You are not logged in. [Log In]


Forums » General Discussion » The Water Cooler » Bad math for video

Topic Options
Rate This Topic
#333488 - 01/05/11 02:03 AM Bad math for video
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11702
Loc: Richland, WA, USA
What Good is a Computer Processor That Does Bad Math? (Kotaku)

This article made me think of Chris (ClubNeon) doing crazy amounts of video processing.

Top
#333491 - 01/05/11 05:45 AM Re: Bad math for video [Re: CV]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10415
Loc: Calgary, Alberta
That was quite interesting, for a second it had me thinking back to the intel problem from yester year.
_________________________
Jason
-----------------
TTTHHHPPPPPTTTT!

My HT

Top
#333524 - 01/05/11 01:01 PM Re: Bad math for video [Re: jakewash]
ClubNeon Offline
connoisseur

Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
When I was doing vector programming on the Cell processor I noticed that IBM was making a big deal about the Cell being able to perform double precision math while all GPUs at the time were limited to single.

But there was a 4x speed hit for using doubles over single precision floats. So the extra precision was there for people who needed it, but since I was processing raw data from camera sensors, that at most had 24-bits of precision (but the noise floor really only yielded 18-bits of accuracy), the single precision was enough.

Though the point is I could get the extra precision if I needed it. Chips that trade speed for accuracy will be extremely single purpose. There's no way to turn off the design flaw when you don't mind trading in the speed, like there is with traditional design.
_________________________
Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris

Top

Moderator:  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 
Forum Stats

15,272 Registered Members
16 Forums
24,080 Topics
425,177 Posts

Most users ever online:
883 @ 03/04/17 05:06 PM

Top Posters
Ken.C 18044
pmbuko 16437
SirQuack 13579
CV 11702
MarkSJohnson 11444
1 registered (Mojo)
199 Guests and
3 Spiders online.
Key: Admin, Global Mod, Mod
Newsletter Signup