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Seifert__Urban

Beginner

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03-23-2020
12:49 AM

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1D FFT along second axis of 4D array

Hi,

I am trying to compute the 1D fft along the second axis of a row-major array indexed as A[n*NK*NJ*NI+k*NJ*NI + j*NI + i].

Given the explanations here: https://software.intel.com/en-us/forums/intel-math-kernel-library/topic/536518, my understanding would be that i could do a 1D fft with the strides according to the first axis, and then loop over *both* n and k. is this indeed the correct approach?

Many thanks and with best regards

1 Reply

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Ruqiu_C_Intel

Employee

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04-09-2020
08:33 PM

19 Views

Hello Seifert, Urban,

Thank you for your question. Can you provide sample code that we can help figure our your problem?

BRs,

Ruqiu

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