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Use CPU(KL) to run FFT of Intel IPP takes longer than CPU(HL)

Tsai__Richard
Beginner
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Customer uses related Fast Fourier Transform(FFT) part of Intel Integrated Performance Primitives(IPP) to get calculated result (Please refer attached file).
Why use a new generation of CPU (Kaby Lake)) to run FFT of Intel IPP will takes longer than the previous generation of CPU (Haswell)? Could you expain this phenomenon? Thanks.

 

 

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7 Replies
Abhinav_S_Intel
Moderator
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Thank you for reaching out to us. Can you please share some sample code to investigate this issue on our side?

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Tsai__Richard
Beginner
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Could you tell in detail what kind of some sample code sharing with you?

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Abhinav_S_Intel
Moderator
793 Views

Any sample code which is shareable and can reproduce Fast Fourier Transform(FFT) performance issue observed at your end. 

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Tsai__Richard
Beginner
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Our AE keeps on asking customer's sharing sample code quickly. 

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Gennady_F_Intel
Moderator
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Richard, are there any samples from your side?

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Tsai__Richard
Beginner
793 Views

Keep on urging AE to ask for customer's providing sample code.

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Pavel_B_Intel1
Employee
794 Views

Richard,

which FFT do you mean: signal processing (1D) or image processing (2D)?

In any way I recommend to use one OS for perf measurement. win7 vs win10 - there are can be some patches for security vulnerability affect performance.

Pavel

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