awesome sauce... Incidently I got given a 48MHz arm dev board today.... On Wed, Jan 11, 2012 at 12:14 AM, Manu <[email protected]> wrote:
> Just thought I might share a real-life case study today. Been a lot of > talk of SIMD stuff, some people might be interested. > > Working on an android product today, I noticed the matrix library was > burning a ridiculous amount of our frame time. > The disassembly looked like pretty normal ARM float code, so rewriting a > couple of the key routines to use the VFPU (carefully), our key device > moved from 19fps -> 34fps (limited at 30, we can now ship). > GalaxyS 2 is now running at 170fps, and devices we previously considered > un-viable can now actually get a release! .. Most devices saw around 25-45% > speed improvement. > > Imagine if all vector code throughout was using the vector hardware > nicely, and not just one or 2 key functions... > Getting the API right (intuitively encouraging proper usage and > disallowing inefficient operations), it'll make a big difference! >
