Double precision performance (resolved)

Baiame
Posts: 4
Joined: Tue Jul 15, 2008 10:59 am

Double precision performance (resolved)

Post by Baiame »

I'm using Microsoft Visual Studio 2008 with the default compiler. The Bullet demos run about 3-5 times slower when built using the release double configuration versus the release float configuration (on WinXP 32-bit). I would of course expect it to be considerably slower, but the causes of decreased performance in applications using doubles that I'm aware of cannot explain this difference. What am I missing? Is there anything I can do? Thanks.

EDIT- Sorry, should've posted my specs. I'm using a machine with an Intel Core 2 Duo E6850 (3 GHz) and 2 GB of DDR2 800 cl4 memory, and a GeForce 8800GT with 512 MB of VRAM (doubt that's relevant).

EDIT2- Nevermind. Seems it was related as much to the optimization options of the demos themselves, and the GUI library used, etc., which I didn't expect. The double version is actually only around 1.2 times slower, which is what I'd expect.