Questions tagged [memory-management]

Questions related to memory consumption. This refers to both RAM (Random Access Memory) usage and hard drive space.

38 questions with no upvoted or accepted answers
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592 views

Why is there slowdown on a high poly mesh in edit mode when all faces are hidden?

I've been wondering this for years now, so I'm working on a high poly mesh and I've hidden all but 50,000 vertices, there's a fair bit of slowdown and I kind of get that but even if you hide ...
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379 views

.blend file size much larger after OpenGL Render

I am working on a detailed dialogue scene that is 600 mb. It is a very complex scene, with each part in single layers. I know that is a very big file size, but what my machine can handle it. What ...
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155 views

Garbage collection in Blender leaks memory

I'm working on an iterative process for optimizing the placement of some objects. This iterative process seems to leak the memory (I use numpy matrices). I do destruct the lists and matrices after ...
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278 views

Why does Blender use so much RAM for a mesh?

I'm noticing when loading a 250mb OBJ file (high resolution mesh), Blender goes from 89mb RAM to around 2.1gb. Loading the same mesh in Preview.app uses around 300mb. Why is that? Is there a way to ...
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398 views

Is there an easy way to see what is consuming the most memory?

Is there an easy way to see what is consuming the most memory? For example: -Objects / Object data -Textures -Lighting -Particle Systems -Material duplicates -Caches -Anything else that can cause ...
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224 views

What method is more efficient for making duplicate of an object: mirror it with modifier or instancing it?

I wonder what method i should use for making copies of original object, what is more memory/render efficient: mirror my object with modifies - "Array" or "Mirror" or instancing my object with Alt+D?
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232 views

How to retrieve context after a outliner.orphans_purge()

I've got a script that joins several object into one at every frame and then do several operations on the duplicated object. However, I know that when a object is deleted in blender, meshes are ...
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591 views

Can Cycles CUDA utilize more than 2GB of VRAM?

I'm trying to make a render with dual Titan X's, they have 12GB of VRAM each. If I ramp the tile size up it eventually slows down seemingly due to hitting a 2GB cap? Is there a way to have the ...
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214 views

Not enough RAM for baking particles

Faced with such a problem - there is a system of particles in settings exposed saving cache to disk next to the file. Also, 400 frame animation of the object. The problem is that baking stops at 100 ...
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74 views

is it possible to limit texture resolution by distance?

I know in the simplify tab you can set a reduced texture size for all of the scene, but is it possible to reduce the texture size in vram based on distance from the camera? For example I have a 2km ...
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22 views

bpy.ops.object.scale_clear(clear_delta=false) (the alt-s command in 3d view) lowers ram usage?

One of my projects has a script that creates thousands of objects every time it runs and even though it deleted the old objects there's still a ram build-up over time. For example, just now it hit ...
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92 views

Blender Out Of Memory and Crashing

I'm trying to create a mountain scene in Blender and when i started adding some bump mapping blender started absolutely eating up RAM (quickly shooting up to the 8GB I have) and then running out of ...
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561 views

Finding out what makes your file size big?

Is there a way to see exactly which objects/textures/etc in my scene take up the most memory? My scenes often get rather big, bigger than I feel they should be, and rendering them obviously then tends ...
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115 views

Full render in one tile - solution for lack of memory?

I created super complicated scene using 8gb out of 6gb of vram. On the way of trying to reduce memory usage I saw many times my gpu rendering only one tile, with all samples, and skipping rest of the ...
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142 views

I “run out of application memory” when trying to render a scene

I spent a long time designing a scene which involves 5 particle systems (no more than 1000 particles in each), and now I would like to render it. Unfortunately, I invariably get this error message ...
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262 views

How do I get blender to leverage all the memory I have?

There are probably so many noob-facets to this question that it's not even funny. Basically I've never fully understood memory usage, despite being a professional digital artist for many years. In ...
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122 views

What are the memory readouts referring to?

There are two sets of memory readouts I'm puzzled by. I need a better explanation of what they mean. One is in the Info Window and says something like Mem:119.14M(9.99M) One is with the render output ...
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378 views

render 1 Frame of Big Buck Bunny fails

Im trying to render a single frame of BigBuckBunny with blender 2.72b on linux. I downloaded all the files needed (2d blender files + http://graphicall.org/bbb/index.php ) Now I want to render a ...
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17 views

Why does Movie Clip Editor use so much memory?

What's the reason behind blenders intensive use of memory when it comes to video editing/tracking? I'm using Blender 2.8 and currently have a ~15 second clip loaded (@50fps, 3840x2160, 99779kbps, ...
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31 views

Cycles - Memory is not being freed

Blender 2.8 Cycles - Memory is not freed after using Z -> "Lookdev" or "Rendered". It seems like the data is staying in memory, even when switching back to Wireframe mode. This causes problems when ...
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26 views

Is my hardware what's causing Eevee not to render?

I've been using Blender 2.79 for a few weeks and just upgraded to 2.8. I want to try out a bunch of new tutorials using Eevee but it looks like I might not have a powerful enough computer. I've been ...
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24 views

Memory requirement /management for blender

I was trying to open a large scene (970mb) OBJ file in blender and it sucked all 16gb of my ram and crashed. I figure I need to increase my ram (thinking 64gb once the 3900x is back in stock) but in ...
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34 views

Blender 2.80 specific changes which eats RAM massively

This is done on a 8GB Linux machine, which runs Blender and openbox as window manager and nothing else (beside common system demons etc). Blender files, which successfully render (GPU/Cycles) with ...
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26 views

Why does my PC crash at the end of a low intensity render?

I am trying to render an animation, I have rendered scenes much more complex than this before on my PC yet I have recently been running into problems when rendering almost anything. My PC tends to ...
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33 views

Sharing of host memory between GPU and CPU. Is this implemented and working in 2.80?

Does anyone know if sharing of host memory between GPU and CPU for rendering has been implemented and/or working in 2.80? Thanks.
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46 views

How can I stop my Blender script from eating my entire computer's memory?

I'm working on a project that loads a bunch of 3D models (around 100 models) into a scene, exports a render, then deletes all the models and loads in 100 fresh models into a new scene, then dumps them,...
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143 views

Vega HBCC support

Hello guys! Been experimenting with Vega GPUs and the HBCC option recently and although I didn't have scenes big enough to top 8GB of memory I finally found a way how to do it; just opened 2 of them ...
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158 views

Same scene 1 GPU = OK, 2 GPUs = Out of memory?

Strange, strange problem this one. Intro: I had cycles with these 2 GPU + CPU working well for renders. Then, after some time, I took the 750ti out and continued working with only the 1070ti + CPU ...
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136 views

Blender eats up all memory and crashes upon simple small texture

So this one is really infuriating me as I cannot figure it out. I've created a terrain with textures and a skybox in layer 1 just fine and all looks well. It's also very responsive and works great, ...
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38 views

System priorities for a good value set-up

Hi This is my first post as a newbie on this forum, so forgive me if I get any of the rules wrong. I'm a film maker who's just packed in the day job with ambitions to make a micro-budget feature film ...
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28 views

Issues at both little and large scales, not understanding the render

I have serious trouble understanding this: 1.- When i work on my project, im building a house into a mountain but "walk mode" seems to tell me that my project is very little, as I cannot walk into ...
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2answers
340 views

Game Engine: Can I load objects and scenes into memory?

Is there an option to load objects/scenes I want to memory to prevent lags? I don't want to let all objects spawn to buffer them or other tricks. How can I do this? And is it possible to remove them ...
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57 views

Basic Cycles memory usage @98%?

I have a scene that sometimes crashes for CUDA errors (out of memory). So I put all elements on separate layers to figure out in rendered view which was the culprit. Turns out, even if I have only ...
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0answers
509 views

Growing memory usage when rendering animation

I'm using Blender 2.77a with Windows 10 64 bit on a 8 GB RAM PC and AMD R9 390 graphic card with driver 16.4.1. When GPU rendering a very simple animation (350 faces, 150 frames, single PNG files) ...
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1answer
129 views

Blender very laggy

So I have an MSI GeForce Gtx 1080Ti 11Gb and an Intel i7 7820X but when I open up a scene in blender and try to pan around in solid mode and when I try to preview the animation it only plays at 1 fps ...
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2answers
251 views

Cycles/ CUDA out of memory (sometimes)

like many other posts, I am getting CUDA error: out of memory when I am rendering out many images for an animation. But- when I close Blender, and restart the rendering process from the stopped image,...
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1answer
144 views

Blender running out of memory in renders, but having no problem in previews

I am dealing with problem of... Out of memory in cuMemAlloc(&device_pointer, size) Even though settings are the same in render mode and preview mode I have never encountered this issue in the ...
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1answer
2k views

Limit Blender RAM usage?

So Blender started crashing whenever I bake fluid for no reason (I mean no reason, discussion here). I'm thinking maybe reducing the amount of RAM it uses could help, but I can't figure out how to ...