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Luoshuang's GPULightmass

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    Originally posted by ZacD View Post
    For tasks where the Quadro doesn't have specific driver/hardware exclusive advantages, the GTX 1080 is 50-100% faster than a single M6000, depending on the benchmark.

    Also the M6000 is a generation behind the GTX 1080 in terms of architecture.
    What would be a good card (or rig) to get for GPU lightmass baking that would be faster then a 1080? A titanXP? I need to decrease my build time for a project. Would CPU make any difference in this scenario? i7 vs Zenon?

    Thanks,
    Dustin Tinkler

    https://www.artstation.com/dustomatic

    Comment


      Titan V or use swarm distributed rendering on multiple PCs.

      Comment


        Originally posted by ZacD View Post
        Titan V or use swarm distributed rendering on multiple PCs.
        I wonder if the V's HBM2 memory would improve performance or not.. Could be ?
        Antoine Guillo, FR
        Virtual Reality Designer
        https://groupe-legendre.com/

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          Here's a tip: if you have 2 or more GPUs, plug your monitor to the second GPU (and maybe restart your PC). This way, GPU 2 will be used for rendering Unreal Editor, Windows, etc.; and GPU 1 will be used solely for solving GPU Lightmass.

          This way you can do other stuff with your display GPU while Lightmass works (like playing games, watching videos, etc.), and also greatly reduce the risk of GPU Lightmass running out of memory. I have checked and for a sample scene, GPU 2 (rendering) uses 3 GB of VRAM, and GPU 1 (Lightmass) uses 2 GB when building lighting.

          Even if you don't have 2 GPUs, it might be a good idea to plug your monitor into your onboard graphics, if you're running out of memory when building lighting.

          PS. Thanks Luoshang for this awesomeness.
          Jefferson Pinheiro

          Comment


            Originally posted by Ixiguis View Post
            Here's a tip: if you have 2 or more GPUs, plug your monitor to the second GPU (and maybe restart your PC). This way, GPU 2 will be used for rendering Unreal Editor, Windows, etc.; and GPU 1 will be used solely for solving GPU Lightmass.
            How would you know wich one is GPU 1 and wich one is GPU 2?

            It would be awesome to have a way to configure this on the GPU Lightmass module, looks it could be super useful.

            Thanks!
            Technology Officer
            Magma3D

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              Originally posted by Situx View Post

              How would you know wich one is GPU 1 and wich one is GPU 2?

              It would be awesome to have a way to configure this on the GPU Lightmass module, looks it could be super useful.

              Thanks!
              the gpu in the highest pci e slot is gpu1
              CEO of Prydetech

              https://www.artstation.com/ixicalibur

              Originally posted by ixicalibur
              Here you go, this is a link to every tutorial you could ever need plus instructions to access all the collective knowledge of mankind: [Super massive awesome link that every amazing game developer uses to instantly learn to be super awesome at making stuff]

              Comment


                Originally posted by Situx View Post

                How would you know wich one is GPU 1 and wich one is GPU 2?

                It would be awesome to have a way to configure this on the GPU Lightmass module, looks it could be super useful.

                Thanks!
                I check each GPU Usage in MSI Afterburner. But yeah topmost slot is always the first.
                Jefferson Pinheiro

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                  Hi, Luoshuang. I have a weird problem. When objects is too close for each other, after bake appears strange black dots. I noticed that if i will increase lightmap resolution it help.
                  But i was wondering is there any way to avoid this dots except increasing lightmap resolution. (I am using GPU Lightmass with Ultra High settings)
                  Attached Files

                  Comment


                    Hi!

                    It's just lightmap res/uv problem and has nothing to do with Luoshuang's lightmass!!
                    Yeah having a higher resolution lightmap will help! If you're after archviz results you shouldn't "save up" on lightmap resolution!
                    Another workaround is to lay your lightmaps properly! Proper padding, pixel/grid snap... and you can always "cut off" the parts of the unused uvs to avoid pixelated/blocky contact shadows! ...or snap the overlapping top object to the overlapped bottom object's lightmap "grid"'s corners...

                    Comment


                      I got the same problem, however, the UV layout and padding are correct and the lightmap resolution is red... I don't get that when using CPU bake, so it should have something to do with the GPU implementation.

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                        Originally posted by hdimit16 View Post
                        I got the same problem, however, the UV layout and padding are correct and the lightmap resolution is red... I don't get that when using CPU bake, so it should have something to do with the GPU implementation.
                        Yes, that was i talking about. On CPU bake i don`t have this kind of artifacts. So i think this artifacts appears because of different principle of baking. This is why i am asking about Luoshuang)

                        Comment


                          I wonder what happened to @Luoshuang
                          He's been quiet for some time ...

                          Comment


                            Originally posted by Labuschevskyy View Post

                            Yes, that was i talking about. On CPU bake i don`t have this kind of artifacts. So i think this artifacts appears because of different principle of baking. This is why i am asking about Luoshuang)
                            Could you post please the same screenshots with no change in the scene but using CPU lightmass?
                            Thank you!

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                              Originally posted by Makigirl View Post

                              Could you post please the same screenshots with no change in the scene but using CPU lightmass?
                              Thank you!
                              will try to do CPU rebake ASAP

                              Comment


                                Originally posted by motorsep View Post
                                I wonder what happened to @Luoshuang
                                He's been quiet for some time ...
                                He got hired at Epic.

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