Questions tagged [opencl]

Open Computing Language (OpenCL) is a framework for writing programs that execute across heterogeneous platforms consisting of central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs) and other processors.

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85
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4answers
200k 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?
11
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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 ...
5
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1answer
3k views

AMD RX550 (4GB) GPU - OpenCL not available in Cycles Rendering Compute

I recently purchased a new GPU, and AMD RX550 (4GB), but in Blender OpenCL does not appear as a choice. Would this have to do with the fact that AMDGPU-PRO drivers include AMD's OpenCL? I don't ...
5
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1answer
1k views

Why is “Smooth” shading slower than “Flat” shading in the viewport?

When I set a Mesh to shade as "Smooth" vs "Flat" on a high-poly Mesh Object (such as one with a subdivision modifier), it makes Blender much slower than normal, sometimes almost unusable. Why does ...
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
369 views

Multiple GPU limitations with OpenCL and cycles?

I'm trying to make blender work with 20 GPU's, however I'm able to concurenntly force only 13 of them to work together while rendering one frame(13 tiles, one gpu per tile). Is there any limitation of ...
4
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2answers
3k views

How to enable openCL rendering in Blender 2.75 rc2

I'm using Linux Mint and I was trying to enable GPU rendering, but I still have only CPU option in user preferences... Linux Mint 17.1 x64 Radeon HD 7850 Blender 2.75 rc2 amd-catalyst 15.5 ...
3
votes
1answer
2k views

How to enable GPU rendering with my Radeon card in Linux?

I am currently running Ubuntu 15.04 64-bit on a machine with a Radeon R9 270X GPU. I've grabbed the latest 64-bit Linux build from this page (currently 2.75-a08f8a4) and I have installed the latest ...
3
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1answer
1k views

Blender on Linux - list of AMD GPUs that work with Cycles/OpenCL [closed]

Which AMD GPUs are useable with a recent Linux, more specifically Ubuntu (18.04) and AMD drivers? Or are there some that definitely don't work? This question is not off topic because either a GPU ...
3
votes
1answer
8k views

How to do GPU rendering on MacBook Pro 2016 (AMD Radeon Pro 460)

I'd really like to do GPU render on my new MacBook Pro 2016 with AMD Radeon Pro 460, but I get the dreaded Loading render kernels (may take a few minutes the first time) problem. I don't see my GPU ...
3
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0answers
158 views

OpenCL GPU rendering with AMD Carrizo?

I just got a new laptop that said it had the AMD Radeon R7 mobile graphics in it. Ubuntu recognizes it as "AMD Carrizo", and Blender 2.79 doesn't have the "OpenCL" GPU rendering option in the System ...
2
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1answer
1k views

Support is planned OpenCL 1.0 in Cycles?

I have an AMD graphics card (HD 5830), but the rendering runs on the CPU, because Blender not see my graphics card. I think that it will render faster on the GPU than the CPU. UPD: I waited the ...
2
votes
1answer
3k views

GPU rendering Crashes Blender

I have nothing but all factory Defaults and a simple cube....(Typical Start-up with a changed theme.) 1 Month ago, I installed Blender 2.78c as an upgrade from 2.77. I had this issue then too. I was ...
2
votes
0answers
428 views

OpenCL build failed, failed loading render kernel, isn't supported by clang

I have problem. I want to use GPU compute rendering, but when I change the userpreference cycles compute device to my gpu (OpenCL), blender cannot do rendering and shows that failed loading render ...
2
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0answers
383 views

OpenCL won't work for cycles, Mac

I just started usuing cycles render on a Mac, and Was told GPU rendering is much faster. The only problem is that the GPU rendering never happens it just makes a light grey and dark grey checker board,...
2
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0answers
851 views

Cycles OpenCL on a OS X?

I'm trying to get Blender working with OpenCL on a Mac but I get errors during the run (it tries to do compilation first and that fails).
2
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0answers
61 views

Blender 2.75a: No Compute-Device for Cycles under GTX 750 Ti [duplicate]

I'm using Ubuntu 14.04 LTS, with a brand-new graphics card, GTX 750 Ti. I have even updated the drivers, but for some reason Blender (2.75a) doesn't seem to be allowing Cycles to render with my GPU. ...
2
votes
2answers
519 views

GPU rendering no light penetration in large scene

When i am rendering in cycles large scene (not really, 470k verts) in GPU mode there is no light penetration through holes and glass, even if i render with 10 samples. In small scene (<80k verts) ...
1
vote
1answer
744 views

Render gpu use 1 core cpu! [duplicate]

There are things that I do not understand. When you use gpu only uses 1 core. Solution or explanation? Blender 2.78 release 1475052116 Amd fx 8120 ram 16gb 1600 ssd 120 kingstone + hdd sata3 500 gb ...
1
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1answer
1k views

Is there a way to allocate more memory to GPU for the GPU Compute

I have been working on a solution to a situation I currently have with rendering using the GPU. In the process, I find that my Card's GPU Memory is only 512MB First Question, Could this be why when ...
1
vote
1answer
1k views

Rendering Error with OpenCL

so I just started with Blender and wanted my adjust my render so it will use the GPU. At first it didnt work so I updated my drivers and everything was fine. So now i just tried to render a full ...
1
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2answers
643 views

Very bad performance on Cycles OpenCL using Ubuntu 18.04 and Radeon VII

We've got a new render machine for our Company. Threadripper 1950x + dual Radeon VII + 64 gb of ddr4-3200 RAM. (Only one Radeon installed now for testing) Our CPU testing went flawless. With great ...
1
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1answer
323 views

Opencl is not working on the Radeon HD 7750/8740 / R7 250E [duplicate]

In "Cycle Compute Divece" appears "none". It's as if I did not have a video card. I have a board [AMD / ATI] Cape Verde PRO [Radeon HD 7750/8740 / R7 250E] It is listed as having Opencl support. This ...
1
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1answer
1k views

CUDA & OpenCL GPUs compatibility in Cycles

I would like to add second GPU to my rig (currently I have GTX 1070). My budget allows two options: 1070 ti or Vega 64 (which seems to be much faster in Cycles) The question is: can a CUDA based GPU ...
1
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2answers
1k views

Can we mix CPU, Cuda GPU and OpenCL GPU for Cycles Render Farms

We have a few machines sitting around, some are cpu only machines, while other have nvidia or AMD gpus. Can I get all these machines hooked up and use the fastest rendering method on each machine for ...
1
vote
1answer
2k views

OpenCL build failed on AMD R9 290 - Insufficient Private Resources

I'm running Blender on windows. Recently I tried to use GPU rendering with my AMD R9 290, but upon rendering, I get an error reading "OpenCL build failed: error in console." Meanwhile, in the console:...
1
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0answers
48 views

Can I render on both CUDA and OpenCL?

I have a vega 56 and a gtx 1060 both render just fine on their own but i would love to use them in unison if at all possible otherwise i will have to figure out how to sell my 1060 and buy an RX 590. ...
1
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0answers
210 views

Blender on Linux: Dual-AMD-GPUs previously not found (single works, though); now working fine

I'm just trying to set up my workstation for Blender and got caught by a weird problem: Installing just a single GPU (AMD Radeon RX Vega 64) in the machine works fine with Blender. The GPU shows ...
1
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0answers
686 views

Blender 2.79 Cycles OpenCL RX Vega GPU extremely slow. (Ubuntu 18.04)

I am running Ubuntu 18.04 on a fairly powerful PC (Ryzen 2700x and Vega64) I finally managed to get OpenCL to work at all with ROCm-rehl drivers. When I render the default cube scene CPU rendering ...
1
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0answers
172 views

Does cycles or prorender use combined Ryzen 2700 & Vega 56 capabilities?

Ryzen 7 and Vega 56 uses OpenCl. Does cycles or amd prorender uses those opencl capabilities combined or do you need to choose gpu or cpu rendering. I amasking that because i saw in benchmarking ...
1
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0answers
910 views

Blender 2.79 does not detect GPU AMD RX580

I've bought AMD RX580 recently and it seems Blender can't detect it, it has "none" in cycles compute device in system settings. I have ubuntu 18.04 installed, and already installed latest AMD linux ...
1
vote
0answers
767 views

My Blender 2.79 crashes on Startup without loading the scene

I've had a problem with Blender for about a week since installing it where every time I start up the program, it launches the output window, then begins to draw the window, but it doesn't create any ...
1
vote
0answers
1k views

How can I get my AMD GPU to work in Linux under OpenCL?

OS: Arch Linux kernel 4.7.6-1 GPU Driver: AMDGPU 1.1.2-1 Xorg version: 1.18.4-1 Blender version: 2.78.a-1 (latest in official Arch repo) I'm 100% sure Xorg is loading the GPU driver based on the ...
1
vote
0answers
1k views

Cycles GPU Compute won't render

I tried to enable gpu compute with opencl and it says "Loading render kernels this may take a few minutes the first time" when i click render and it just says that forever and never even renders and i ...
1
vote
0answers
1k views

Enable OpenCL GPU Rendering on Ubuntu 16.04 with Intel Skylake GT2?

I know this is experimental technology and I shouldn't get my hopes up; I installed both the proprietary Intel OpenCL SDK (2016) and open-source Beignet (they don't seem to be interfering with one ...
1
vote
0answers
674 views

Cycles OpenCL GPU Render Gray Overlay/Mist?

Dear Blender Community, Several weeks ago I suddenly experienced difficulty when rendering on my GPU. Whereas before the renders looked just like the CPU renders as they are supposed to, my GPU ...
1
vote
0answers
275 views

CPU and OpenCL gives 2 different rendering result?

the 1st pic is made by cpu, the 2nd opencl. How do I make OPENCL work the same as CPU?
1
vote
0answers
296 views

Ugly stripes when rendering with GPU, even with high samples

I came across a problem which I couldn't find any solution through google. With my new GPU (R9 390X) I get when rendering with it, distinct stripes, especially in darker areas. Does anyone know the ...
1
vote
0answers
574 views

Horizontal Render Artifacts When Using OpenCl

I've just started rendering with my new AMD GPU and realized that I'm getting some strange horizontal line artifacts. As you can see, in the box on the right, there are strange blue lines, and all ...
1
vote
0answers
630 views

Cycles on AMD takes abnormally long time to render

Since I upgraded to the latest version of OS X and Blender 2.76, I was looking forward to finally being able to use GPU acceleration with my AMD card. Instead, using the BMW benchmark scene, it is now ...
1
vote
1answer
81 views

Good AMD GC but only find “SCRAPPER” where there should be a compute drop down menu

I have been trying to get my AMD Radeon card to finally be recognized by Blender. It was working beautifully then I installed the Sensei Format and all of a sudden I lose my ability to render with GPU....
0
votes
2answers
2k views

Selecting GPU with Python script

Alright, so i have a slightly strange system configuration. I'm running Zorin OS 12, which is roughly equivalent to Ubuntu 16.04. I am also running Mesa, but i use AMD's OpenCL. It works just fine ...
0
votes
1answer
666 views

OpenCL option not available in Blender 2.78c running on Ubuntu 17.04

Dedicated GPU: AMD Radeon R5 M330 (HAINAN), Drivers: radeon + Mesa 17.2.0 obtained from the padoka PPA. Blender Version 2.78c downloaded from blender.org Tried ...
0
votes
1answer
543 views

“No compatible GPUs found” - Arch Linux

When I open Blender through terminal it has no error messages, however when I open settings I am greeted by this message. I am using an AMD Radeon R9 390X graphics card with the amdgpu driver. I know ...
0
votes
1answer
382 views

How to bake using Principled + cycles under reasonable time? GPU + CPU = Instant crash

Here is the deal, I'm using principled shader to bake a simple object, it works is great but I've waited 36 Hours and it was at 70%. The object is a car with only 13K polys and I've separated the ...
0
votes
1answer
737 views

Blender settings and Windows drivers for OpenCL rendering

I recently got a Radeon RX Vega 64, first time AMD GPU user, so I'm not quite sure how to set Blender up for it and/or the drivers I'll have to have installed in order for it to work correctly. So ...
0
votes
1answer
716 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 ...
0
votes
0answers
41 views

Are there any updated OpenCL vs CUDA benchmarks?

I'm about to retire my old PC and buy a new one. The major uses would be gaming and blender. So when it comes to buying a GPU, I'm taking those two things in consideration. Cycles on the GPU uses CUDA ...
0
votes
0answers
39 views

Sculpting bad performance

I have an AMD Radeon RX Vega⁶⁴ graphics card and is experiencing slow performance while sculpting. Is there something wrong with the graphics card, or a bug in Blender? This just seems really odd, ...
0
votes
0answers
87 views

Eevee changing GPU selection does not work?

I am trying to render using the Blender 2.8 Eevee engine with different GPUs in different instances so that I can speed up my render times. For example, 3 open instances where two are rendering on my ...