> Date: Fri, 28 Aug 2015 14:28:49 -0400
> From: hodge@stsci.edu
> To: numpy-discussion@scipy.org
> Subject: Re: [Numpy-discussion] Numpy FFT.FFT slow with certain samples
>
> On 08/28/2015 02:02 PM, Joseph Codadeen wrote:
> >
> > * my_1_minute_noise_with_gaps_truncated took***30.75620985s* to process.
> > * my_1_minute_noise_with_gaps took *22307.13917s*to process.
> >
>
> You didn't say how long those arrays were, but I can make a good guess
> that the truncated one had a length that could be factored into small,
> prime numbers, while the non-truncated one had a length that was either
> prime or could only be factored into large primes.
>
> Phil
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