New GTX 970, Reality, and Iray
Richard John S
Posts: 391
Well, I have to say the GTX 970 really made the difference when it comes to rendering in Iray. What used to take two hours or more takes like 5 minutes. However, there is hardly a difference with Reality and Luxrender, if any... I was really hoping the GPU acceleration with a GTX 970 would bump that up drastically, but it's still pretty comparable to the 8800GT I used before. So, how do you actually speed luxrender with hardware? Is it mainly CPU based? Keep in mind, I am really looking forward to their new update with CPU acceleration, but I\m just kind of surprised that the upgrade from an 8800GT to a GTX 970 made hardly any difference if at all. Reality/Luxrender has some features that I really like such as the cameras and such.
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Comments
Luxrender is NOT a GPU renderer...yet.
That will come, hopefully sooner than later...as such, no, it won't make a difference. But once it does get GPU capabilities, the 970 will speed it up.
It is misleading to say that LuxRender does not support GPU rendering. You can already utilise GPU options in both Reality and Luxus. It's not perfect, and only supports a fraction of LuxRender's full capabilities. I think you can do most things with hybrid now though. LuxCore is cooking along pretty well. In fact the latest Luxus project Spheric Labs is working on supports LuxCore features.
The problem with Nvidia based cards is that they have nerfed OpenCL support, but considering you can't go CUDA on AMD cards, the trade-off isn't so bad.
Luxrender has supported GPU rendering (openCL)for quite a while, in the 1.4 release.
If a luxrender exporter is not supporting GPU(openCL) rendering and only "Hybrid", then it is only utilizing the functions/ability of Luxrender 1.3
NO...LUXRENDER has NOT been using GPU. Yes, there is a GPU renederer that is part of the Luxrender package AND there is Hybrid. But that is all part of what 1.5 is bringing to the table...and full, seamless implementation in 2.0. So for all practical purposes, no it doesn't.
From your logic, you could also say 1.5 is not using GPU, but it does have a GPU renderer, because 1.5 is part of what 2.0 is bringing to the table.
1.4 fully uses GPU for rendering. It is just not as fully featured as the CPU (API 1) renderer. 1.5 will be the same.
Isn't GPU/Hybrid rendering in LuxRender still a bit crash-prone, and that's one of the problems the upcoming version is supposed to fix? I know I've been having random crashes in Hybrid mode, although even with my anaemic old NVidia card, when it does run without crashing the render speed goes up by an impressive amount.
sadly i wish i could have used the 970 GTX i am not sure if it was a faulty one or just too much for my PC but it burned out in a little over a month...... thankfully got a partial refund......now have a 960 GTX (have had that for several months now) works ok. One day i hope to get a nice shiney pc with better cards but hey better then nothing!
Nevermind...
What kind of a PC do you have? I could only imagine it being a faulty card. I have never heard of a PC killing a graphics card. Maybe if you short circuited your board or something. I did that once when incorrectly installing a motherboard for the first time a long time ago, lol! The PSU and Motheboard fried.
Nahh GPU rendering with Reality dont work good yet. I have a new laptop with 980M and I have yet to play with iray.. If I do I would most likely need to swap out the AMD fire pro 5000 which I put in my home PC (due to yet more empty promises of GPU rendering using Reality a few yers back) If I want to take advantage of the iray draw on both machines. Good news with lux 1.5 it is suppose to utilise both GPUS...