Physics/GPU revisited

Message boards : Number crunching : Physics/GPU revisited

To post messages, you must log in.

AuthorMessage
Profile dcdc

Send message
Joined: 3 Nov 05
Posts: 1831
Credit: 119,448,284
RAC: 11,030
Message 19091 - Posted: 21 Jun 2006, 22:59:25 UTC
Last modified: 21 Jun 2006, 23:00:06 UTC

Hi

I've read the crunching on GPU/SSE etc threads, but was wondering if this would make things easier to code?

I also saw Ethan's post about contacting Ageia (did they reply?)
ID: 19091 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Ethan
Volunteer moderator

Send message
Joined: 22 Aug 05
Posts: 286
Credit: 9,304,700
RAC: 0
Message 19101 - Posted: 22 Jun 2006, 2:26:40 UTC - in response to Message 19091.  

No reply after two emails. I guess they're too busy trying to sell cards to accelerate games that don't exist yet :)

I did hear that the PPU might suffer the same problem of a GPU, they don't always return the correct result. GPU's give up accuracy for speed, good for graphics since you don't see the random pixel error, but bad for science. The PPU folks probably did the same thing since who is going to notice if a flying piece of shrapnel is off by a degree?
ID: 19101 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
FluffyChicken
Avatar

Send message
Joined: 1 Nov 05
Posts: 1260
Credit: 369,635
RAC: 0
Message 19155 - Posted: 23 Jun 2006, 10:11:00 UTC - in response to Message 19101.  

No reply after two emails. I guess they're too busy trying to sell cards to accelerate games that don't exist yet :)

I did hear that the PPU might suffer the same problem of a GPU, they don't always return the correct result. GPU's give up accuracy for speed, good for graphics since you don't see the random pixel error, but bad for science. The PPU folks probably did the same thing since who is going to notice if a flying piece of shrapnel is off by a degree?

Actually I would have though a missing pixel maybe wuite bad for CAD (GPU) users or if the Physics (PPU) is wrong then it could have a nock on effect, it's not just shrapnel but animated bodies, trajectories, planes flying. They still need to be accurate.
Team mauisun.org
ID: 19155 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Jochen

Send message
Joined: 6 Jun 06
Posts: 133
Credit: 3,847,433
RAC: 0
Message 19158 - Posted: 23 Jun 2006, 12:17:38 UTC - in response to Message 19155.  

Actually I would have though a missing pixel maybe wuite bad for CAD (GPU) users or if the Physics (PPU) is wrong then it could have a nock on effect, it's not just shrapnel but animated bodies, trajectories, planes flying. They still need to be accurate.


Those cards were designed for accelerating physics in games. Keep your hands off that cards. They are not working yet. Only a few games support them at all. Of course, the graphics are much nicer and more realistic, but the framerate drops to a degree, I would consider unplayable (< 10 fps).

ID: 19158 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote

Message boards : Number crunching : Physics/GPU revisited



©2024 University of Washington
https://www.bakerlab.org