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Running both GPUs possible? - Page 3

post #21 of 31
What I would do, and have done since I used to fold ATI cards a couple years ago with a Phenom II. Set the affinity of fahcore_a3.exe to the first three cores of your CPU, this being 0, 1, and 2. Then set the affinity for the two fah whatever executables for the GPU folding client to core 3. I don't think two ATI cards will overwhelm the one core and impede their progress.
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post #22 of 31
Quote:
Originally Posted by SectorNine50 View Post
Wait, maybe I'm confused...

You want him to disable two cores on his processor?
I'll step back, I guess I'm not following what people are saying either, my apologies if I mislead.
Yes... the AMD GPUs need a core... if they don't get one, they will cripple the SMP performance to a level worse that what it would have if it was using one less core.

Quote:
Originally Posted by AvgWhiteGuy View Post
What I would do, and have done since I used to fold ATI cards a couple years ago with a Phenom II. Set the affinity of fahcore_a3.exe to the first three cores of your CPU, this being 0, 1, and 2. Then set the affinity for the two fah whatever executables for the GPU folding client to core 3. I don't think two ATI cards will overwhelm the one core and impede their progress.
No need for affinities with Win 7 and Core16; they work well together.

And yes, each AMD GPU needs a whole core.
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post #23 of 31
I say try it out. Fold everything as is for a while and get the ppd. It's gonna kill the gpus ppd though. Then set smp to -smp 3 and try again. Then try again with -smp 2 (leaving 2 cores for the GPUS). Then kill off smp folding, and do only GPU folding. Compare, contrast, and decide.
post #24 of 31
Quote:
Originally Posted by zodac View Post
And yes, each AMD GPU needs a whole core.
The ATI client definitely uses more CPU cycles than it should, but not a whole core's worth. IIRC, 1 client used ~30% or so of one back when I was folding with my 4870. There shouldn't be any issue with running 2 ATI clients on one core; it should have more than enough headroom, even without changing the environmental variables, which I would definitely recommend if you haven't already.

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post #25 of 31


This applies only to 5/6 series GPUs using the Core16 WUs. A core is needed.
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post #26 of 31
Hm, good to know

Quote:
Originally Posted by zodac View Post
Well, that didn't seem uncharacteristically condescending at all. At least I was basing it off of first-hand experience. Can't blame me for that.
Edited by aroc91 - 10/3/11 at 8:01pm
    
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post #27 of 31
I assumed your first-hand experience of me would be that I was condescending.
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post #28 of 31
Quote:
Originally Posted by zodac View Post
I assumed your first-hand experience of me would be that I was condescending.
That's pretty much our usual first-hand experience of you, zodac...

NOT that we aren't unusually prone to being condecscended to....and worthy of it in most cases.
post #29 of 31
Quote:
Originally Posted by zodac View Post
Yes... the AMD GPUs need a core... if they don't get one, they will cripple the SMP performance to a level worse that what it would have if it was using one less core.
Ooooh you mean disable a core within F@H, not actually disable the cores in the BIOS. That makes a lot more sense.
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post #30 of 31
Thread Starter 
So im still confused.

Im thinking that the best option would to be run -smp2 and dedicate a core in the both the GPU clients.... Thoughts?? Also I just installed FahMon and at the end of the day I should get a PPD read to see where I am at as far as PPD goes, because right now I have no clue.
 
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