Questions tagged [memory-management]

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

55 questions with no upvoted or accepted answers
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633 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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262 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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392 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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32 views

Are there any known solutions to generic memory leaks?

I'm running Blender 2.91.0 (This is a completely new install) and as I use it, it starts to run slower, and the amount of memory it uses according to task manager steadily increases. If I shut down ...
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22 views

Large memory consumption upon loading model

When I import a single large STL (700MB), Blender uses 3GB of memory. This is before any operations have been performed. While editing, the memory consumption jumps to 16GB and my computer grinds to a ...
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0answers
36 views

Understanding Memory Usage Whilst Rendering in Cycles

I am trying to understand memory usage whilst rendering in Cycles with a view to making good upgrade option decisions. I have a large scene which for my system is very heavy to render. I have 32 Gb of ...
2
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0answers
27 views

What is the smallest possible .blend file size in 2.8x?

I'm trying to make a container library .blend file for common node groups and I cannot get the file to be smaller than 51.3 KiB (52 506). Can you do better?
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0answers
484 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 ...
2
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0answers
1k 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 ...
2
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0answers
809 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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0answers
266 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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290 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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606 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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252 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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28 views

NVLink Pooled Memory Issues

My issue I seem to be having on one system is NVlink is plugged in, SLI States enabled maximize 3D, but still the information is duplicated. both cards are 2080's and the scene is a total of 11.6 gb ...
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199 views

Relationship of textures and GPU/CPU memory

I am trying to transition from Eevee to Cycles on a very big scene. I am using: ...
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77 views

fully clear scene and cache from scene collections and their embeded components e.g. objects, meshes, materials etc

I have a script which I am loading mutliple .obj files of room models from the disk. Each .obj goes into sub-collections depending whether it is a room in the same house or not. In the beginning of ...
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14 views

Efficient rendering of animated urban scene (using LiDAR point cloud)

I have a colourized aerial laser scan of a municipality that I would like to render in an animation. Below is an example I created for a small subsection: https://drive.google.com/file/d/...
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44 views

How do I fix the Cuda out of memory?

I just created a scene in blender with some 3d models, but when I tried to render it, I just got the error Cuda: out of memory. The scene is really small, just 5 models, which are not high quality. I ...
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116 views

Blender crashing on memory usage problems? Results of several tests

I need to produce images of a certain minimum size (1000kb) when written to disk as a jpg file. for images that are not big enough, I am attempting to increase their size to the minimum by increasing ...
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0answers
210 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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24 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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0answers
188 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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0answers
130 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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1answer
398 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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149 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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263 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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364 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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131 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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393 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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16 views

Do collection instances use less memory than duplicates?

I can't find a straightforward answer to this anywhere. I just wanna know what the fastest way to view multiple objects is.
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14 views

How to duplicate linked an entire model?

Lets say I've modeled a window (with the frame, glass, handle...), set the constraints limiting the translation, and set the parenting hierarchy. Now I'd like to reuse the entire window somewhere else ...
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65 views

Error, too many subdivision?

I am trying to render a still image with a well known Render Farm service. When I upload my file it returns the error: 'Project uses to much memory while rendering. Please check for too many ...
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17 views

Where does Blender store the vertex cuts the knife tool is making while it is making the cuts?

Once the knife cut is finished, the vertices it's created are easy to find. What about when the knife tool is actively cutting something, as in when the cursor has become the knife tool and clicking ...
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14 views

Slow execution and options not available RTX nvidia

Blender GIS 2.83. 1) I cannot find the setting for GPU. Mine is nVidia RTX super 7000. 2) This and other settings for cpu and gpu, I cannot find them in Preferences/System. Surprisingly slow: I have a ...
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173 views

Blender freezes for 30 seconds every time I click

I wrote one question about its limits. Blender was being cute hahaha. Still, after that scene, Blender is being a pain. I am dealing with the blue dial every click, it last for about 30 seconds, it ...
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1answer
41 views

RAM Usage in VSE

I've just rendered a video in the VSE, and the output is 14.8 MB. When I use the option to "Prefetch frames" with Proxy Render Size set to Scene render size, or even "No proxy, full ...
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36 views

Blenders Actual Limit?

Curious as to where the limit is on Blender so I quit freezing it up. I have 2.83 and I have reached the limits of Blender many times but I do not know the exact limits so I can skirt the edge. So I ...
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0answers
21 views

Using blender in Linux causes my ram to fill up

I've been monitoring my computer's performance while working on Blender. I'm currently on 2.82a. My machine is running Linux Mint 19.3. I'm currently rigging a model. While working on texture paint, ...
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15 views

Constrainted objects displaced during rendering animation

Faced the following problem. When I've rendered an animation, some details were not where they should be according to the timeframe. This problem occurs only when rendering an animation (3 problematic ...
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0answers
37 views

How to free memory?

I'm maxing my laptop memory very quickly with some of my .blend that comes from work (where I have 64Gb of Ram). Blender is slow and freezing a lot, this is almost unberable to work in this condition, ...
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217 views

File keeps getting a “Not Responding” error whenever I open a file

I'm pretty new to Blender so I am not quite sure what is happening but whenever I open this specific file, the program crashes. I've looked it up and I've seen it could be a memory error but if it is ...
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364 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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112 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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93 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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86 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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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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30 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
424 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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0answers
68 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 ...