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A commit that just landed in Mesa-git allows for 'radv', the open source Vulkan driver for AMD GPUs to use multiple devices.

This will likely be useful in future for people who have two (or maybe even more) GPUs to really push their games.

Support for things like that on Linux should improve as Vulkan evolves and is adopted by more developers. Just how useful this will end up being is the real question.

Using multiple GPUs in Vulkan is going to get easier with Vulkan-Next, where it's planned to have multi-GPU support in the API directly. So, you won't need Crossfire or anything like that, as developers will have access to all your GPUs directly from the API to spread the load.

You can see the commit here.

Is anyone here actually running a desktop with two AMD GPUs? Article taken from GamingOnLinux.com.
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15 comments

Leopard Jan 16, 2017
Even there are not so many dual gpu users around Windows area,at least they got support for this all that time.

That's good to know a feature like this supported.


Last edited by Leopard on 16 January 2017 at 10:50 pm UTC
haspadar Jan 16, 2017
I am an AMD fan and running 2 AMD GPUs (APU and a dedicated one) using mesa-git. So far so good.
pete910 Jan 16, 2017
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Samsai Jan 16, 2017
Well, I do have an APU and a dGPU on my laptop. Maybe that will actually turn out well after all.
imdan12 Jan 17, 2017
I am wait for Nouveau. Why Vulkan does not support for FOSS driver of Nvidia?
boltronics Jan 17, 2017
I've got two Fury X GPUs. Been looking forward to this for quite a while. This news has made my month! :D
zekesonxx Jan 17, 2017
I am wait for Nouveau. Why Vulkan does not support for FOSS driver of Nvidia?

Because nouveau doesn't have as big of a team behind it; and because Nvidia are a bunch of numpties who haven't released the firmware images needed to change the clock speeds on 9xx and 10xx GPUs, so no-one is using nouveau for the last two generations of Nvidia cards.
edo Jan 17, 2017
Well, I do have an APU and a dGPU on my laptop. Maybe that will actually turn out well after all.
Once vulkan 1.1 is out, I want to see people being able to use the power of the iGPU + dGPU, that would be great, supposing than it would be possible at all. But considering than bumblebee doesnt even support vulkan, so.....


Last edited by edo on 17 January 2017 at 5:13 am UTC
MayeulC Jan 17, 2017
I've got two Fury X GPUs. Been looking forward to this for quite a while. This news has made my month! :D
Meh. I don't mean to "cheer you down", but we also have to have games that support this feature. As far as I know, none does, as of yet (DOOM may, I am not sure, Ashes of The Singularity will probably if/when they do a Linux port). :)

(I'm jealous of your GPUs, btw :P )
ripper Jan 17, 2017
@liamdawe I'm noticing quite a few articles which are very similar to the ones Phoronix publishes (almost simultaneously). I'm wondering whether GOL is sourcing Phoronix, or Phoronix is sourcing GOL, or whether it's just a coincidence and both sites are following the same origin (in this case, mesa-dev list, git repo, etc)? Because none of the sites add a source to the other in any of the articles. I'm not trying to imply anything or mean something ill, I'm just genuinely curious.
Liam Dawe Jan 17, 2017
@liamdawe I'm noticing quite a few articles which are very similar to the ones Phoronix publishes (almost simultaneously). I'm wondering whether GOL is sourcing Phoronix, or Phoronix is sourcing GOL, or whether it's just a coincidence and both sites are following the same origin (in this case, mesa-dev list, git repo, etc)? Because none of the sites add a source to the other in any of the articles. I'm not trying to imply anything or mean something ill, I'm just genuinely curious.
More than happy to answer that!

Someone on reddit claimed i was "ripping off phoronix" so I decided to close that off once and for all and show a shot of it in my own personal inbox: http://m.imgur.com/a/bClKd

Public mailing lists are easy to follow.
MayeulC Jan 17, 2017
@liamdawe I'm noticing quite a few articles which are very similar to the ones Phoronix publishes (almost simultaneously). I'm wondering whether GOL is sourcing Phoronix, or Phoronix is sourcing GOL, or whether it's just a coincidence and both sites are following the same origin (in this case, mesa-dev list, git repo, etc)? Because none of the sites add a source to the other in any of the articles. I'm not trying to imply anything or mean something ill, I'm just genuinely curious.
More than happy to answer that!

Someone on reddit claimed i was "ripping off phoronix" so I decided to close that off once and for all and show a shot of it in my own personal inbox: http://m.imgur.com/a/bClKd

Public mailing lists are easy to follow.

Stop lying. It is a fact that you both have time machines and rip of each other's articles, to publish them even before the other publishes it. And since you delete your articles if they turn out to be wrong, the only stable configuration is the one in which you both publish an article that's ripped of the other, before anyone else is aware of it; probably even the patch author.

Isn't it blatantly obvious? </tinfoil>

Thanks for your articles :)
STiAT Jan 17, 2017
Nope. Most things are not capable of using multiple GPUs at all, so why bother buying a 2nd :D.
boltronics Jan 17, 2017
I've got two Fury X GPUs. Been looking forward to this for quite a while. This news has made my month! :D
Meh. I don't mean to "cheer you down", but we also have to have games that support this feature. As far as I know, none does, as of yet (DOOM may, I am not sure, Ashes of The Singularity will probably if/when they do a Linux port). :)

(I'm jealous of your GPUs, btw :P )

I'm happy enough to use them with Vulkan titles under Wine to start out with. At least then we don't have the chicken and egg problem - game developers not supporting multiple GPUs on GNU/Linux because nobody on GNU/Linux has multiple GPUs. ;)
ripper Jan 17, 2017
More than happy to answer that!

Someone on reddit claimed i was "ripping off phoronix" so I decided to close that off once and for all and show a shot of it in my own personal inbox: http://m.imgur.com/a/bClKd

Public mailing lists are easy to follow.

Thanks for your answer. I was wondering whether there's some rivalry going on by copying articles without sourcing, good to know it's not the case (at least from GOL side) :-)
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