On Thu, Sep 8, 2011 at 1:02 AM, Mathieu Bouchard matju@artengine.ca wrote:
On Wed, 7 Sep 2011, Charles Henry wrote:
On Wed, Sep 7, 2011 at 7:59 PM, Mathieu Bouchard matju@artengine.ca wrote:
On Wed, 7 Sep 2011, Mathieu Bouchard wrote:
On Wed, 7 Sep 2011, Bill Gribble wrote:
So far iteration on plain floats seems to be the best I can come up with, but HADDPS is tantalizingly close to what I want to do. Any hints?
Sorry, what's HADDPS?
http://www.rz.uni-karlsruhe.de/rz/docs/VTune/reference/HADDPS--Packed_Single...
This is really interesting. Your compiler probably knows how to optimize this kind of information.
How can you tell that ? I bet it doesn't...
Yeah, I thought it over. I was wrong. I was also wrong about SSE4.2--AVX is the new instruction set with 256-bit wide operations.
What could it be doing about a scan like this, anyway ?
fft->multiply by 2*pi*i*f->ifft and fall over...
I dunno, but I'm working on it a bit.