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EmSti
02-22-14, 05:58 PM
Any experiences with this new driver? Boinc impact?

Long boring discussing on changes in cpu usage for gpugrid with a recent nvidia beta driver, but at the end this comment has peaked my interest :
"Hello: In Windows 8.1 since I installed the latest Nvidia driver (a couple of days) 334.89 behaves like Linux, (for some time now) the CPU load is reduced to 10-20% (varies according to the task type) instead of 100% previously.

The overall performance of the GPU hardly altered and the change improves load / performance / consumption ratio."

Full forum thread http://www.gpugrid.net/forum_thread.php?id=3615

I will installing to Sunday and testing it out. No choice really, it adds support for the Titan Blac

From the release notes:

NVIDIA PhysX System Software - version 9.13.1220

NVIDIA GPU PhysX acceleration is available only on systems with GeForce 8-series and later GPUs with a minimum of 256 MB dedicated graphics memory.
NVIDIA GPU PhysX acceleration is not available if there is a non-NVIDIA graphics processor in the system, even if it is not used for rendering.



I didn't know that, I was planning on moving a r9 280x out of this pc and making it all NVidia again anyway.
STE\/E
02-23-14, 08:40 AM
Let us know about the 334.89 driver EmSti ... THanks
EmSti
02-23-14, 03:09 PM
So far so good. The driver does decrease the % of CPU used by GPUGrid. CPU went from 90%+ to 11%. It also decrease the GPU load. With the 3332.21 driver I was getting gpu usage as 90% with one wu/gpu and 97% with 2 wus/gpu. Now I am getting gpu usage of 85% when doing 1 and 92% when doing 2. It will be many hours before I can tell if there is any effect on runtimes.
Slicker
02-23-14, 11:32 PM
If you run projects where CreditNew is used, 85% vs 99% doesn't matter because the [socialist] algorithm in CreditNew grants credit according to hardware, and not actual work done. It's like having unions for CPUs and GPUs. :-)
EmSti
02-24-14, 12:16 AM
If you run projects where CreditNew is used, 85% vs 99% doesn't matter because the [socialist] algorithm in CreditNew grants credit according to hardware, and not actual work done. It's like having unions for CPUs and GPUs. :-)

:)) That's too bad, because if I understood that correctly, trying to get the most out of your system won't get you any real benefit? Do we have a thread that discusses CreditNew? I should get got up on that whole business. I have yet to see a post that mention CreditNew is a good way.

It is nice to have the CPU's back for crunching on other projects. I plan to stick with this version of the driver until something ugly is discovered.
Bryan
02-24-14, 12:44 AM
I have yet to see a post that mention CreditNew is a good way.


Well crank up and old P4 rig and you will really appreciate making the same credits as a I7-4770K ... so it isn't all bad =)) Progressive crunching ... evens the playing field!
Fire$torm
02-25-14, 01:46 AM
I haven't noticed anything though I haven't looked real hard either...

Btw....



From the release notes:

NVIDIA PhysX System Software - version 9.13.1220

NVIDIA GPU PhysX acceleration is available only on systems with GeForce 8-series and later GPUs with a minimum of 256 MB dedicated graphics memory.
NVIDIA GPU PhysX acceleration is not available if there is a non-NVIDIA graphics processor in the system, even if it is not used for rendering.



This is intentional on their part. Until recently, a lot of hardcore gamers were doing mixed GPU setups. They would use a low/mid grade CUDA for the PhysX as it's mostly CPU intensive and use a high end Radeon for the graphics. Made for a really uber-frag machine.
EmSti
02-25-14, 11:16 AM
It looks like the driver has slowed down the GPUGrid tasks. The only comparable type I have is Santi. When running 2 wus/gpu with 332.21 driver both wus take 11.5 hours (I don't have 1 wu/gpu numbers for Santi). With 334.89 driver 2 wus/gpu takes 13 hours; 1 wus/gpu takes 7.5 hours (so for me 2 wus/gpu on gtx 690 engines has benefit).

Benefit: decrease CPU usage
Negative: increase wus times

When I add in the new GPU today, I will likely reinstall to 332.21. Still deciding on that.
EmSti
02-25-14, 09:03 PM
Glad I thought about it a little more, I have to keep the driver for the new GPU.
DrPop
02-25-14, 10:17 PM
Well crank up and old P4 rig and you will really appreciate making the same credits as a I7-4770K ... so it isn't all bad =)) Progressive crunching ... evens the playing field!

Oh man, don't even get me started!!!!!!!!!!!!!!!!!!!!! :p ;)