forums] I'm benchmarking different implementations of 1D-FFT, and I've written a simple code for testing IPP:#include <iostream>#include <ipps.h>#include <sys/time.h>int main() { for (unsigned... Posted: 2009-02-13 08:47:36 | FFT, fftw3, IPP, speedup |
| Intel Math Library: MKL 10.1 update 1 fixed memory leak![Forums] Hi guys,In a nutshell: if you are using MKL's DFT functions, you should update to 10.1 update 1.We just discovered a small memory leak in our application just last week. We spent a few days tracking it... Posted: 2009-01-12 12:38:49 | DFT, FFT, Intel Math library, memory leak, MKL |
| Performance info for different 2D FFT versions[Forums] I am performing 2D FFT on real data with dimensions 512x512. It is however for simplicitly implemented as a 1024x1024 complex FFT. I have been searching the Inte pages for info on speed comparing all... Posted: 2008-10-28 14:34:17 | FFT, MKL, performace |
| The Intel® Math Kernel Library and its Fast Fourier Transform Routines[Knowledgebase] By Rezaur Rahman Introduction Use these simple and yet powerful APIs provided by the Intel® MKL to port FFTW 2.x and FFTW 3.x code easily to Intel MKL interfaces. Find out how. Fast Fourier Transforms... Posted: 2009-04-09 21:00:00 by Md. Rezaur Rahman (Intel) | FFT, intel mkl |