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Limiting i7 cores through Set Affinity a PPD increase?

post #1 of 12
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If I dedicate say, cores 0-6 for my i7 client, and then core 7 for my 2 GPU clients, will I see a PPD increase?
 
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post #2 of 12
Quote:
Originally Posted by stu. View Post
If I dedicate say, cores 0-6 for my i7 client, and then core 7 for my 2 GPU clients, will I see a PPD increase?
Dear Stu,

Please do the math.

-TG
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post #3 of 12
Quote:
Originally Posted by Tleilaxu Ghola View Post
Dear Stu,

Please do the math.

-TG
What math is he supposed to do? I cant even figure it out from your screen shot.

Were you running it on 7 cores?

Quote:
Originally Posted by stu. View Post
If I dedicate say, cores 0-6 for my i7 client, and then core 7 for my 2 GPU clients, will I see a PPD increase?
Yes, you will probably see a very nice increase in PPD.
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post #4 of 12
I'd probably take the last cores for the i7, and the first 2 cores for the GPU, but the idea is the same.
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post #5 of 12
Quote:
Originally Posted by k4m1k4z3 View Post
What math is he supposed to do? I cant even figure it out from your screen shot.

Were you running it on 7 cores?


Yes, you will probably see a very nice increase in PPD.
at 4.20 GHz stu will be getting about 77k per -bigadv assuming project 6900.

divide 77k by 4 = whaaat?

is your GPU going to get better than that number? if so fold it, if no then fold with your CPU unless you are doing stuff like testing or whatever.

this is not that hard is it?
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post #6 of 12
Quote:
Originally Posted by Tleilaxu Ghola View Post
at 4.20 GHz stu will be getting about 77k per -bigadv assuming project 6900.

divide 77k by 4 = whaaat?

is you GPU going to get better than that number? if so fold it, if no then fold with you CPU unless you are doing stuff like testing or whatever.

this is not that hard is it?
Over complicating things.

Whether the PPD loss due to the GPU clients more or less than the loss of using 2 less cores is the important question.
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post #7 of 12
Quote:
Originally Posted by zodac View Post
Over complicating things.

Whether the PPD loss due to the GPU clients more or less than the loss of using 2 less cores is the important question.
yeah, but pulling 77k on your -bigadv WUs at 4.20 GHz is being elite..

-TG


on edit- he's only losing 1 core..you must have mixed your threads and cores up.
Edited by Tleilaxu Ghola - 1/15/11 at 8:05am
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post #8 of 12
He is not even losing 1 core... just 1 thread.

And dont worry about the total points it pulls for the unit, it would be much easier to consider PPD.

Figure the PPD lost by using only 7 threads and then see if the 2 GTX 460s add more than is lost... I guarantee you that they should give more than is lost.

Quote:
Originally Posted by stu. View Post
If I dedicate say, cores 0-6 for my i7 client, and then core 7 for my 2 GPU clients, will I see a PPD increase?
again, to answer the question, yes you will see an increase in PPD.
Dont even worry about doing any math. That would just be a waste of time.
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post #9 of 12
Thread Starter 
Sorry, I did mean 1 thread, not 1 core.

While my i7 and GPUs are spread across all threads, I am getting ~72k per bigadv unit. If I'm only going to get up to 77k with no cards running, it is much better to run my 2x 460s which pull 10k each (while fighting for CPU power).

I guess I will see what my PPD looks like in several hours and if anything has changed.

Thanks for the responses!

EDIT:

Quote:
Originally Posted by Tleilaxu Ghola View Post
at 4.20 GHz stu will be getting about 77k per -bigadv assuming project 6900.

divide 77k by 4 = whaaat?

is your GPU going to get better than that number? if so fold it, if no then fold with your CPU unless you are doing stuff like testing or whatever.

this is not that hard is it?
My GPU clients have been, and always will be, running. I'm going to fold with as much hardware as I have available. The question doesn't seem quite as simple as you make it out to be. I'm asking about dedicating specific cores/threads to each would increase my PPD instead of how I currently have everything accessing all cores/threads on my CPU.
Edited by stu. - 1/15/11 at 11:38am
 
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F@H
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post #10 of 12
Quote:
Originally Posted by k4m1k4z3 View Post
He is not even losing 1 core... just 1 thread.

And dont worry about the total points it pulls for the unit, it would be much easier to consider PPD.

Figure the PPD lost by using only 7 threads and then see if the 2 GTX 460s add more than is lost... I guarantee you that they should give more than is lost.


again, to answer the question, yes you will see an increase in PPD.
Dont even worry about doing any math. That would just be a waste of time.
I could not get the GPU client isolated to just a thread, it always wanted the whole core..?? I must have messed something up then, but then again my card is not really supposrted yet, and right now it's not worth it for me to fold on the GPU since I am ATI - if I could pull like 5000 PPD on a card to give up a thread it might be barely worth it, since each of my threads, in theory, are worth 4500 ppd at 4200 MHz.

I might look arounnd for a cheap NVIDIA folder and just throw it on, if it could push me over 40k PPD it just might be worth it. I might even be able to get one before the foldathon on the 24th..


-TG
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