Observations with i7's Multithread

[Snake_61 10]

Want to share a strange observation I recently made!

My Rig:

i7 920 @3.8GHz

8GB Ram

GTX285 (not o/c)

Win Vista64

NVidia 182.50

Arma with new 1.02 patch

"D:\Combat Land\ArmA2\arma2.exe" -nosplash -mod=@VOP

Playing the Campaign's Mission:"Dogs of war" and during a large battle,where a huge amount of units had to be worked by the CPU(s) to whole thing became a slideshow!I didn't turn FRAPS on so there are no FPS numbers here.

I saved a lot,didn't want to loose my progress and efforts (it was a realy hard work) - the saved files were about 80-90Mb big!

Strange thing is there where no CTDs!:bounce3:

4hours of playing and no probs at all!

But I was playing with "only" 4Cores!

Multithreading was disabled in BIOS.

So I left ArmA2 and rebootet my System,thinking of emptying the memory to get a smooth framerate.Since there were so many units I thought I'll reactivate all 8"Cores" in BIOS to gain performance.

Entered the battle again through my last savedgame and continued-everything was ok.

Than it happens!:mad:

CTD !

But even worse my recently made savedgames were gone,only older ones were present!I had to restart from the point before the battle.

I had this "cannot commit" thing and all my progress was lost!

Do not understand how the newer savedgames could be erased!?

And since then many CTDs followed!

Ok,so I disabled the 4Cores again, et voila it worked like a charme again...

No CTDs anymore...well a few only to be honest,but much less than with 8Cores.

Maybe this could be of some interest as a bug report?;)

And for other i7 users too?

[FraG_AU 10]

I think we have had some speculation regarding this prior, it HT and how the virtual cores may actually kill execution times.

To be honest AFAIK OS handles the HT, and whether Vista/Win 7 does something that kills the game engine I do not know.. I didn't get any extra FPS when I turned HT off (as some people report) but I won't discredit people who have.

[Lanthan 10]

I´m observing the same thing with almost the same machine!

[dias1995 10]

I have the same problem with same msg and sometimes CTD without warning and without msg :confused:

My Rig:

i7 920 @2.67

6GB Ram 1333Mhz

Assus GTX295

Win Vista64

NVidia 186.18

Arma with new 1.02 patch (58134)

"D:\Combat Land\ArmA2\arma2.exe" -winxp

[Ferrox 10]

I've not noticed this on my i7 system, but I'm running Windows 7, dont know if that would make any difference in handling the cores?

[bangtail 0]

Yep, Hyper Threading is causing problems in Win 7 64 and Vista 64 with A2. TBH, HT is a waste of time where gaming is involved. A2 is not the only game where it causes performance loss. Turning it off will also lower your CPU temps a little if you are overclocking.

There are numerous articles on it.

http://ixbtlabs.com/articles3/cpu/ci7-turbo-ht-p2.html

Eth

[Fansadox 0]

Im having CTD's with HT turned off

[McBacker 10]

As we already know, HT won't help in gaming so i keep it off... not a single CTD so far!

U guys with weird crashes should test your RIG for stability with OCCT, Lynx, Prime95...

[blackettle 10]

I get about 5 more FPS with HT left on with a stock speed i7 920. The only CTD I have had is when switching "profiles".

[bangtail 0]

I get about 5 more FPS with HT left on with a stock speed i7 920. The only CTD I have had is when switching "profiles".

That has NOTHING to do with HT.

Eth

[blackettle 10]

That has NOTHING to do with HT.

Eth

I did not say it did. I was indicating that I have no CTD while playing the game.

[bangtail 0]

I did not say it did. I was indicating that I have no CTD while playing the game.

Fair enough :)

[[kh]jman 49]

I have HT on and have not had one single CTD