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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Can blender use both CUDA and OpenCL simultaneously?

I plan to build a compact Workstation using the 8-core AMD 4000 APU with a possible NVidia 2070 Super GPU Card that can boot in either Linux or Windows. Can Blender use both the APU and GPU Card ...
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Blender 2.82 does not appear to be using GPU

We're running a headless renderserver (Threadripper 1950x + 2x RADEON VII + 128GB RAM). It's running Ubuntu 20.04 LTS and has blender 2.82, 2.80 and 2.79 installed. In 2.82 we're seeing the CPU being ...
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Blender on a macbook pro 2015 Catalina with Intel Iris pro and external Monitor bad performance

Blender 2.8.2 performance is very bad with an external Monitor - the basic cube stutters when moving. With the internal Monitor it is ok, with blender 2.97 it is ok. So it seems to have something to ...
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102 views

Why doesn't Blender detect RTX 2060 with OpenCL?

Though the question was asked many times, I can't find explanation for Nvidia RTX 2060. Nvidia drivers got OpenCL support. I don't understand why Blender says no GPU detected to render cycles with ...
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Rendering in Cycles on OpenCL GPU Compute Leads to Artifacts

I've switched my renderer to GPU compute and get pretty terrible artifacting along with garbled denoising data. I'm asking this here because Cycles rendering seems to be the only OpenCL workload that ...
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115 views

Unwanted Lines when rendering using GPU and OpenCL (RX 580)

I'm new to blender and have been studying and starting with low poly modeling. Recently I changed my GPU from a GTX 960 to an RX 580. I uninstalled the drivers and installed new ones using DDU. ...
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44 views

Blender 2.83 crashes when deleting the default cube with OpenCL GPU Rendering (Revenge of the default cube?)

I wanted to try out GPU rendering with my AMD R9 Fury GPU. The Problem: When I enable OpenCL and GPU rendering and try to delete the default cube in the rendered viewport, blender crashes. When I hit ...
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92 views

OpenCL AMD Incompatible GPU

I recently installed an AMD graphics card in my machine (Radeon RX570 to be exact), which should be OpenCL 2.0 compatible according to AMD, but when I try to set my Cycles render device to OpenCL, I ...
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Blender doesnt report opencl devices

I have two GPUs on my system, a nVidia GTX 1650 and a AMD 5700XT. Blender reports CUDA support for the nvidia card, but it doesnt report openCL support for the AMD card nor the nVidia card. ...
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Shadows disappear when you turn on volume absorption in gpu render (Open CL)

Blender: 2.82a Gpu: rx5700 Whenever I try to turn on volume absorption in the glass I'm trying to render the shadows disappear. It doesn't matter if I use the principal shader or the glass one the ...
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380 views

Cycles GPU OpenCL render has square white artifacts and strange lines on an AMD RX 5700 XT in Blender 2.82

Issue: Rendering with my AMD GPU, either in GPU-only mode or GPU+CPU mode, causes artifacting (either strange black lines if GPU-only or white box artifacts of GPU+CPU) in OpenCL Cycles renders. GPU-...
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sheepit ignore amd gpu linux ubuntu

sheepit client doesn't recognize my gpu , i've installed opencl and the pro amd driver and the gpu works fine with blender and i use it for render in blender gpu... amd rx580 cpu ryzen 5 2600x ...
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AMD Radeon R7 450 card not detected [duplicate]

Ok so the official blender site says that if an amd card has gcn 1st gen or newer architecture, the amd card is compatible And my card i.e. AMD Radeon R7 450 has GCN 1st Gen architecture as mentioned ...
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29 views

GTX+Radeon in Blender - It's possible? [duplicate]

I'm a long-time Blender user and my projects are becoming more and more complex and I was thinking in buying a new GPU. Now I'm using a GTX 970 V1 Windforce and a Intel Xeon X5660. A lot of people ...
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21 views

Emission shader not working with OpenCL

When I try to render with CPU, the scene looks fine and my emission shaders work as expected. When I switch to GPU rendering, the emissions stop working. I really have no idea what might be causing ...
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119 views

Crashing or very slow rendering

I have recently started using Blender 2.8 after using 2.79 for some time. I used to render everything alright, but now, I changed from my old laptop to the new PC. So, I am using the scene with the ...
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368 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 ...
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54 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, ...
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180 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 ...
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60 views

Open CL error: CL_INVALID_ARG_SIZE

I'm relatively new to blender - I'm using version 2.79. I have been trying to render an animation using GPU with a Hilbert Spiral of 512x512. I keep getting an "Open CL error: CL_INVALID_ARG_SIZE" ...
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2answers
921 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 ...
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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. ...
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1answer
488 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 ...
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288 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 ...
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701 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 ...
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241 views

OpenCL device only visible as root

I'm trying to enable gpu rendering on my Vega 64 card in linux, but I can only do so as root. When I run blender as root user, this is what I see in preferences: The first one will cause my whole ...
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2k 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 ...
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738 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 ...
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182 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 ...
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488 views

Is radeon r4 compatible with Blender 2.8?

Hey everybody I was just wondering would AMD radeon r4 be compatible for openCL? Since it is integrated, openGL is out of the question. Specifically do you know what GCN architecture the r4 is? Any ...
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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 ...
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437 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 ...
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1k views

How to get OpenCL functioning for GPU rendering, AMD GPU?

I'm running blender 2.79b and Blender won't recognize my card. AMD Radeon HD 7900 Series, GCN 1st gen architecture OpenCL™ Version: 24.20.11021.1000 Vulkan™ Driver Version: 2.0.33 Am I missing ...
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830 views

Does Blender support the new AMD Vega M GL graphics card? If so, how must it be configured in order to work effectively?

This is my very first post, so please forgive and correct me if I do something incorrectly. I recently purchased the new (as of May, 2018) Dell XPS 15 2-in-1 laptop which has the new Intel Core i7 ...
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252 views

Cycles rendering with OpenCL keeps freezing

I've been using my AMD Graphics card for GPU rendering in Cycles for a while. I've never had problems, everything worked fine for months, until recently. When rendering with GPU, I can clearly see ...
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783 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 ...
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2answers
3k 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 ...
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238 views

Cycles gpu rendering opencl freezing

I have been learning blender for the past month and today i have found out how to enable GPU rendering but when switching from CPU to GPU compute my computer freezes. here are my specs: CPU: Intel ...
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469 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 ...
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1answer
446 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 ...
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145 views

Principled BSDF ,micro displacement turns black with normal map [duplicate]

not sure if its supported or not, i'm using an AMD RX Vega56 (OpenCL). using a normal map in the principled BSDF + micro displacement gets me just a blck hole. is it supported? thanks for the help :)...
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1k views

Rendering Blender 2.79 on MAC PRO (late 2013)

I have been not that active with Blender lately, but I am trying to catch up with current development by installing Blender 2.79. Reading about all the improvements related to OpenCL I wonder what is ...
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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 ...
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1answer
839 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 ...
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166 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 ...
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689 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 ...
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1answer
2k 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 ...
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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 ...
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1answer
83 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....
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168 views

OpenCL version missing from User Prefs

As seen in the picture, I have no option to select OpenCL as a solution to render with. I'm using Blender 2.78.5 (the version where we do have the Principled BSDF shader). I'm on AMD Radeon HD 8730M ...