Luthier-Will SLI be fixed in the patch?

Originally Posted by SKUD

Again agreed.
I believe if my 590 had 6GB (3GB each GPU) and same clock speed as my 580 it would get equal performance. Now the second GPU and the 1.5GB of memory it has is wasted. My precision tool also says both GPUs are going at it full bore. Trouble is I don't think they are splitting the work load, only doubling it. I believe SLI works by splitting the data stream sending half to each GPU and then recombining by interleaving the data after they have processed it. If the software isn't controlling that then both processors get all the data. Someone correct me if my perception is wrong.

I have 2x GTX 580 3gb (disabled SLI for CoD). I never come close to using the 3 Gb with CoD and I use 2650 x 1600 res on an SSD (helped slightly but not much). I believe just over 2 Gb vRAM is the max I have ever used. My GPU and CPU are never maxed out, and my RAM is never maxed out but the stutters are really a problem especially low or over cities. Proof the stutters are not from a lack of resources at least on my rig.

[Thee_oddball]

Originally Posted by Icarus1

I have 2x GTX 580 3gb (disabled SLI for CoD). I never come close to using the 3 Gb with CoD and I use 2650 x 1600 res on an SSD (helped slightly but not much). I believe just over 2 Gb vRAM is the max I have ever used. My GPU and CPU are never maxed out, and my RAM is never maxed out but the stutters are really a problem especially low or over cities. Proof the stutters are not from a lack of resources at least on my rig.

more rendering=more interop...more interop=more stutters

Originally Posted by Thee_oddball

more rendering=more interop...more interop=more stutters

Could you please expand your explanation. Thanks.

[RickRuski]

Icarus,

Thanks for your information, from what you have said it looks like lack of V/mem isn't the cause of stutters with CoD that a lot of us are getting. My two cards are only 1gb each and with CoD they are both using between 990mb--1007mb each (cards @1024mb each), no other games that I have come anywhere near this. RoF is using under 75% on each card, so I'm hoping the patch will address CoD's V/mem demand.

[Thee_oddball]

Originally Posted by Icarus1

Could you please expand your explanation. Thanks.

the game itself is not written in C++ but in .NET Interop is what happens when you go from managed to unmanaged code (speed tree's ,direct X...etc) which causes a performance hit.

here is a much more in depth explanation
http://forum.1cpublishing.eu/showthread.php?t=30774

Originally Posted by Thee_oddball

the game itself is not written in C++ but in .NET Interop is what happens when you go from managed to unmanaged code (speed tree's ,direct X...etc) which causes a performance hit.

here is a much more in depth explanation
http://forum.1cpublishing.eu/showthread.php?t=30774

Thanks.

From what I read the stutters are from badly/hastily coded software.
Not hardware issues. Correct?

[Thee_oddball]

Originally Posted by Icarus1

Thanks.

From what I read the stutters are from badly/hastily coded software.
Not hardware issues. Correct?

sloppy coding just exacerbates the problem...but the interop is still there even with clean code and if you read the latest update Luther said "reduced" and "decreased" not fixed! as I understand it this is just the nature of the beast....interop makes a performance hit whether it be minor or major.

A robust rig will show less of the issue but it will still be there