CUDA on WIN7 is much slower than on WIN XP same computer, two OSs, two different run times

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi.
I’m using GTX 295 (Gigabyte) for my work. Here are the specs of my PC:

MOBO: Gigabyte GA-MA790XT-UD4P
CPU: AMD Phenom II X4 965
Mem: OCZ 4GB DDR3 1066

I have a dual boot system consisting of Windows XP (SP2) and Window 7 (Ultimate).
When I run my program on XP each iteration takes ~350mS (CUDA 2.2).

But when I tried it on Windows 7 it took 800mS and every 10 (or so) times it jumped up to 2000.
I’ve tried updating the CUDA to 2.3 and Visual Studio from 2005 to 2008 (express). Nothing I do seems to get the result I get in XP.

Is there any solution for Windows 7 users?

Thank you,
Gadi

2

Hello Gadi,

Please excuse my ignorance, but why would one use Cuda in windows? May I ask what software package you are using?

3

Why not use it in Windows? There are plenty of interactive applications (e.g. engineering/modeling programs) that you’d want to use CUDA in a windowed environment. And in that respect, Linux/X server has pretty similar limitations to Windows XP.

More examples:

Matlab

Badaboom

Folding@home

Adobe Photoshop