Questions tagged [gpu]

A graphics processing unit (GPU) is a specialized electronic circuit designed to rapidly manipulate and alter memory to accelerate the rendering or output images.

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85
votes
4answers
201k views

Enabling GPU rendering for Cycles?

I want to enable GPU rendering, but there is no option in User Preferences > System: Why is this? How can I get cycles to render using my GPU?
19
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3answers
30k views

How will multiple GPUs improve Cycles' rendering performance?

I have an NVIDIA Titan GPU and I'm able to add another card, but I wonder whether Blender will benefit from more than one GPUs? Should I do it as SLI or should I just do it as an added card? I just ...
11
votes
8answers
37k views

Cycles / CUDA Error: Out of Memory

I've been struggling a little with Cycles and my GeForce GTX 750 graphic card. Most of the time it works well, but when I try to work with scenes that have custom shaders (like a skin shader with ...
10
votes
6answers
22k views

How can one do rendering with Cycles using an NVIDIA RTX GPU?

I have a NVIDIA RTX 2080. I've got an error like this: CUDA binary kernel for this graphics card compute capability (7.5) not found. Does someone know how to enable it?
5
votes
1answer
5k views

Does Blender support dual-GPU rendering if the two GPUs aren't the same?

I have a GTX 1060 6GB in my current build, and I also have a GTX 960 2GB in storage. I was wondering if I got one of these bad boys, and got both of my GPUs in one build (Not SLI or CrossFire, just in ...
10
votes
1answer
14k views

How to enable GPU rendering on older Nvidia GPUs?

I have an older Nvidia graphics card that I would like to use for GPU rendering with cycles. However, I am having difficulty enabling this feature. If I open up User Preferences, I see the following: ...
12
votes
2answers
16k views

CUDA rendering on Linux Mint or Ubuntu variants [duplicate]

I know that nobody likes duplicate questions, but I haven't found my answer on any of the other questions with this topic. I built a computer with a GeForce GTX 750 GPU (made by Gigabyte). It ...
24
votes
4answers
13k views

Cycles hybrid rendering

The Cycles render engine can render both on the CPU and the GPU. I often render over-night so I do not need my computer to be responsive. Is it possible to render with Cycles using both the CPU and ...
8
votes
3answers
33k views

Blender Can't detect 3D hardware accelerated Driver

I have just installed blender 2.77a from blender.org om windows 8.1. When i try to open blender it gives me an error as follows Blender - Can't detect 3d hardware accelerated drivers. I have ...
4
votes
4answers
3k views

Why are there scenes that will not render on GPU but will render fine on CPU?

I've already tried GPU Rendering and it seem to be twice as fast as the CPU. However I have some situation where tried to render on the GPU, but it doesn't do anything. When I switch to CPU it renders....
3
votes
1answer
1k views

Why does cycle rendering only use one core from an AMD GPU?

I am using Blender 2.77 and an R7 250 GPU on Windows. Compute Device >> OpenCL (Oland). OpenSubdiv >> (Tested with all). Device >> GPU Compute.
5
votes
5answers
2k views

Mac Pro Tower - Sapphire Radeon Rx580 is really, really slow

I recently installed a Sapphire Pulse Radeon Rx580 8gb on my 2010 era (with upgraded CPU) Mac Pro tower. I did this because my former GPU, a NVIDIA GTX 970 is not "Metal Compatible" and would not ...
19
votes
2answers
8k views

Blender sets Compute Device (CUDA) but doesn't use it for actual render (on EC2 GPU Instance)

I'm trying to set up some automated render servers on EC2 using their GPU instance type (g2.2xlarge). I'm running blender in the background with a python script that renders the image I want and saves ...
11
votes
1answer
12k views

Is it possible to do OpenCL rendering on Intel processors?

Intel processors have supported OpenCL for a long time now; latest versions (Haswell and above) support OpenCL 2.0 or better. Why don't we have a GPU rendering option when using Blender on these ...
4
votes
1answer
2k views

Compute device list not showing card name when using OpenCL

I have an AMD Radeon R7 M265, and when I force OPENCL with the batch file it only shows Iceland, Intel HD and the CPU. I followed this instructions: R, type CMD, ...
4
votes
1answer
3k views

Graphics Card Not Avalible in Blender Internal

For some reason Blender does not use my GPU when rendering, even though I have my card selected in the user preferences When I render, my CPU usage goes up to 100% and MSI Afterburner shows no ...
3
votes
2answers
1k views

Why does Denoising take up so much memory?

I tried to render my scene with the new 2.79 Denoiser. During the Rendering Process everything was fine, my memory peak was about 1000M but as soon as the Denoising started it suddenly shot up to ~...
1
vote
1answer
1k views

Can't use Radeon GPU to render in cycles (R9 270)

In the settings I can't choose another device to render other than the CPU. According to the blender wiki the GPUs "with a GCN Architecture superior or equal to 2.0 are supported". And as I ...
13
votes
1answer
33k views

GPU slower than CPU?

I've got a Macbook Pro Retina, Mid 2014, and I'm trying to get GPU rendering to work on it. I've downloaded Cuda, the GPU shows up in user preferences, and I've selected GPU Compute under the render ...
3
votes
2answers
7k views

CUDA error: Out of memory in cuMemAlloc(&device_pointer, size)

My GTX 960 is reporting there there is not enough memory, even when another person the same card is able to render it fine. The other person had the same set up as I do and rendered the same scenes. ...
3
votes
1answer
960 views

GPU Rendering causing strange lines

When I render using my r9 390 graphics card, weird lines are appearing over the render. This problem has just started happening recently, as a few days ago I was rendering the same scene without the ...
3
votes
1answer
125 views

Why do volumetrics render noisier when using GPU then when using CPU in Cycles?

Alrighty. I've searched all over the place and even put in a couple of requests from every deity I could think of, but nothing on my issue. So, I'm messing around with making up volumetric light ...
18
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5answers
5k views

Why/how does tile size effect performance?

The general wisdom is "for CPU use 32x32 tiles, for GPU use 128x128 or bigger, depending on your card". But why? Why should a ...
2
votes
4answers
3k views

A powerful graphics card, or cloud render farm, which is more effective?

According to the tests that I have seen, the render speed difference CPU vs GPU can be almost 60 times in favor of the GPU. GPU renders using the graphics card, CPU using the CPU, am I right? So, ...
3
votes
1answer
8k views

ATI Radeon HD 7770 no GPU rendering? [closed]

So I don't have an option to turn on GPU rendering in settings. I only have the option for CPU rendering. Here's my specs: ATI Radeon HD 7770 1GB GDDR5 1GH AMD Phenom II 4x 960T 3GHz 4Gb DDR3 ...
8
votes
1answer
3k views

turn on Cycles GPU render on non CUDA computers

Is there a way to turn on GPU rendering without an installed CUDA driver and without a CUDA enabled graphic card? I want to send the blend file on my render farm, all the slaves have NVidia CUDA ...
4
votes
3answers
2k views

Cycles GPU CUDA out of memory - How to identify the problem objects?

Rendering a large environment scene (also with multiple smoke and physics simulations) in Blender causes my GTX 980ti to run out of CUDA memory. (I've baked all the simulations but am unsure if this ...
4
votes
3answers
5k views

GPU Rendering on an Intel Iris Pro (Apple Macbook Pro)

I was wondering if there now (as of Blender 2.78c) a way to use GPU rendering on an Intel Iris Pro Graphics Card. I tried to get it to work, and successfully got the GPU to show up in the System User ...
3
votes
3answers
8k views

Is OpenCL possible within Blender either via cycles or internal?

I have the Radeon R9 280X video card and was wondering if there was anyway at all to enable GPU rendering with this card? I know Nvidia has CUDA cores and that works. That's good and all, BUT I don't ...
1
vote
0answers
2k views

GPU rendering is equal to or slower than CPU rendering [closed]

I recently bought an ASUS N550J with i.7 2.4Ghz 8GB Ram 4 GB Dedicated VRam GTX 850m When I use blender the GPU renderer only renders one tile at a time and the time taken by the GPU is more or less ...
1
vote
1answer
869 views

Should i run SLI or not?

I were given two 580 GTX evga cards and thinking of putting them to use. Should I use SLI or not? I know that sli makes two card work as one etc. Hear some say SLI is not good for cycles, better to ...
1
vote
1answer
833 views

GPU render turning out grey when using certain materials

i'm trying to render a scene, but when i am using my GPU te render something, the end result gets a grey layer on top of the image. the problem appeared after amd's crimson drivers or after blender 2....
0
votes
1answer
719 views

Rendering with AMD Radeon R5 M330 gives an error that I can't understand!

So lately I started making an animation that has a lot of detailed objects, which made it render very slowly on my Core i5-6200 (clocked @ 2.30 GHz). I'm using the Cycles rendering engine (Internal ...
3
votes
1answer
996 views

How do I get Cycles to use GPU on a linux server?

Inspired by this question: Enabling GPU rendering for Cycles? I have access to a Linux server that is equipped with GeForce GTX TITAN X. Now Cycles still renders everything with CPU. How can I get it ...
2
votes
2answers
2k views

EEVEE seem not to benefit from multiple GPUs for rendering

Recently I have built a new workstation PC with dual GTX 1080 Ti. I know that in Cycles, each GPU renders 1 tile but I'm not sure about EEVEE. I tested it and it seems that even if I have checked both ...
1
vote
2answers
942 views

GPU Rendering in Cycles crashing blender (Mac)

I've been experiencing loads of crashing while rendering lately, and after doing some testing I've finally isolated it to the GPU rendering. As soon as I change to that from CPU, blender goes down. ...
6
votes
3answers
13k views

cuda error at cuctxcreate launch failed

I have been getting a launch error when i try to render a scene using my GPU. I use a GTX 1070 on blender 2.78 and the scene is very simplistic so there should be plenty of memory available. Any Idea ...
4
votes
1answer
1k views

Why can't i render smoke with my AMD graphic card

When I try to render smoke one GPU it just gives me an OpenCL error, on the CPU its just fine. I have a ATI HD 7850 2GB ddr5 OC (gtx970 just fried) and since I installed the graphic card I can't work ...
4
votes
1answer
875 views

How to bypass OpenGL 1.2 requirement for remote GPU rendering?

Disclaimer: I am aware that this question is very similar to these two and that the answer to my question would probably be applicable to them, too: How to run blender 2.77 on a virtual network ...
3
votes
1answer
9k views

GPU Rendering issue “Cuda error at cuCtxCreate: Illegal Address”

I've searched Google and has no luck finding a solution hopefully someone can give me some info and what I should do about it. I have: GT 640m 2Gb <- a Laptop Driver ver: 368.81 ...
3
votes
2answers
2k views

Blender 2.77 renders smoke\fire domain solid black on GPU (Cycles)

I have just updated to 2.77 version and was very exited about using GPU for rendering fire. When I tried to render the test scene I got this: Though it should look like this (rendered on CPU): ...
3
votes
2answers
2k views

Can you render using the CPU with Eevee

Is there a way to render things in eevee using the CPU or is it just a GPU render engine?
2
votes
1answer
4k views

Rendering isn't stressing GPU

I just went through a tutorial video to make an animation of 2 planets colliding. This is only my 3rd rendering, and the first one since I realized Blender wasn't using my GPU. I set to my CUDA based ...
1
vote
1answer
3k views

GPU/CUDA volume and SSS support

As my fedora repos are way behind and still on blender 2.69, I've gone and compiled the latest myself. Everything seems to work and is quite recent. I can even bake CPU SSS, which is great. However I ...
0
votes
1answer
1k views

Does Blender Cycles support rendering in SLI mode - two and more graphics cards?

Can we make SLI bridge between our graphics cards for a faster rendering on blender Cycles renderer? I saw on the blender version 2.79.4 we can faster render on 64*64 render tile on CPU and GPUs, ...
0
votes
1answer
540 views

Blender running at a crawl after NVidia update

I can’t say exactly the NVidia update was the cause but several other people and I have experienced a problem with Blender slowing to a crawl in the last few days. If you are having this same problem ...
0
votes
2answers
294 views

Rendering with gpu crashed

Does anyone know why this happened? I was rendering at 1000 samples on a gtx 1070 and the rendering crashed saying "CUDA error: Out of memory in cuCtxSynchronize(), line 1372"
0
votes
1answer
1k views

GPU computation difference between rendering and cloth baking

After reading some articles on blender speed, I see that using CUDA enabled GPU computing will be of help in rendering. I am trying to stitch a shirt on human .obj file. For that I bake 60 frames ...
0
votes
1answer
780 views

Blender 2.80 system Req + GPU req

Can someone please let me know the minimum system requirements and GPU requirement to run blender 2.80 and eevee smoothly? Also please let me know the optimum system requirements for the purpose of ...
0
votes
1answer
256 views

How to select all non-CPU CUDA or non-CPU OpenCL devices for Cycles rendering (command line)?

I'm looking for a way to have Blender 2.8 render with Cycles using CUDA but only for Nvidia GPUs (no CPUs selected) and do the same using OpenCL with only AMD GPUs (no CPUs selected). My goal is to ...