All Questions
Tagged with rendering performance
23
questions
19
votes
3
answers
49k
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 ...
- 291
13
votes
3
answers
14k
views
Why is rendered viewport faster than rendering individual frames?
When I'm using rendered viewport it initially takes a while before rendering starts, but once it does, I can freely move around and rendering a new view happens almost instantaneously. When on the ...
- 2,418
21
votes
5
answers
42k
views
How to configure blender so that it uses only 50% of total CPU when rendering?
I need to render a very computer-intensive scene using cycles and for some reasons, I decided to use my home computer (i5 3.30 Ghz, 10 GB RAM, 2TB Hard Drive) to render it. However, the problem is ...
- 711
20
votes
1
answer
18k
views
What does static/dynamic BVH do?
In the render properties panel, under the performance rollout there is a setting for static vs. dynamic BVH. I am simply wondering what this setting does.
From the Wiki:
The raytracing ...
- 25.2k
24
votes
4
answers
15k
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 ...
user320
10
votes
6
answers
46k
views
Best Tile Size for Blender Internal Renderer and Cycles
There've been a few discussions about tile sizes for Cycles, but none that I can find about that of BI. Since it renders with the CPU, does it follow the same rule as cycles where smaller is better (...
10
votes
1
answer
23k
views
What is Clamp Direct/Indirect?
What does the "Clamp Direct" and Indirect values mean? I may seem silly but i'm really new to blender. Could you please tell me what are they useful for? Thanks!
- 125
8
votes
3
answers
4k
views
Managing/Reducing noise in a night scene
I've been trying to get a pretty noise free image from this scene for a while. And nothing seems to be working. I've been trying to use 3000 samples, then rendering different noise seeds and composite ...
- 209
3
votes
1
answer
2k
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
1
answer
33k
views
Why is my render taking so long?
My interior is rendering almost two hours and it shows only 2 samples that have been rendered. I don't quite know how to select properly those render settings to make good quality interior scene.
...
- 73
22
votes
5
answers
10k
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 ...
- 25.2k
7
votes
1
answer
4k
views
Blender Cycles Slow Rendering Interior Scene
I have create a very basic blender scene with Suzanne and a modified cube with no UVs and only basic materials. The scene contains about 3 emissive lights.
Using the cycles rendering engine, when ...
- 339
3
votes
1
answer
400
views
rendering frame with image save every .... ( 100?) samples
For a project I'm working on I want to do some test renders to see how many samples I would need for the final image. I want to do this as time efficient as possible so I was wondering if there is any ...
- 116
0
votes
1
answer
2k
views
Dual GPU doesn't speed up rendering in Cycles
A few days ago I finished a build, including two Titan XP.
The goal was to get faster rendering, letting the gpus work as two seperate cores that render two chunks at the same to nearly double the ...
- 3
7
votes
2
answers
13k
views
OpenCL vs CUDA Rendering
Nowdays I have the old Radeon HD 6870, and it's not compatible with OpenCL, so the rendering is made by the CPU, that is a quite slow comparing with GPU rendering.
I'm thinking on a upgrade to R9 380 ...
- 193