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? about nvidia card folding
- Thread starter magoo
- Start date
tjmagneto
[H]ard DCOTM x2
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- Aug 6, 2008
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The cards will work independantly. I have 2 465s and no bridge.
Thanks.
I thought that was the case, but I didn't want to screw it up.
Right now I have the CPU and a Radeon 5850.
in my experience once your past 1 gpu' the smp client doesn't take anymore of a huge hit.
Yes. The more GPUs you run, the larger the CPU hit. The actual difference depends on what GPUs and clients you're using as well as what CPU you're using. In most cases, the GPUs will more than make up the decrease in CPU PPD, but with really fast CPU systems like SR-2 rigs, it's not worth it to run any GPUs at all.
tjmagneto
[H]ard DCOTM x2
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- Aug 6, 2008
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I been folding only with one of my two GPUs in the 980x box for a while but I do net more points with both cards folding versus CPU client only.
Also, if you are running -smp 7, I doubt you see any more of a CPU hit running 1 GPU versus 4 GPUs. You are already forcing the 12.5% CPU hit. I don't think that the cards are going to pull over 3% CPU each (I may be way wrong on this.) Since they have 12.5% CPU to use anyway, you shouldn't see much of a difference.
**waits for the GPU gods to correct me**
**waits for the GPU gods to correct me**
agreed 100%. the core tha i leave open barely goes over 50% usage with 4 gpu's
Because of the way Hyperthreading works, you are still using basically 100% of your CPU when you use -smp 7. Adding more GPUs does make the CPU client take a hit.
I think I'm doing something wrong, or my folding box is just a POS......anyway here's the deal............
evga 790i ultra MB, Q6600 at a mere 2.8 GHZ, and two GTX 285s.
powered by a PC P&C 850W SLi PSU (60A on the 12V with 30A to the GPUs)
I can't run the system more than a couple hours before it crashes?
I think it's just a shit board for OCing, so I think I'm just going to put it at stock and not run any SMPs and just run GPU WUs.....
suggestions are welcome.
evga 790i ultra MB, Q6600 at a mere 2.8 GHZ, and two GTX 285s.
powered by a PC P&C 850W SLi PSU (60A on the 12V with 30A to the GPUs)
I can't run the system more than a couple hours before it crashes?
I think it's just a shit board for OCing, so I think I'm just going to put it at stock and not run any SMPs and just run GPU WUs.....
suggestions are welcome.
BSOD primarily, then will go into a restart cycle loop.
Just a half hour or so ago i stopped running the SMP and it seems to be OK.
I was running SMP and a single 5850, but when I installed the 285s, things started to go downhill.
Does the 285 speed push the CPU too hard? They seem much faster at the WU than the 5850 was.
What's the BSOD error? Follow these instructions to disable the automatic rebooting if you don't have time to catch it: http://pcsupport.about.com/od/windows7/ht/automatic-restart-windows-7.htm
The GPU clients running on the 285s probably use less CPU resources combined than the 5850's client did. nVidia GPUs are simply much more efficient than ATI GPUs at running Folding@home at the moment.
The GPU clients running on the 285s probably use less CPU resources combined than the 5850's client did. nVidia GPUs are simply much more efficient than ATI GPUs at running Folding@home at the moment.
I'm wondering whether you PSU could be starting to get flaky. Folding will push your GPU's harder than gaming will.
How are your temperatures for the CPU and GPU's? Perhaps you can try running just one GPU for a while to see if it increases stability.
CPU is watercooled and never goes over 38C, but I stopped using it. I think the SMP + GPUs was too much load.
GPU temps are 70C constant with an automatic fan profile with Afterburner, fans run about 70%.
I had the same thought. This PSU was actually made for only 2 6 pin PCI-e connections and 30A on the GPUs. When I cut in the GPUs the PSU fan really spins up. I think it's getting a headache.
I ran the machine all last night with just two GPUs and the CPU running essentially idle and it worked all night without an incident.
I ordered a new PSU yesterday, a TX-850 from Corsair......it was on sale + had a MIR, so the cost was just over $100......a version 2 so a good deal. I really think power is an issue no matter how good the PC P&C should be, it's old and not designed for this kind of work.
Well, if it ends up that your PSU was fine, I suppose you will now have a spare PSU for another folding rig since it looks like you are becoming our newest addict here
These types of problems are so hard to diagnose as it could be just about anything. Could even be a flaky motherboard or who knows! I just hope things work out after you change PSU's!
It's old, but it is most certainly designed for this kind of work. The Turbo-cool line was based on server-grade Win-tact units. The PSU could very well be failing, but that's not because it wasn't designed to run at capacity.