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How to run LinPack stress test(LinX/IBT)properly-an explanation(maybe a guide) - Page 10

post #91 of 128
HT ON (never want to run with it off, just personal preference)
voltage 1.312 as read by CPU-z.
191x21. llc on

The guide boy_lah produced takes an interesting approach, after I reapply my TIM i think i'll try it out..vcore is stil higher than i'd like. I'd expect 3.12 for a 200bclk
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post #92 of 128
Adding a second fan to my megahalems (diff brand/speed etc) brought my temps down by 3'C. Nice diff. Moving my further case away from rear wall also helped. Hmmm...getting 69-70C w my 4.2Ghz w LLC ON, HT OFF. Nice! May turn HT back on at these temps.

And I'm getting 61gflops vs my calculated 67. 91%. I'm strangely getting stuff right.
Edited by boy_lah - 5/13/10 at 4:10pm
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post #93 of 128
I have sent you a PM but I am not sure you got it. I am not sure my math skills are high enough to make the calcs, but I was wondering which "Problem Size" should I run with Linx:

I have an i7-930 currently OC'ed @ 4.0 Ghz and my system sports the usual 6GB RAM.

Thanks for your time.
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post #94 of 128
How do you guys apply your TIM ?
post #95 of 128
I was confused why my E8400 @ 4GHz overclock would pass Linpack, but fail Orthos within 3 mins, now I'm not so confused anymore ... thanks for this valuable guide
Edited by Lemmy - 6/15/10 at 9:25pm
post #96 of 128
This is terrific thread, and I hope it's still active. Thanks to PERSPOLIS who started it.

Having read the entire thread, I'm still confused about how to set the memory in LinX. I have an i7 940 with 6000MB of memory, and my OS is Vista64.

This is what Task Manger shows when I open it up after Vista64 has been logged into and then idled for about 10 minutes. I have a lot of cached memory.




Where do I go from here? How do I determine the amount of memory to plug into LinX to run a stability test? I could use some help.

Thanks.
LL
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post #97 of 128
Quote:
Originally Posted by EverMore View Post
This is terrific thread, and I hope it's still active. Thanks to PERSPOLIS who started it.

Having read the entire thread, I'm still confused about how to set the memory in LinX. I have an i7 940 with 6000MB of memory, and my OS is Vista64.

This is what Task Manger shows when I open it up after Vista64 has been logged into and then idled for about 10 minutes. I have a lot of cached memory.

<img snip>


Where do I go from here? How do I determine the amount of memory to plug into LinX to run a stability test? I could use some help.

Thanks.
Welcome to OCN!

In the screenshot you posted, LinX was telling you that you have 4629MB of physical RAM so you can use anywhere between 2400MB and 4629MB without dipping into virtual memory.

In the original post, PERSPOLIS stated this:
Quote:
That's why I believe a test run with 2400mb of physical ram is better than one with 3200mb of physical & virtual ram combined.
The key point here is to determine the highest amount of PHYSICAL RAM without forcing Vista to use its paging file.
A simple way to avoid all of this worry is to disable virtual memory temporarily.

Or, a simpler way is to run LinX for about 30 seconds with maximum RAM and then stop it - that generally tends to clear up a lot of RAM for you to play with.

Hope that helps.


Offtopic: Task manager is showing 8 cores on your CPU o_O
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post #98 of 128
Just found this thread. Thanks PERSPOLIS
Quote:
Dualcore @ 3 GHz:3X8=24 GIGAFLOPS
4GHzx8=32
So if I'm running at 4050MHz[4x8](e8400/CO-6), I should have a GFlop of 32?
I'm only at 26.4GFlops average. Overhead of 6 GFlops?

Quote:
IntelBurnTest v2.4
Created by AgentGOD
----------------------------

Processor: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
Clock Speed: 4.04 GHz
Active Physical Cores: 2
Total System Memory: 4094 MB

Stress Level: Custom (3000 MB)
Testing started on 7/8/2010 10:49:55 AM
Time (s) --- Speed --- (GFlops) --- Result
[10:53:15] 183.515 -25.9986 -3.771514e-002
[10:56:30] 179.397 -26.5954 -3.771514e-002
[10:59:45] 179.089 -26.6411 -3.771514e-002
[11:03:01] 180.240 -26.4710 -3.771514e-002
[11:06:15] 178.361 -26.7498 -3.771514e-002
Testing ended on 7/8/2010 11:06:15 AM
Test Result: Success.
Should I drop CPURefv more?I move CPU-reference-voltage in either direction and the GFlops become erratic or get lower. Right now my CPURefv is .760=.835. If I go either direction on VTT1.32(.055 from Vcore1.375) my speed slows...

Going to go run test again, but with a 10 pass.
Edited by PDXMark - 7/16/10 at 11:33am
post #99 of 128
Quote:
Originally Posted by [Adz] View Post

The key point here is to determine the highest amount of PHYSICAL RAM without forcing Vista to use its paging file.
A simple way to avoid all of this worry is to disable virtual memory temporarily.

Or, a simpler way is to run LinX for about 30 seconds with maximum RAM and then stop it - that generally tends to clear up a lot of RAM for you to play with.


Offtopic: Task manager is showing 8 cores on your CPU o_O
Adz

Thank you. What threw me was the "Free" physical memory displayed in Task Manager. So when running LinX in Vista64, the memory size in LinX will be one of the selections that is less than the Available Physical Memory displayed by LinX. The running LinX for about 30 seconds sounds like the best way for me to determine the memory size and then plug it into LinX.

About your Offtopic question. Task Manager in Vista64 displays the activity in the physical cores and the virtual cores created by having Hyper-Threading enabled in the BIOS. I have Hyper-Threading enabled.

Also when I run Prime95 with Hyper-Threading enabled, Prime95 displays the test progress in these Hyper-Threading cores, too.
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post #100 of 128
Adz

I ran LinX for ~30 seconds with the LinX suggested memory of 4719MB.

B4 I ran LinX my Free Physical memory in Task Manager was ~2000MB.

When I stopped LinX, the first Free Physical Memory that was shown In Task Manager was was 5258Mb which then slowly stabilized to ~2600MB.

After closing LinX and starting it again, it showed Physical memory available of 5253MB.

Am I correct in my conclusion that I have range of Physical Memory from between 2600MB and 5200Mb for stability testing in LinX. My inclination is to just use about 4000MB. I am curious about whether there is an amount of memory within the range, perhaps less than 4000MB, that represents a sweet spot for testing. I am looking for an amount that will lend sufficient validity to the test at the least amount of stress; i.e. overkill or unnecessary stress on my system.

Thanks again for your help.
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