[SciPy-user] FFT troubles
Rob Managan
managan at llnl.gov
Fri Dec 9 17:20:19 EST 2005
At 1:46 PM -0700 12/9/05, Travis Oliphant wrote:
>Rob Managan wrote:
>
>>I am wondering if anyone can help me figure out where my FFts are
>>going bad with the latest svn version of scipy. This has been going
>>on for a few weeks.
>>Mac OSX 10.3.9, python 2.4.1
>>
>>I have fftw-2.1.5 installed and 'make check' reports no problems.
>>
>>
>This looks like a problem with the interface to fftw. Would you agree?
>
>Pearu knows the most about this particular section of code. It looks
>like his
>module is generically calling the fftw library. I don't know if all of
>the supported
>routines have the same calling conventions.
>
>Perhaps something else is going on to make it work with fftw. Do fft's
>work with the default fft?
>
>Do scipy.basic.fft and scipy.basic.ifft from scipy core work as expected?
>
Make that scipy.fft and scipy.ifft and the answer is yes. Just to be
clear here is what I did.
rm -rf .../site-packages/scipy/
cd core
python setup.py install
cd ..
Then the test runs fine using scipy.fft and scipy.ifft .
When I
cd scipy
python setup.py install
cd ..
Then the test fails. I guess that means there is a problem in how the
scipy package links with fftw-2.1.5.
What is the best way to figure out where the problem is??
--
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Rob Managan email managan at llnl.gov
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