Sajin

squall-leonhart
Sajins profile is garbage. (Sorry Sajin, but its fact)
 
You cannot force SLI on Vulkan or DX12 api's, the Driver has no capability to make this work and RDR2 has no DX11 renderer.
 
It's already been demonstrated by a 1080ti user that Vulkan MGPU can work, but it requires specific in game settings, play around with them and see if you can get it to.

No offence taken. What is the point of Vulkan MGPU if you have to run certain settings to make it work? MGPU should work at all settings not just certain ones.

Agreed it should be able to use all the available settings, but some things are harder to parallize across device nodes than others.
 
I am wondering what the go is with some getting MGPU out of the box, and others not getting it at all
 

"Berke53, post: 5728125, member: 249722"GTX 1080 SLI owner here. Apparently this game supports multi gpu using the vulkan api out of the box. Both cards are pegged at 99% and performance is increased by an average of 60%. However... In some areas there seem to be some flickering and performance issues with a mgpu config. Also.. The afterburner OSD is flckering constantly. Its really interesting to see this as this is the first vulkan game utilizing both cards. Apparently rockstar wanted to support mgpu rendering in this title but they only came half way. I really hope they keep coding improvements for this as it is not a luxurity to have more than one gpu for this incredibly gpu hungry game.

 

I'm gunna try to get more info from him.
 
Its possible the game uses implicit mgpu and needs sli disabled in the nvcp.

So we can't play RDR2 at 4K60? :/
 
I tried the profile trick on my 1080s - didn't work.
 
...what's the point...

Getting my terminology wrong,
 
Explicit and Implicit are both LDA (requires SLI)
Game might incorporate MDA, SLI enabled would lock support to LDA methods and prevent MDA working.

CraptacularOne

kevinc313

CraptacularOne
Everything maxed getting 70+ fps in game, upwards of 90-100 when in towns that don't have a bunch of alpha and particle effects like snow. Running on a single RTX 2080 Ti at 3840x1080 ultrawide. 
 

 

You're at about 10% more pixels than 1440p.  Typical 4K will be DOUBLE the pixels and give 45fps with a 2080Ti in RDR2 with max settings.

Are you really trying to state that in bold like I don’t know the pixel count Of 4K? Seriously? 

8,294,400 Pixels in 3840x2160 so you saying that 3840x1080 is a very high resolution is not very accurate. It also has nothing to do with the question of running SLI which would truly benefit people actually running VERY HIGH resolutions like 3840x2160. You just wanted to show off your low vertical resolution ultrawide and your 2080ti I guess. It has nothing to do with this topic. 

joeymir
Been eagerly awaiting this title, however I am just looking for feedback from others with Multi-GPU systems and see if it has SLI support. From what I am gathering, the answer is no or limited, however that was not a good source. From what performance numbers look like for this game, I'd be disgusted to see it not have day 1 SLI/Crossfire support knowing how demanding it is and how much it could benefit from SLi/Crossfire. But knowing how the industries state of affairs......it would not surprise me if SLI/Crossfire were both non-functional. Anyway hope to hear feedback from those who have tried.

I said this in another thread, but I'll say it here.  Knowing Rockstar they have one or two settings that completely kneecap the game's performance but have zero impact to the graphical quality of the game.  One of the big offenders is the GRASS settings in GTA V.  I think they are just trolling us in the vein of "will it run Crysis".

if shadow of the tomb raider works dx12 sli, why cant read dead

kevinc313

joeymir
Been eagerly awaiting this title, however I am just looking for feedback from others with Multi-GPU systems and see if it has SLI support. From what I am gathering, the answer is no or limited, however that was not a good source. From what performance numbers look like for this game, I'd be disgusted to see it not have day 1 SLI/Crossfire support knowing how demanding it is and how much it could benefit from SLi/Crossfire. But knowing how the industries state of affairs......it would not surprise me if SLI/Crossfire were both non-functional. Anyway hope to hear feedback from those who have tried.

I said this in another thread, but I'll say it here.  Knowing Rockstar they have one or two settings that completely kneecap the game's performance but have zero impact to the graphical quality of the game.  One of the big offenders is the GRASS settings in GTA V.  I think they are just trolling us in the vein of "will it run Crysis".

Yep, the games meant to be run on mostly high with current gen and grass/volumetric and particles on medium.
 

Sajin
SLI on, or SLI off with the original profile does nothing.

i'll let you know if i find new info

CraptacularOne

stash51
CAPS, not bold smart guy. And quit going off topic with your nonsense.

You've joined this forum almost 11 years ago and you saved your first post to make an OFF TOPIC comment about me not staying on topic? Really? Caps or bold, same difference. He was trying to imply that I didn't realize the difference. No go back to your hole and stay there. I'm am adding to this conversation by giving single card metrics to compare to in a high end system. 
 
 
@ Sajin, I think something is a bit off with your system's performance. I just rand a quick 4K test to compare and I'm getting significantly better results with the same settings you used.
 
These are my "built in" benchmark results at 4K

 
And just a quick snap of actual in game performance

 
In game fps seems to fluctuate between 50-70fps at 4K with everything maxed for me. Though to be fair I've only just played about 10 mins at 4K on my other monitor as I greatly prefer the ultrawide experience. 

Probably old cpu syndrome. You overclocking your gpu? I did another run and was able to pull off a 42 average.

Sajin

CraptacularOne

stash51
CAPS, not bold smart guy. And quit going off topic with your nonsense.

You've joined this forum almost 11 years ago and you saved your first post to make an OFF TOPIC comment about me not staying on topic? Really? Caps or bold, same difference. He was trying to imply that I didn't realize the difference. No go back to your hole and stay there. I'm am adding to this conversation by giving single card metrics to compare to in a high end system. 
 
 
@ Sajin, I think something is a bit off with your system's performance. I just rand a quick 4K test to compare and I'm getting significantly better results with the same settings you used.
 
These are my "built in" benchmark results at 4K

 
And just a quick snap of actual in game performance

 
In game fps seems to fluctuate between 50-70fps at 4K with everything maxed for me. Though to be fair I've only just played about 10 mins at 4K on my other monitor as I greatly prefer the ultrawide experience. 

Probably old cpu syndrome. You overclocking your gpu? I did another run and was able to pull off a 42 average.

Yeah the 2080Ti is running at roughly 2Ghz for gaming settings with 16000Mhz memory. What CPU are you running?

There is some good info in this thread and a lot of garbage at the same time.
 
First, this is NOT the first game to utilize MGPU with Vulkan API. That honor goes to Strange Brigade which works perfectly well out of the box with the Vulkan API (see video).
 
Sajin's profile is pretty good in non-snowy areas (Ch. 2 and later). In the snowy areas, or anywhere there is snow overlapped with hard rock/mountains etc., the flickering and artifacting are severe. There are also occasional CTDs that occur due to forcing MGPU.
 
Word on the street from a special someone I know states that Nvidia intentionally gimped MGPU for this title with the latest driver. It apparently is disabled in the driver flag.
 
The only solution I can think of is rolling back to the previous driver and trying Sajin's profile and seeing if it works.
 
However, at the end of the day, this game's MGPU support/implementation is pile of junk - there is simply too much artifacting, CTDs, stuttering etc. to make the game playable with more than one GPU.
 
I have had 4-way SLI since 2011 and have owned every Titan GPU (4 of them, each time around, except for Titan V & Titan RTX which I have only two).
 
Until/unless Nvidia enables MGPU support at the driver level for this game and/or Rockstar spend some actual resources into implementing it, I don't see MGPU being viable for RDR2.
 
Consoles ruined PC gaming. And now, Nvidia themselves are gimping support since they want to sell more GPUs every generation (thereby discouraging people buying/using multiple GPUs over several generations).
 
Nvidia - 1
PC Gamers - 0
 
Strange Brigade Vulkan API utilizing 2x Titan RTX beautifully (> 230fps maxed out in 4K): 
 
https://www.youtube.com/watch?v=69NlalVbXJU

Sajin
 
 
5960x @ 4.4 GHz.

Hmm, granted I have double the core count you do but that shouldn't really matter since this game does not really scale past 8 threads anyway. I only have a 200Mhz advantage in clock speed too. Regardless of that though at 4K you should be completely GPU bound anyway. Are both your cards running at X16 link width and are they overclocked at all or stock speeds?

Can't seem to get the profile working on my 2x 2080 Ti's either, game loads up to the munu and afterburner shows the load is being split between the two and both cards are clocking up and down. But as soon as I try to continue the story or run a benchmark the game hardlocks with a black screen and either crashes to the desktop, or I have to force end it via the task manager.
 
Tried a few ways of getting this profile to work and same results everytime 
 
Using the current 441.12 driver.

CraptacularOne

Sajin
 
 
5960x @ 4.4 GHz.

Hmm, granted I have double the core count you do but that shouldn't really matter since this game does not really scale past 8 threads anyway. I only have a 200Mhz advantage in clock speed too. Regardless of that though at 4K you should be completely GPU bound anyway. Are both your cards running at X16 link width and are they overclocked at all or stock speeds?

Yes, my initial posted results were at stock clocks, but I also had sli enabled when I ran with a single gpu, turning off sli, and overclocking gave me a 42 fps average.

I imported this profile but it is not working. Do I need to roll back driver?