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SLI GTX 460: Low PPD? - Page 2

post #11 of 27
Quote:
Originally Posted by test tube View Post
Okay, I added it twice and now it reads 22K PPD. It seems like kind of a hack way though, since they both use the same log file so it's just doubling the estimated PPD basically.

-smp 6 was added, but it's running a job that does not allow for CPU parallelization.
Uhh.

You need 2 separate install folders. One for each GPU. They will each have their own install and their own log file.
    
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post #12 of 27
Ehm isn't it better to run 2 instances of fah ? One on each card and then add them both to hfm.net.
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post #13 of 27
Bleh I should have specified more.
When you set up the clients, did you install 2 GPU clients cause that is the correct way of doing so. You should have 2 different logs for each GPU folding which HFM can read.

For the SMP did you open your client using the shortcut?
That unit is meant for single core processors.
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post #14 of 27
Thread Starter 
That's not necessary, the GPU client can use both GPUs if you use two instances. The speed-up in ns/day is clearly present and scales linearly, at least with two GPUs. The point rewards should be the same.
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post #15 of 27
Each GPU needs 1 GPU client, follow this multi-gpu guide.
Then add each client on HFM so it shows you what each GPU is working on and separate PPD.
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post #16 of 27
Thread Starter 
Quote:
Originally Posted by LiLChris View Post
Bleh I should have specified more.
When you set up the clients, did you install 2 GPU clients cause that is the correct way of doing so. You should have 2 different logs for each GPU folding.

For the SMP did you open your client using the shortcut?
That unit is meant for single core processors.
Yeah, but the thing is, the simulation is running twice as fast without the installation separated. HFM isn't calculating PPD correctly as the rate of simulation has effectively doubled and afterburner says both GPUs are in use.

This is better for the reason that F@H doesn't seem to support restarts/writes restart velocities too. I'm guessing points are only rewarded for completed data sets (per completed simulation)?

I wrote a batch file for the SMP client to specify the parameter

Quote:
Each GPU needs 1 GPU client, follow this multi-gpu guide.
This is not true, at least in terms of the speed of the simulation, parallelization of the GPUs is working fine as reported by the log files/interactive output.
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post #17 of 27
You are making it sound more complicated than it really is.

1 GPU works on 1 work unit.
2 GPUs works on 2 different work units.

Having SLI does not mean it will fold 1 work unit twice as fast, it doesn't work that way.
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post #18 of 27
Disable SLI. I'm getting 11.4k and 11.8k on my 460s. I have my shader clocks OC'd to 1747.
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post #19 of 27
It just seems like you followed the wrong guide when setting up the clients.
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post #20 of 27
Thread Starter 
Quote:
Originally Posted by LiLChris View Post
You are making it sound more complicated than it really is.

1 GPU works on 1 work unit.
2 GPUs works on 2 different work units.

Having SLI does not mean it will fold 1 work unit twice as fast, it doesn't work that way.
Kk, I'll reinstall with two clients and calculate ns/day manually and see how they compared, right now i don't have the time. Maybe you are right and the nVidia thing is just messed up despite both GPUs being run at full capacity.
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