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Re: IDL FFT vs C benchmark? [message #18820 is a reply to message #18787]

Fri, 04 February 2000 00:00

Liam E. Gumley
Messages: 378
Registered: January 2000

Senior Member

Myron Brown wrote:

> Hi. Has anybody done any benchmarking of IDL's
> FFT routines? They seem pretty fast, actually. I'm
> wondering how they compare to efficient C code.
> Perhaps someone has looked at fftpack or other
> efficient implementations of the FFT in C and compared
> them?

Check out
http://airs2.ssec.wisc.edu/~paulv/fft/fft_comparison.html

You might need to run the benchmarks on your platform. As I recall, IDL
performed comparably to the FORTRAN version from Numerical Recipes.

If you have the energy, I'd be interested to see a comparison of IDL and
FFTW
http://www.fftw.org/

Cheers,
Liam.
http://cimss.ssec.wisc.edu/~gumley

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		Re: IDL FFT vs C benchmark? By: David McClain on Mon, 07 February 2000 00:00
		Re: IDL FFT vs C benchmark? By: Liam E. Gumley on Fri, 04 February 2000 00:00

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