2500k + GTX 580 beating out 3930k +GTX690????

Message boards : Questions and problems : 2500k + GTX 580 beating out 3930k +GTX690????
Message board moderation

To post messages, you must log in.

AuthorMessage
Matt Wolffe

Send message
Joined: 21 Aug 12
Posts: 2
United States
Message 45387 - Posted: 21 Aug 2012, 6:18:32 UTC

I have two machines running milkyway@home the first being an 95 2500k @4.8ghz and a GTX 580, the second being an i7 3930k @ 5ghz and a GTX 690. What doesn;t make sense to me however, is how the first machine is seemingly doing better than the second.

http://milkyway.cs.rpi.edu/milkyway/hosts_user.php?userid=446602

3930k details--http://milkyway.cs.rpi.edu/milkyway/host_app_versions.php?hostid=463265

2500k details--http://milkyway.cs.rpi.edu/milkyway/host_app_versions.php?hostid=463149
ID: 45387 · Report as offensive
ProfileJord
Volunteer tester
Help desk expert
Avatar

Send message
Joined: 29 Aug 05
Posts: 15512
Netherlands
Message 45388 - Posted: 21 Aug 2012, 8:11:54 UTC - in response to Message 45387.  

As far as I can see, the discrepancy could be due to the fact that the i5 has 242 valid tasks, the i7 only 227.
The turn-around time of the i5 is also lower (0.11 days) than the one for the i7 (0.29 days). More throughput is more credit is more recent average credit.
ID: 45388 · Report as offensive
Matt Wolffe

Send message
Joined: 21 Aug 12
Posts: 2
United States
Message 45399 - Posted: 22 Aug 2012, 4:16:30 UTC - in response to Message 45388.  

Is this fixable?
ID: 45399 · Report as offensive
Tapio

Send message
Joined: 27 Oct 11
Posts: 12
Message 45401 - Posted: 22 Aug 2012, 13:54:46 UTC - in response to Message 45387.  

I have two machines running milkyway@home the first being an 95 2500k @4.8ghz and a GTX 580, the second being an i7 3930k @ 5ghz and a GTX 690. What doesn;t make sense to me however, is how the first machine is seemingly doing better than the second.

http://milkyway.cs.rpi.edu/milkyway/hosts_user.php?userid=446602

3930k details--http://milkyway.cs.rpi.edu/milkyway/host_app_versions.php?hostid=463265

2500k details--http://milkyway.cs.rpi.edu/milkyway/host_app_versions.php?hostid=463149


Hey. Milkyway@home project requires a Double prediction support from graphics card. Both graphics cards (580 & 690) support DP calculation, but the gtx 580 is designed for DP calculation better than 690. If you want more out from 690 gpu use it for single prediction projects. Example: gpugrid.net project. gpugrid.net do not need DP, so that project works really well on gtx 690.
ID: 45401 · Report as offensive
Richard Haselgrove
Volunteer tester
Help desk expert

Send message
Joined: 5 Oct 06
Posts: 5096
United Kingdom
Message 45402 - Posted: 22 Aug 2012, 14:17:45 UTC - in response to Message 45401.  

Hey. Milkyway@home project requires a Double prediction support from graphics card. Both graphics cards (580 & 690) support DP calculation, but the gtx 580 is designed for DP calculation better than 690. If you want more out from 690 gpu use it for single prediction projects. Example: gpugrid.net project. gpugrid.net do not need DP, so that project works really well on gtx 690.

The word would be double/single precision, but with that correction, the explanation makes sense. To get the fastest DP processing on an NVidia card, you need to purchase from the Tesla range, not GeForce.
ID: 45402 · Report as offensive

Message boards : Questions and problems : 2500k + GTX 580 beating out 3930k +GTX690????

Copyright © 2024 University of California.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.