NVIDIA Working on Tile-based Multi-GPU Rendering Technique Called CFR - Checkered Frame Rendering

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Nov 21, 2019.

  1. Dribble

    Dribble Member Guru

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    The basic problem is it's now down to the game devs. DX11 multigpu was mostly done in drivers, so it was down to the gpu driver writers (i.e. AMD/Nvidia). The low levelness of DX12/Vulcan moves most of that work over to the game devs. For a lot of game devs it's too hard and just not worth the effort. Hence no Sli/Xfire. In one sense they are lazy. Alternatively you could argue that the shift to low level api's has made the driver writers lazy - now their job is really simple as they've pushed a lot of the work they used to do over to the game devs.
    Imo that's part of the reason AMD pushed low level api's so hard. DX11 and other high level api's mean gpu drivers are complex and because Nvidia had more people they would do a better job. Mantle and now Vulcan/DX12 pushes that job over to the game devs and makes driver writing simple so it effectively evens the driver writing field which suits AMD.
     
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  2. fry178

    fry178 Maha Guru

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    @Netherwind
    And was gonna say, except more recent cards like the 7/900 series.
    Just was surprised when ppl were getting a 460 to do sli later, instead of getting the next level up, even those cut versions like a SE model.
     
  3. Yxskaft

    Yxskaft Maha Guru

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    Alot of modern DX11 games don't support SLI/Crossfire anymore either though, the reason given by AMD and Nvidia being it's not viable anymore with the various newer techniques games are using today.
     
  4. angelgraves13

    angelgraves13 Ancient Guru

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    This is obviously for Ampere or Hopper. Guess we're getting MCM late next year with either Ampere or Hopper. I've heard rumors that Ampere won't even be coming out for consumers, and that it's basically like Volta. So I guess we're getting Hopper late next year and the 2080 Ti Super will be the best of the best next year for some time.
     
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  5. Dragam1337

    Dragam1337 Ancient Guru

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    Which is untrue... they simply don't bother putting in the work... see metro exodus for instance, works great with sli once you have done the work yourself.

    Even in the new assassins creed games there is near perfect sli scaling if you force it on, but ofc it flickers cause they havent bothered making sli profiles for them.

    In Battlefield 5 there is no official sli support, but the game has perfect sli scaling if you use the bf4 sli profile...
     
  6. Dragam1337

    Dragam1337 Ancient Guru

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    I really hope this isn't true... i can't really see it being true either tbh.
     
  7. fry178

    fry178 Maha Guru

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    More plausible than not.
    They make money on the non-consumer stuff, so you wont always get a regular gpu, especially if they have good yields on chips and dont need to sell them as a cut down/lesser unit.
     
  8. GamerNerves

    GamerNerves Member Guru

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    The utilization of this innovation with chiplet design is a good guess, but returning of SLI is also a possibility. The problem is always about the game developers not wanting for sensible reasons to put the extra effort to support multi GPU configurations, but this new approach seems simpler to me and could work well on a driver level. The aim is surely to make games run at 4K better and today there are many well earning enthustiastic customers who would certainly buy another GPU if it only could help with this resolution. Nvidia is surely after the big bucks with this. I have nothing more exact to say, but this feature certainly is something to keep eye on and it will bode well for Nvidia soon enough.
     
  9. fry178

    fry178 Maha Guru

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    the market for single (even big) gpus is bigger than that.
    not even if i look globally, just india and china: how many Millions will buy gpus just in those 2 countries.
    i doubt you will have a lot more ppl buying one card, just because of the cost involved.

    and like many others, not against sli, but if i can have a single card, i prefer that (better cooling, smaller psu, less power wasted).
    and you dont generally get 2x the performance vs a single card.
    again, looking at ALL players AND ALL games,
    not just the 20 or maybe even 50 out of how many pc games?

    last, with multi cards no one will run 720p, so you need vram, which right now is only on the ti going past 8gb,
    so im still buying the biggest/most expensive card, just to have the amount of vram needed, to really make a use of the horse power.
     
  10. Astyanax

    Astyanax Ancient Guru

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    nah, its for nvlink.

    original sli just doesn't have the bandwidth to do checkerboard.
     

  11. angelgraves13

    angelgraves13 Ancient Guru

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    SLI is dead.
     
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  12. Dragam1337

    Dragam1337 Ancient Guru

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    It isn't...

    Star wars jedi fallen order was released with day 1 sli support one week ago.

    [​IMG]

    [​IMG]

    And with most games that doesn't officially support sli, you can make it work with custom sli profiles.
     
    Last edited: Nov 22, 2019
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  13. DeskStar

    DeskStar Master Guru

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    Hence most support went way of the dodo after os updates/driver releases.

    Is updates as in from windows 7 through 10 support was lost for sure....
     
  14. Zak Sevenocevan

    Zak Sevenocevan New Member

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    Did someone return to the 90a and unboxed later generation of 3dfx?

    Checkered technic is not new. But I guess there is a SLI cycle until single card beat them again. Then current generation plato go back to multi GPU...etc.
     
  15. angelgraves13

    angelgraves13 Ancient Guru

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    Well if this tech works like I think it's supposed to...you won't need SLI. You won't need to have profiles or worry about performance scaling. It should just work on the silicon level.
     

  16. pharma

    pharma Maha Guru

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    According the the 3DCenter thread, it does show a 40-50% FPS increase in games tested using two RTX 2080Ti@4K.

    Metro Exodus (DX11/DX12) works (DLSS not compatible!)
    BattleField V (DX11/DX12) not compatible
    Borderlands 3 (DX11 works, DX12 crash)
    Chernobylite (DX11) works
    Crysis 3 (DX11) works
    Shadow of the Tomb Raider (DX12 doesn't start, DX11 works)
    Deus Ex Mankind Divided (DX12 doesn't start, DX11 works)
    GRID (2019) (DX12) crash
    Control (DX12) stability problems
    F1 2019 (DX12) crash
    Hitman 2 (DX11+DX12) (Visuel problems,flicker)
    Forza Horizon 4 (DX12/UWP -> crash BSOD)
    The Elder Scrolls Skyrim SE (DX11) (no scaling)
    Final Fantasy XV (DX11) (no scaling)
    A Plague Tale Innocence (DX11) works
    Mafia III (DX11) works
    Monster Hunter: World (DX11) crash
    Tomb Raider (2013) (uneven GPU)
    Middle Earth Shadow of Mordor (DX11) works (shadows show sometimes problems)
    Devil May Cry 5 (DX11) works
    Quantum Break (DX11) (no sclaing)
    Resident Evil 7 (DX11) works
    Far Cry 5 DX11 (Terrain flickers)
    Resident Evil 2 Remake (DX11) works
    The Division II (DX12) (works, z-fighting and framepacing-problems)

    https://www.forum-3dcenter.org/vbulletin/showpost.php?p=12144578&postcount=3586

    Edit: Curious how his testing didn't need NVLink, though bandwidth is likely compromised.
     
    Last edited: Nov 22, 2019
  17. SuperAverage

    SuperAverage Master Guru

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    I remember a card called the xgi volari v8 I think, and I think it used tiled rendering.
    Or it was another defunct gpu maker at around the same time.
    Had some AA or shading, or both, issues due to the tiling. Been a while, can't remember
    Some console used it too back in the day.
     
  18. Dragam1337

    Dragam1337 Ancient Guru

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    All those games work perfectly with old AFR.

    Bf5, shadow of the tomb raider, etc, all show 70-95% sli scaling.

    [​IMG]

    [​IMG]

    (Fps capped at 58 in rtss on the last screenie)
     
    Last edited: Nov 23, 2019
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  19. JJayzX

    JJayzX Master Guru

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    Why does everyone think using chiplets mean it will be run as sli or some sort? All it is is just splitting up the parts of the gpu to make it easier and cheaper to create a variety of gpus and gain more yield.
     
  20. geogan

    geogan Master Guru

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    Really? can you play latest versions of DICE games eg BF5, using latest Frostbite engine or are you talking about older games running older Frostbite versions like BF3 or BF4. I think that is the reason why your 5 year old computer can run "supported" games - because maybe these games are old and use the older APIs and game engines.
     
    Last edited: Nov 26, 2019

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