Hello,
thanks for your comments. If I got you right, I should look for a
FFT-code that uses SSE (what does this actually stand for?), which means
that it vectorizes 32bit-single-operations into larger chunks that make
efficient use of recent CPUs.
You mentioned FFTW and MKL. Is this
Lars Friedrich wrote:
Hello,
thanks for your comments. If I got you right, I should look for a
FFT-code that uses SSE (what does this actually stand for?), which means
that it vectorizes 32bit-single-operations into larger chunks that make
efficient use of recent CPUs.
You mentioned
MKL is from Intel (free as in beer on Linux and for academic purpose I
think, but of course, you should check whether this applies to you).
AFAIK, the MKL is free for non-commercial purposes under Linux only, and
there is a special license for academics.
Matthieu
Lars Friedrich wrote:
Hello,
thanks for your comments. If I got you right, I should look for a
FFT-code that uses SSE (what does this actually stand for?), which means
that it vectorizes 32bit-single-operations into larger chunks that make
efficient use of recent CPUs.
You mentioned
Nicely done Travis. Working code is always better than theory. I copied your
interface and used the brute-force, non-numpy approach to construct the
pivot table. On the one hand, it doesn't preserve the order that the entires
are discovered in as the original does. On the other hand, it's about
On 8/3/07, David Cournapeau [EMAIL PROTECTED] wrote:
Here is what I can think of:
- adding an API to know whether a given PyArrayObject has its data
buffer 16 bytes aligned, and requesting a 16 bytes aligned
PyArrayObject. Something like NPY_ALIGNED, basically.
- forcing data
On 06/08/07, David Cournapeau [EMAIL PROTECTED] wrote:
Well, when I proposed the SIMD extension, I was willing to implement the
proposal, and this was for a simple goal: enabling better integration
with many numeric libraries which need SIMD alignment.
As nice as a custom allocator might be,
Anne Archibald wrote:
I have to agree. I can hardly volunteer David for anything, and I
don't have time to implement this myself, but I think a custom
allocator is a rather special-purpose tool; if one were to implement
one, I think the way to go would be to implement a subclass of ndarray
On 07/08/07, David Cournapeau [EMAIL PROTECTED] wrote:
Anne, you said previously that it was easy to allocate buffers for a
given alignment at runtime. Could you point me to a document which
explains how ? For platforms without posix_memalign, I don't see how to
implement a memory allocator
