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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GPU VRAM exceeding memory , What is the best way to break my scene up?

Im having GPU VRAM exceeding memory (I have RTX 3090 24 gb) on a very large scene and want to find the right solution if I should have two render layers breaking the scene up or two different blend ...
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Texture paint uses CPU only [closed]

when texture painting one would presume it would be logical for blender to use GPU to not only do the actual texture painting but also the depth sorting ... i cannot tell you how irritating it is that ...
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My GPU is not recognized until I open the Preferences window

I have a problem with Blender not recognizing my GPU on startup. Every time I start Blender and either start a new project or open an existing one, the render device is not recognized and it defaults ...
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Performance penalty when using system RAM with GPU [closed]

Are there any benchmarks showing the performance penalty when a GPU render spills over from VRAM into system RAM on large scenes? Obviously this will vary by CPU, GPU, RAM architectures and speeds, ...
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Cycles CUDA issues in Google Colab when rendering [closed]

I am trying to render a scene on Google Colab but I keep getting the following error: ...
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Why does OptiX Denoising work in Viewport but not Render when rending a specific (large) scene?

I cannot get OptiX Denoising to work on the final render for my complex scene. However, if I create a new scene and render the default cube (using low samples as a check), OptiX denoising works for ...
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1answer
44 views

Blender rendering slows down over time

I'm new to Blender and I'm trying to render images for my PhD project. The images are rendered using a plug-in that would generates arrays of the scene from different views: https://github.com/gfxdisp/...
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Using two different GPUs for display and rendering

In the GPU Rendering manual https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html it states that when rendering heavy scenes on the GPU it is best to have two different gpus: One ...
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1answer
101 views

What will happen when Metal is a supported render device? [closed]

Currently, render devices include of none (CPU), OptiX (NVIDIA RTX), CUDA (NVIDIA), and OpenCL (AMD/Intel Iris/Iris Xe). when Apple Metal is officially released (blender announced partnership), will ...
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466 views

Blender Google Colab "Failed to create CUDA context (Unknown error)" error [closed]

I tried rendering an image on google colab but I always get an error saying "Failed to create CUDA context (Unknown error)".It works fine when I change the render settings in blender to cpu ...
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Multi GPU performance in Cycles [duplicate]

I have a question about multi GPU rendering with cycles. Recently I installed a RXT 3080 in my system alongside a RTX 2070. Things work fine on the system with them. One of the reasons I wanted to use ...
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OpenCL No compatible GPUs found for path tracing

I have a radeon rx 580 GPU I had been able to render with the GPU with it. Both 2.8 and 2.9 versions used to work. I've been doing other art so I haven't rendered anything lately and tried today. ...
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Blender Optix doesn't work with my RTX 2070 (worked before) [closed]

When I try to render with Cycles using Optix it doesn't work on my RTX 2070 even if my GPU is detected. Doesn't work since I installed the latest driver: Nvidia studio 472.12. Do you have a solution? ...
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How to use POINTS in batch_for_shader(type)?

How can I use POINTS in batch_for_shader(type) ? API: https://docs.blender.org/api/current/gpu_extras.batch.html
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With multiple GPUs, can we control which GPU Eeevee uses to render?

I have a machine with multiple GPUs installed. In Preferences->System->CUDA, there's a clear option for indicating which GPU I'd like Cycles to have access to (or None, or Both, or some mixture ...
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Instancing GPU batches

Using an example found on internet, I am drawing a simple cube using GPU. How can I draw hundreds of such instances, with different positions / rotations / scales ? ...
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148 views

No compatible GPUs found for path tracing cycles will render on the CPU

I have Blender 2.82 (sub 7) and I am trying to use my GPU to render, but Blender says No compatible GPUs found for path tracing I have an NVIDIA GeForce GTX 750 Ti, and I am on Linux Is there any way ...
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11 views

EXCEPTION_ACCES_VIOLATION

I was trying to export a few thousand stimuli manipulated along some dimension in one go. This worked fine for batch sizes of 17 000, but when I increased the batch size, Blender crashed. When I try ...
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Render to float texture using Python API

Is there a way to render to a floating point texture format using blender's python api? Ideally I'd like to render to a RGBA32F. The suggested way to render to texture appears to be gpu.types....
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11 views

Blender Not working on the iGPU of AMD Ryzen 5500u [duplicate]

I recently bought a laptop that has the AMD Ryzen 5500u. I am able to render my scenes on the cpu but when I switch to gpu processing(on cycles) and try to go to rendered view, it says loading device ...
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16 views

Missing object when rendering using OPENCL GPU and CPU render

I'm new in Blender, so I tried to make an animation following youtube tutorial. I have problem when using OpenCL for rendering Some object is missing and the physics on the object is not working. It ...
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1answer
85 views

No Compatible GPUs RTX 3080 Windows 10

I already tried to reinstall Windows using the keep files and apps method. Still no joy. Already tried switch between drivers (471.96) Could someone please help?
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Has there been an issue with keyframing the alpha channel of a material when rendering in the GPU since 2.9.0?

I am trying to depict the "disappearance" of meshes via a decrease in their alpha channels. The animation is done using a python script and cycles. The problem arises during render of the ...
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Cuda_Error_Illegal_address on 3090 RTX

Hey I have a problem with blender, when I want to render one scene. And the scene is pretty small, the only one big thing in there is a 16k hdri. But my PC Specs should easy handle it. Could someone ...
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1answer
104 views

How to load an image from images directory in GPU module?

How can I load an image from an images directory in GPU module? From https://docs.blender.org/api/current/gpu.html#d-image ...
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Getting "OpenCL error (-46): CL_INVALID_KERNEL_NAME" when trying to use Cycles with AMD RX 570 [duplicate]

Help! I've tried updating my GPU drivers, reinstalling Blender, and restarting my PC! In the past GPU rendering has worked for this card, but it produced artifacts, and now it doesn't work at all. Any ...
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Smoke renders only on CPU (Cycles)

First things first version: 2.93.3, branch: master, commit date: 2021-08-17 18:30, hash: 8b80d19f3641, type: release build date: 2021-08-17, 23:47:11 platform: Windows, Graphics Card: 5700 XT, ...
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1answer
31 views

Why can't I switch to CUDA?

I recently bought a new laptop, Gigabyte G5 with RTX 3060, so I want to set GPU as my rendering device. However, after switching from "none" to "CUDA" in the preferences, a warning ...
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161 views

Very slow OPTIX render on 3070ti - why?

I need help. My new 3070ti card is giving me VERY SLOW render times with OPTIX. With CUDA it is performing as expected. I recently upgraded from a 1080ti to a new 3070ti. This site (https://opendata....
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173 views

Using Blender with Intel Iris Xe and OpenCL [duplicate]

I've been trying to get Blender working with my Intel Iris Xe GPU and I'm having some trouble. Switching to GPU compute with Cycles and OpenCL gets stuck on "Updating device" while the scene ...
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67 views

Blender 2.93 lts cycles GPU rendering gtx 1650 cuda

I am trying to render a scene in a blender 2.93 LTS with cycles GPU render but the blender does not use the GPU resources. I've already set the system preferences to Cuda and gtx 1650. Also, I have ...
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71 views

Blender states I'm "Out of memory" when trying to render, but I have tons of unused memory?

I'm having a recurring problem where Blender is refusing to render an image, stating I am out of memory, when I clearly have a huge amount of excess memory available. I'm attempting to render in ...
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1answer
104 views

How to debug blender freezing the whole computer?

I am trying to use Blender on a laptop with the following specs: Intel Xeon E3-1200 HD Graphics 520 16 GB RAM Debian (linux) OS I don't expect it working fast nor handling big scenes (I'm just ...
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111 views

Blender 2.93 for Ubuntu 18.04 ARM64? [closed]

I got myself a Nvidia Jetson Nano (actually I got a compute cluster of 5 [picocluster]) which comes with Ubuntu 18.04 The blender on Ubuntu 18.04 is pretty old. I was hoping to test out the newer GPU ...
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1answer
202 views

How to make perfectly rounded corners for 2d rectangle?

Does anyone know how to make rounded corners for a 2d rectangle? ...
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0answers
53 views

Why is OptiX using so much CPU instead of GPU?

I'm rendering an animation & chose OptiX since I have an RTX 2060 for my GPU. I also clicked on my CPU since I thought "Hybrid rendering is allowed so it must be faster" (I'm new to ...
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1answer
17 views

Adding Graphic Card Does not increase FPS

My System Specs: i5-2.4-3.2 16 GB RAM SSD attached ........................ Blender works fine but it lags a lot even 100 frames animation of default blender box takes an hour. FPS are at 3.5-4 In ...
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581 views

System out of GPU memory

Since I got my new GPU this error comes up from time to time when rendering a small (100 frame) animation. At the top of the renderview (F12) it says "System out of GPU memory". When I ...
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21 views

OpenCL Support for GeForce 710M

I have a laptop with Nvidia Geforce 710M GPU, and it is listed as supported to Blender's OpenCL and CUDA Accelerations. https://code.blender.org/2019/04/supported-gpus-in-blender-2-80/ A.k.a 200 ...
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23 views

Can I improve rendering time my using my integrated graphics card?

So I am using UBUNTU, and I would like to know if I can improve rendering, maybe by installing OpenCL. When typing lspci | grep VGA i have the following: Also, blender apparently uses only CPU So my ...
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24 views

Shader renders black in GPU, everything else is fine?

I just got a new graphics card that's really helped speed up my cycles renders but when I use GPU to render it makes one of my shaders completely black, but everything else renders fine? If I render ...
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21 views

GPU Render Greyed Out Since nVidia Driver Update

Longshot, but thought I'd ask incase anyone else has seen this. I updated the drivers for my RTX 3090 and "GPU Render" is greyed out. If I go into preferences > system and uncheck & ...
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7k views

cycles stuck at loading render kernels

ever sense I have been using the new LTS version or a newer version of blender its not loading the render kernels or sometimes it will but its just painfully slow even with the default cube scene has ...
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1answer
50 views

AMD GPU on Mac not showing up?

I installed Blender 3.0 Cycles X using a.dmg file. I've tried 2.93 but that doesn't work either. The GPU is AMD Radeon R9 M370X, and I've checked Blender's website and it should work (OpenGL is 4.1) ...
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54 views

Blender runs out of GPU memory on Linux but not on Windows

(I'm using Pop_os, a Ubuntu based distro) I have a scene that runs out of memory very frequently on Linux and causes it to crash, rendering that same scene on Windows has no issues and works just fine....
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50 views

Blender doesn's use the graphic card to render and only use the CPU

When I hit render, doesn't matter what settings I change, blender only render the scene with my CPU ignoring my GPU(Nvidia 1060 with 3 GB of RAM). I've tried in edit ---> preferences---> system -...
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258 views

Slow Workflow with RTX 3060

I am quite desperate, because I just bought a new laptop (XMG CORE 17 - E21qzj FHD i7 16GB 1TBSSD RTX3060 W10H) and I tried to adjust all the settings, but it is just so slow. Right now I am trying to ...
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34 views

Cycles checkerboard pattern only on GPU [closed]

I am trying to render a short smoke scene using cycles. Everything works fine (even if slowly) when I am using the CPU, as shwon below. However, when I try using my GPU, it looks like some parts of ...
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1answer
42 views

Blender don't see my GPU Nvidia Geforce 820m, why?

Why is this happening and how to understand which card suits Blender and which one does not?
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45 views

Why isn't my GPU rendering anything in blender (cycles)?

I have a non-compatible GPU that I want to use in blender. I realize that you can't use non-compatible GPUs, but I saw this video where someone uses the windows command prompt to enable it. To my ...

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