Claimed vs Granted Credit different with CUDA ?

Questions and Answers : GPU applications : Claimed vs Granted Credit different with CUDA ?
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile BigWaveSurfer

Send message
Joined: 29 Nov 01
Posts: 186
Credit: 36,311,381
RAC: 141
United States
Message 865793 - Posted: 15 Feb 2009, 17:04:03 UTC

Why is my granted credit lower than my claimed credit with my CUDA WU's? My claimed credits are mostly 57.xx but my granted credits are mostly 42.xx. One out of every ten might actually be the same, but most are not, why is this?
ID: 865793 · Report as offensive
Fred W
Volunteer tester

Send message
Joined: 13 Jun 99
Posts: 2524
Credit: 11,954,210
RAC: 0
United Kingdom
Message 865797 - Posted: 15 Feb 2009, 17:18:54 UTC - in response to Message 865793.  

Why is my granted credit lower than my claimed credit with my CUDA WU's? My claimed credits are mostly 57.xx but my granted credits are mostly 42.xx. One out of every ten might actually be the same, but most are not, why is this?

The overclaiming by the CUDA app is a known problem that is being worked on. You will get the claimed credit only when your wingman also crunches with CUDA. In all other cases you will get the (lower) credit claimed by the CPU app that your wingman uses.

F.
ID: 865797 · Report as offensive
Profile BigWaveSurfer

Send message
Joined: 29 Nov 01
Posts: 186
Credit: 36,311,381
RAC: 141
United States
Message 865890 - Posted: 15 Feb 2009, 22:11:03 UTC - in response to Message 865797.  

Which is correct though? When they fix this problem will my claimed credits be less or will my granted credits match the claimed credit? Are my credits being 'stolen' because someone is using their CPU and not CUDA?
ID: 865890 · Report as offensive
Fred W
Volunteer tester

Send message
Joined: 13 Jun 99
Posts: 2524
Credit: 11,954,210
RAC: 0
United Kingdom
Message 865911 - Posted: 15 Feb 2009, 23:07:35 UTC - in response to Message 865890.  

Which is correct though? When they fix this problem will my claimed credits be less or will my granted credits match the claimed credit? Are my credits being 'stolen' because someone is using their CPU and not CUDA?

The $64M question. The GPU reckons it is doing more FLOPs than the CPU; since they are so different in approach, it may well be right but I guess since the CPU was there first it will claim squatter's rights and the the GPU claims will eventually be brought into line. Meanwhile, be grateful for the bonus when you are teamed up with a GPU crunching wingman.

F.
ID: 865911 · Report as offensive

Questions and Answers : GPU applications : Claimed vs Granted Credit different with CUDA ?


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.