Forum > Windows
GPU crunching question
Devaster:
optimized CPU versus my GPU ???
GPU powerspectrum is veeeeeeeeeery slow , but i think i have found why : context switching.
i initialize rapidmind before client graphics and i am running under vista with aero ....
so i think there is doing next :
rapidmind must upload all data ,calculate and download all data. when awro need GPU and graphics memory then in middle of calculation again - stop calc, data download, aero upload ,calc,aero download, data upload and continue calc .....
Simon:
Ouch!
Good thought though, sounds very plausible, especially since Vista likes to poll ALL hardware every few microseconds. Have you tried with XP/XP64?
Regards,
Simon.
Devaster:
i havent installed it :-\
but i think i will return to old good wxp... ::)
Vyper:
Switch of the Aero interface and the Gfx is running in 2d mode (I know i've checked)
..
I have modified a 8800 bios with throttling and 2d mode, it works and i've checked
that atitool reports lower mem/gpu clocks and if it does it runs in 2d only mode leaving all GPU cycles to your program..
Try again before reinstalling :)
Kind Reg Vyper
Devaster:
maybe another reason : MS in Vista has fu***d off any opengl support and rapidmind is running on opengl ....
i compile a brook version with all four backends (cpu,opengl,dx9,ctm) and i will see ....
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version