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CUDA 2.1 BETA/180.60

pmrdij

pmrdij

Limp Gawd
Joined
Jun 16, 2004
Messages
197
noticed that a thread has been started up on the 180.70 driver that recently appeared. this just showed up on nVIDIA's site under the CUDA section:

NVIDIA Driver for Microsoft Windows Vista 64-bit with CUDA Support (180.60)

the CUDA support that they speak of is CUDA 2.1 BETA. reports over at Guru3D paint a prettier picture with these compared to the 180.70's. just a heads up it doesn't have PhysX 8.10.13 in the package but that can be downloaded separately here.

- Robert (PmR)DIJ

 
took the plunge with this driver and PhysX 8.10.13 this morning. finished off Assassin's Creed and also took a few races in with GRID. both played far smoother and without any hiccups compared to 178.24.

i haven't put FahMon to use until prior to the driver switch this morning. per FahMon these are the figures before and after the switch with the same WU's in play:

178.24
GPU0 - 3702 PPD
GPU1 - 3912 PPD

180.60
GPU0 - 4275 PPD
GPU1 - 2575 PPD​

now GPU0 is actually the weaker of the two cards (GPU1 is an eVGA SSC 8800 GTS 640MB w/112SPs where GPU0 is an eVGA 8800 GTS 640MB w/96SPs). both are running @ 625/1450/975. does the increase/decline in numbers that FahMon is reporting for GPU1 make sense to anyone? seems kind of off to me.

- Robert (PmR)DeathInJune

 
My best guess is that the driver is putting the 2nd card into 2d only mode.

 
Kendrak said:
My best guess is that the driver is putting the 2nd card into 2d only mode.

Click to expand...

huh, could that have anything to do with the fact that i have a dummy DVI to VGA connected? any idea on how one could confirm this?

- Robert (PmR)DeathInJune

 
Not sure how to confirm.....

I do know when I was trying to run my 2x GTX260 cards in a 750i mobo I had the same problem.

After 2 mobo's and some confirmation from fellow horde members we concluded that the 2nd card was stuck on 2d only mode and was locking us out of any OC settings to try and force 3D mode (and thus turning on the full power of the card)

My guess is this is a "feature" that is designed to keep power consumption to a low.

 
Kendrak said:
Not sure how to confirm.....

I do know when I was trying to run my 2x GTX260 cards in a 750i mobo I had the same problem.

After 2 mobo's and some confirmation from fellow horde members we concluded that the 2nd card was stuck on 2d only mode and was locking us out of any OC settings to try and force 3D mode (and thus turning on the full power of the card)

My guess is this is a "feature" that is designed to keep power consumption to a low.

Click to expand...

solution found!

ok so i also installed RivaTuner 2.20 this morning which adds multi-GPU support. sure enough the Hardware Monitoring plugin informed me that GPU1 was not running at the 625/1450/975 clocks i had GPU0 running at. it had the default clock speeds being 576/1350/900. never encountered this problem with 178.24 and the prior version of RT which seemed to always OC both cards despite SLI being disabled but the trick to overcome this was simple:

1. in the main dialog select "GPU1" from the first drop down menu
2. in the second drop down menu on the main dialog select "System Settings" and setup your 3D clocks​

i now have both GPU's running at the same speed and hopefully will be reporting back in a few hours improved results after i watch my San Jose Sharks crush the Washington Capitals.

- Robert (PmR)DeathInJune

 
OK got greedy and set my clocks to 675/1560/1050 to see if any extra OC could be had from this new driver set (as some have reported to have come from such). BSOD later i lost one of my GPU's WU.. anyhow regardless of clocks FahMon still says that my secondary card is not running at the same level as the first...

have no idea how to get around this but this driver is desired more so for its implications with PS CS4 and multi-monitor support in SLI mode. there's got to be a way to resolve this. -forcegpu nvidia_g80 does nothing.

good news is my Sharks crushed the Capitals as expected. 7-2 :p.

edit: NV_FAH_CPU_AFFINITY doesn't help either but after a few hours of running through the Fah forums i ran into what seems to be the most consistent source of the problem --> different SP counts between cards.. in the majority of the cases i read people had their slower folding card having a different SP count (+/-) vs. the card(s) that cranked out higher PPD numbers. in my case i have the primary card with 96 and the secondary with 112 SP's. seems that everyone with identical cards do not see this issue ever.

sadly the secondary card doesn't have a water block on it as the first one does and swapping everything around right now is not something i've time for. damn.

- Robert (PmR)DIJ

 
well after rebooting this morning i have found myself with my second GPU persistently stuck with the wonderful 198MHz issue.. have been trying everything throughout the day and can safely say this is BS... seriously there's no temp issue nor power issue existing as switching the six pin power adapters around between my two GPU's doesn't cause my primary display card to shit itself. have no idea what in the hell sparked this but this has been around for a while and mostly considered a driver issue... i so cannot wait to go back to ATI..

- Robert (PmR)DeathInJune

 
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