-cpuCount and -exThreads

[zamani532]

What are appropriate values for both parameters, I have 8 physical cores and no virtual threads.

[MaSSive]

http://community.bistudio.com/wiki/Arma ... s#cpuCount

http://community.bistudio.com/wiki/Arma ... #exThreads

http://forums.bistudio.com/showthread.p ... -exThreads

8 physical cores? Bulldozer? It has 8 threads and 4 physical cores.

So it would be for you

Code: Select all

arma2oa.exe -cpuCount=4 -exThreads=7

That is not needed if you run beta, it should detect your cpu automatically and use this same values.

Moved to general hardware support.

[zamani532]

MaSSive;1775955']http://community.bistudio.com/wiki/Arma ... s#cpuCount

http://community.bistudio.com/wiki/Arma ... #exThreads

8 physical cores? Bulldozer? It has 8 threads and 4 physical cores.

So it would be for you

Code: Select all

arma2oa.exe -cpuCount=4 -exThreads=7

Moved to general hardware support.

Actually Bulldozer has 8 Physical cores and 8 Threads. Each bulldozer cluster contains 2 physical cores, but they share a FPU and share L2 cache. This is why everybody but you refers to it as a 8 core processor, 4 modules and 2 cores per module.

[MaSSive]

That is same a HTT. Those are virtual cores not physical.

Bulldozer Architecture Explained | Overclockers

[zamani532]

MaSSive;1775963']That is same a HTT. Those are virtual cores not physical.

Bulldozer Architecture Explained | Overclockers

It isn't HyperThreading. There are physically 8 cores on the die.

[MaSSive]

Its kinda hard to explain. Its 4 physical cores, and each of them having 2 virtual inside them.

Go ahead and try to start the game with -cpuCount=8 and say what do you get. While it might work, I doubt you will see any improvement.

[LITOralis.nMd]

If you have a FX 8120 or FX 8150, try
-cpuCount=6 -exThreads=7

however, the -exThreads=7 doesn't always do anything for your FPS.

Reports show it's important to have 1GB of RAM dedicated per CPU.

-cpuCount=4 -maxmem=4096 seems to be the perfect pairing for your CPU.

[zamani532]

I tried -cpuCount=4 and -cpuCount=8 and I get 40% improvement with -cpuCount=8. Looks like I'll do -exThreads=7 and -cpuCount=8

[MaSSive]

I tried -cpuCount=4 and -cpuCount=8 and I get 40% improvement with -cpuCount=8. Looks like I'll do -exThreads=7 and -cpuCount=8

And what happens if you start the game without that switches and -maxMem=8192 ?

Only do that if you have 8gb if not put there maximum you have. But afaik any value higher than 2047 will fall down to that value. Its a limitation in game engine.

Try and run tests in that way see what happens. Btw how did you measure that values? 40%?

[zamani532]

I measured with the ArmA2 OA benchmark. 70FPS with Cpucount=8 and 55FPS with Cpucount=4

If I don't put in any switches I get 65. Go figure.

[LITOralis.nMd]

Did you test out the

Cpucount=8 -exThreads=7

combination? What were results in the benchmark?

[zamani532]

Did you test out the



combination? What were results in the benchmark?

I used that combination in both benchmarks.