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post #311 of 396
I guess the real test would be running my 5870s in my 3770k rig.. but would be crazy hassle to test that so we'll never know biggrin.gif
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post #312 of 396
Quote:
Originally Posted by Doc_Gonzo View Post

I'm equally curious as to why my 7850 pulls as many points as the higher end cards thinking.gif. Maybe it mated with my 3570K and produced some kind of freaky hybrid monster biggrin.gif

you get gpu usage in the 90s right the 7900s max out gpu usage at 85% or lower no matter how many tasks my runs 83% then drops to 75% and goes back to 83%

post #313 of 396
Quote:
Originally Posted by Bal3Wolf View Post

you get gpu usage in the 90s right the 7900s max out gpu usage at 85% or lower no matter how many tasks my runs 83% then drops to 75% and goes back to 83%

So basically either

1. POEM isn't coded to take full advantage of the 7900 cards or
2. There is some other limiting factor.

I'm thinking it is more to do with a limiting factor somewhere.

Thanks to Phobos' experience we know that CPU speed has a effect, however Doc's 4.5 GHz Ivy is a reasonable match for Bal3's 5 GHz Sandy so that doesn't explain the differences.

From my experience the PCIe speed also has an effect. Bal3 is running a PCIe 2.0 CPU, Doc a PCIe 3.0. I wonder if that would explain the difference?

Edit: Doc_Gonzo has the 7850, not Biorganic. doh.gif
Edited by GingerJohn - 11/8/12 at 9:21am
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post #314 of 396
Quote:
Originally Posted by GingerJohn View Post

So basically either
1. POEM isn't coded to take full advantage of the 7900 cards or
2. There is some other limiting factor.
I'm thinking it is more to do with a limiting factor somewhere.
Thanks to Phobos' experience we know that CPU speed has a effect, however Bio's 4.5 GHz Ivy is a reasonable match for Bal3's 5 GHz Sandy so that doesn't explain the differences
From my experience the PCIe speed also has an effect. Bal3 is running a PCIe 2.0 CPU, Bio a PCIe 3.0. I wonder if that would explain the difference?

My guess poem is badly coded cause no way it can max out pcie 2.0 at 8x or 16x. If it was a bandwidth issue our memory clocks on the ddr would be more important im running 16gigs of 2133@10-11-10-30 that should be plenty fast for anything.
post #315 of 396
My GPU usage always seems to be between 86 - 89% - but yes, it is slightly higher than the 79** series cards. I think it dips to about 84% sometimes, maybe when completing a task and starting another and it is always the same with 6, 5, and 4 tasks. I can't remember what it was at for 1, 2 and 3 tasks.
 
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post #316 of 396
Quote:
Originally Posted by Bal3Wolf View Post

My guess poem is badly coded cause no way it can max out pcie 2.0 at 8x or 16x.

See that is what I thought, but pulling my sound card and letting my 7950 run at x16 rather than x8 dropped my times by 25%.
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post #317 of 396
Quote:
Originally Posted by GingerJohn View Post

See that is what I thought, but pulling my sound card and letting my 7950 run at x16 rather than x8 dropped my times by 25%.

yea thats wierd it must be badly coded way it handles the cpu and gpu work.
post #318 of 396
Quote:
Originally Posted by GingerJohn View Post

Quote:
Originally Posted by Bal3Wolf View Post

you get gpu usage in the 90s right the 7900s max out gpu usage at 85% or lower no matter how many tasks my runs 83% then drops to 75% and goes back to 83%

So basically either

1. POEM isn't coded to take full advantage of the 7900 cards or
2. There is some other limiting factor.

I'm thinking it is more to do with a limiting factor somewhere.

Thanks to Phobos' experience we know that CPU speed has a effect, however Bio's 4.5 GHz Ivy is a reasonable match for Bal3's 5 GHz Sandy so that doesn't explain the differences

From my experience the PCIe speed also has an effect. Bal3 is running a PCIe 2.0 CPU, Bio a PCIe 3.0. I wonder if that would explain the difference?

I am running a 2700k. I got a package discount on the z77mobo + 2700k at microcenter. (if wondering why I got z77). 4.4 GHz should be enough, even on sandy, my cpu runs from 33-37% with spikes up to 45%. We could set our CPU clocks to the same GHz, run 4 tasks, CPU set to 1.0, and set our 7950 clocks the exact same and see how similar WU times are. Could show us if there is some other limiting factor.

@GJ, it is apparent that for whatever reason, POEM does not like bandwidth limitations, We need someone to run dual 7000 series cards in x8 and see what their WU times are. Maybe Deegon.

This still does not explain the point discrepancy between the 79xx and 78xx, unless we are bandwidth limited... Or POEM must not be utilizing all the shaders efficiently. We should let them know in their forums
Edited by Biorganic - 11/8/12 at 9:29am
     
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post #319 of 396
Quote:
Originally Posted by Biorganic View Post

I am running a 2700k. I got a package discount on the z77mobo + 2700k at microcenter. (if wondering why I got z77). 4.4 GHz should be enough, even on sandy, my cpu runs from 33-37% with spikes up to 45%. It still does not explain the point discrepancy between the 79xx and 78xx. POEM must not be utilizing all the shaders efficiently. We should let them know in their forums

Sorry, I got confused - I was talking about Doc_Gonzo, not you doh.gif

He is running a 7850 on PCIe Gen 3.0 and getting similar points to 7950's running on PCIe Gen 2.0.
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post #320 of 396
Quote:
Originally Posted by Biorganic View Post

I am running a 2700k. I got a package discount on the z77mobo + 2700k at microcenter. (if wondering why I got z77). 4.4 GHz should be enough, even on sandy, my cpu runs from 33-37% with spikes up to 45%. It still does not explain the point discrepancy between the 79xx and 78xx. POEM must not be utilizing all the shaders efficiently. We should let them know in their forums

pretty much same cpu usage i get i made a thread a few days ago but no one has answerd lol maybe if more of us post someone will look into it.
http://boinc.fzk.de/poem/forum_thread.php?id=837
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