Help with FFT length

[Gradient]

I have searched high and low for a way to control the FFT length of the exponent I have been assigned. Based on my benchmark test, my computer runs fastest (by far) on a FFT of 1024K. I calculated the rate using the following: [avg. time]/[FFT] and sorted the results to find the lowest sec/K.

I have read all the .txt files including undoc.txt and cannot find a way to force it to 1024K. Can anyone help?

Thanks.

[Batalov]

Originally Posted by Gradient

Based on my benchmark test, my computer runs fastest (by far) on a FFT of 1024K.

The important question is not "what is the fastest FFT size" but "what is the fastest FFT that can be used".
The program will use the latter, automatically. You don't have to do anything.

See this thread, for example. (There were other similar threads, periodically.)

[Gradient]

Thank you. I will step away from Mordor.

Originally Posted by Batalov

The important question is not "what is the fastest FFT size" but "what is the fastest FFT that can be used".
The program will use the latter, automatically. You don't have to do anything.

See this thread, for example. (There were other similar threads, periodically.)

[Batalov]

Welcome to the forum!

The good thing is that you haven't even entered Mordor.
It is not there - where you were headed. That way, there were only the tar pits of lost time and frustration. ;-)