Several GTX 470 issues with 256.25

[pwolfe1]

First little bit about my set up.

I'm running 2 gtx 470s on an i7 with ubuntu 10.04

Currently running 2.6.32-22

I'm mainly concerned about crunching on gpugrid (boinc) with these cards.

With the 195.36.24 drivers, everything is working extremely well. Both cards are detected, and 2 simultaneous tasks run. nvidia-settings properly reports all information and when boinc is active, both cards show as Performance Mode - maximum performance in powermizer.

Now, when I upgrade to 256.25, things get strange. Both cards are correctly detected in nvidia-settings, but when boinc is active, the system becomes slow and is subject to frequent lock ups require a hard reboot. While it is running, one thread of my processor pegs all the way to 100%, something that never happens with the 195 driver. Also powermizer only shows one card going to Performance level 3 (max), the second card never leaves mode zero. BOINC is detecting both cards, but only 1 of the 2 tasks ever runs.

Any ideas guys? Or is there any additional info I can provide to help figure out whats going on here?

[zander]

Thank you for reporting this problem. We recently identified a regression that affects configurations with multiple GF100 GPUs, such as yours. It should be fixed in the next 256.xx BETA release.

[pwolfe1]

Originally Posted by zander

Thank you for reporting this problem. We recently identified a regression that affects configurations with multiple GF100 GPUs, such as yours. It should be fixed in the next 256.xx BETA release.

Sounds great! Thanks!