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nVidia Win GPU2 ***DISCUSSION*** - Page 20

post #191 of 302
-GPU2 update-

Quote:
June 24, 2008

GPU2 update


The GPU2 client has been out for a while now for our newest platform, NVIDIA, and I wanted to give an update. We're making great progress on several fronts of the beta testing of this client, with improvements to the CPU utilization and visualization (which currently is pretty much broken) coming soon. We are also working to support multi-gpu configurations. These are our highest non-science priorities. On the science-side, we're scrubbing the GPU clients to make sure the results make sense. GPU programming is challenging for many reasons, especially due to reduced precision and the complexity of using lots of threads in flight, and so it's important to make sure the results are accurate. So far, the results look promising. Once the GPU2 cores are completely validated and these client issues are addressed, we'll take the client out of beta and make a push to get an even greater adoption of this new client platform.

KNOWN ISSUES FOR GPU2/NVIDIA

Viewer doesn't work (coming soon). This will require a core upgrade, which is in the works.

GTX280 driver version. For pre-GTX280 cards, we recommend version 174.55 of the CUDA driver. We recommend 177.35 for GTX cards.

CPU usage can be strange (we're looking into this). The CPU utilization can spike on certain machines. We have an idea for what's the issue and Scott LeGrand at NVIDIA is working on a fix.

UNSTABLE_MACHINE error if too many EUE's (not really a bad thing -- a true feature of the client). If you see this error in your client log, it means that there is some problem with your configuration.

[SOURCE]

Multi GPU configurations in the future!?!
Edited by MasterKromm - 6/24/08 at 1:07pm
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post #192 of 302
This has been mentioned several times on their forums.

On the other hand, noone has mentioned that the client is on the fast track for getting out of beta. The ATI client never got out of beta. Let's hope they can get it working fast and then market it a lot more than they do now.
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post #193 of 302
The problem with 174.55 is it is half as fast as the 177.35. In my particular situation I was at 2835PPD with my 8800GTX with 174.55 but with 177.35 I was at 4618PPD with same card.

I did not test game performance with the 174.55 which I may do my problem with 177.35 modded .inf install I listed in another thread so I won't list it here again. I want to GPU2 fold though so I may give 174.55 a try again.
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post #194 of 302
any advice for setting up GPU2+SMP on my sig'd rig?

I am out of town, working..it is killing me that I didnt find out about this only a few days ago..like when I was home

Anyhow, I will be frantically setting up my machine again once I return, and am looking for some pointers. Thanks.
post #195 of 302
nitteo has been kind enough to write a great guide.
http://www.overclock.net/overclock-n...ah-6-12-a.html
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post #196 of 302
Quote:
Originally Posted by CL3P20 View Post
any advice for setting up GPU2+SMP on my sig'd rig?

I am out of town, working..it is killing me that I didnt find out about this only a few days ago..like when I was home

Anyhow, I will be frantically setting up my machine again once I return, and am looking for some pointers. Thanks.
You should look into running the affinity changer also.
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post #197 of 302
Quote:
Originally Posted by CL3P20 View Post
any advice for setting up GPU2+SMP on my sig'd rig?

I am out of town, working..it is killing me that I didnt find out about this only a few days ago..like when I was home

Anyhow, I will be frantically setting up my machine again once I return, and am looking for some pointers. Thanks.
i do it on mine atm, the beta smp will just work if you have gpu2 running too.
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post #198 of 302
thanks for the link- schubie.. good read, just what i needed

gibson- does the affinity changer really improve F@H times? How does it differ from setting affinity manually in the task manager?
post #199 of 302
I find if I use the Linux SMP through VMmare and GPU2 through windows. I get between 5000-5200 ppd on the GPU2 and the SMP client only slow down by 1 hour. Takes about 18 hours to finish 1 SMP Wu while the GPU2 is going. The SMP through VM is alot faster than the windows one.

That is what I found to be the best ppd.
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post #200 of 302
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
thanks for the link- schubie.. good read, just what i needed

gibson- does the affinity changer really improve F@H times? How does it differ from setting affinity manually in the task manager?
Everytime you get a new WU and the cores are not utilized (0 Load) XP puts it back on default (no affinity.) The Affinity Changer does so for you, automatically.
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