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post #1541 of 2282
LOL, it happened to me too, some google-ing solved it..
 
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post #1542 of 2282
When I was a young boy I found out that hyper threading should be disabled.
Maybe it is still like that. I haven`t run IBT for a while, esp. since it is not the right way to test stability.
But anyway, since it is winter and getting cold I let it run for a while to heat up the room. thumb.gif
Global warming, here I come biggrin.gif
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post #1543 of 2282
Quote:
Originally Posted by Mr.Eiht View Post

When I was a young boy I found out that hyper threading should be disabled.
Maybe it is still like that. I haven`t run IBT for a while, esp. since it is not the right way to test stability.
But anyway, since it is winter and getting cold I let it run for a while to heat up the room. thumb.gif
Global warming, here I come biggrin.gif

Was that before C2D?
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post #1544 of 2282
I discussed with a member ~1year ago (was it Blameless?).
He got low GFLOPS so I checked the documentation of Linpack and there I found that hyper threading should be disabled.
Found it, from 4/24/11:
Quote:
Originally Posted by Mr.Eiht View Post

The documentation from intels linepack says this:

"Intel Optimized LINPACK Benchmark is threaded to effectively use multiple processors. So, in multi-processor systems, best performance will be obtained with Hyper-Threading technology turned off, which ensures that the operating system assigns threads to physical processors only."
(From section 11 of the user's guide)
If the documentation say so we have to obey biggrin.gif
The discussion was with Sir. BradleyW not Mr. Blameless.
I quoteed some other stuff from the documentation there as well.
Dear lord I guess I was really desperate, why would ANYONE read the documentation of LINPACK???
tongue.gif
Edited by Mr.Eiht - 11/2/12 at 5:53am
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post #1545 of 2282
Ah, a GFLOP decision..thumb.gif
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post #1546 of 2282
I found the reason I was originally showing low GFlops was that I had IBT set on all threads. If I changed it to match the number of cores on my processor it almost doubled.
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post #1547 of 2282
Quote:
Originally Posted by BiaBia View Post

I found the reason I was originally showing low GFlops was that I had IBT set on all threads. If I changed it to match the number of cores on my processor it almost doubled.

What is your CPU clock? How much your gflops exactly?
 
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Ol' Beast
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post #1548 of 2282
Quote:
Originally Posted by MykaAurora View Post

What is your CPU clock? How much your gflops exactly?

It's clocked to 4.8g and I'm around 160 GFlops when I set IBT to 6 threads.
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post #1549 of 2282
Quote:
Originally Posted by BiaBia View Post

It's clocked to 4.8g and I'm around 160 GFlops when I set IBT to 6 threads.

I haven't used IBT for quite a while but your processor has 6 cores and 12 threads. Theoretically using 12 threads should be much better but its probably IBT's fault.

In other news. I have a new 3930k incoming so expect a shake up in the leaderboard! Fingers crossed for the silicon lottery.
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post #1550 of 2282
Quote:
Originally Posted by Jokah View Post


In other news. I have a new 3930k incoming so expect a shake up in the leaderboard! Fingers crossed for the silicon lottery.

2566861.png

Bring it....thumb.gif
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