[sldev] Re: [VWR] Real-time Raytracing

[Dzonatas]

Dirk Moerenhout wrote:
>>  ...within one year on the octacores.
>>     
>
> Which 0.1% of the SL population will own.
>   
I think they said the same about the latest ATI and nVidia cards.

> It's nice, it's the future but if we're today not even ready to start
> using SSE as a minimum then why dream of what you can do with a CPU
> that's not even on the market yet?
>   
The problem is not just SSE but cache pollution even without SSE. More 
cores would allow a program to assign specific tasks to a core and 
optimize for that cache.

ATI has also presented new instruction to help monitor and control the 
cache.

Modern OSs still don't even thread correctly under multicores, as they 
have no way to know what a program will do with the cache. The new Linux 
scheduler tries (CFS) to address some of it, but even that dev team has 
noted it still needs work.

SL just easily exploits the problem the OS schedulers have had.

-- 
Power to Change the Void
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