Questions tagged [memory-management]

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

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Blender using 2gb of memory when idle & Using CPU in GPU-only mode [closed]

I'm running an i7-8700k, a Titan XP with 12gb of VRAM and 16gb(2x8gb) DDR3 memory. The scene I'm currently editing has only a few objects; I have two train tracks with one train driving on them (1 ...
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Is there a way to precache an Alembic sequence on RAM for faster playback?

I've been working with large Alembic files on a project recently, some in excess of 3 or 4 gigs of data and thousands of frames. I notice that viewport playback takes severe hits with every ABC object ...
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CAD file really slows down Blender file

I've started a new file and imported a relatively simple CAD file (DXF, 32Mb). After converting all to meshes and separating into individual elements, it's now got to the point where the file is ...
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Out of memory on render despite enough space avaible

I am trying to render a small scene using cycles on a cluster. The operating system is Linux and the Blender version is 3.1.3. The avaible GPU is an NVIDEA RTX 2080 TI and avaible ram 117 GB. Although ...
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Do duplicates of the "Group input" on Geometry Nodes waste memory?

I started using geo nodes recently and sometimes the "Group input - geometry" is so far away and there are so many overlapping connections... I don't know if doing that makes any noticeable ...
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Animating a lot of "hide_viewport" properties uses loads of RAM and crashes Cycles

I have a lot of asset-collections in my scene, which are instanced into a "host" collection. In this collection, via script, I set the "hide_videport" and "hide_render" ...
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How to free memory in python?

I am trying to traverse a list of .blend files to get the information inside them. However, I can not free the memory, causing the OOM error. The code is shown as below. ...
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Blender on my working Laptop has a serious memory leaking problem and i dont know why

It's weird becausei dont have this problem on my laptop at home, but when i open blender on my job pc it starts up with around 1000/1500 mb, but when i just add keyframes with grease pencil it just ...
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More efficient usage of the computing resources by running several Blender instances

I'm using Eevee to render a mesh sequence imported with Stop Motion OBJ in "Streaming" mode. I only have 1 or 2 such mesh sequence in the scene. I play the sequence(s) while the camera is ...
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Out of memory only on Render

I just upgraded from a 1060-3gb to a 3070 ti so I'm not sure if i haven't set it up properly but everything runs perfect and smooth in the viewport with out nearly maxing out my card, however, as soon ...
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Blender keeps freezing part-way through render at random frames

So, I've been trying to render this 2-3 second animation in cycles at 1250 samples, but I've been having this weird issue recently where the Blender render would freeze on a frame in the middle of the ...
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Blender Preferences > System > Memory & Limits = RAM or VRAM?

I'm trying to optimize my Blender 3.0 under Windows 11 and I occasionally get a render error stating that I've run out of "GPU Memory." Blender Preferences > System offers various memory ...
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Out of memory error when rendering simple ocean modifier (20GB)

I was experiencing issues with the OCEAN modifier, and then I tried to render it alone, and the same error occured (only 10.000 faces). I have seen a tut in which the guy used way higher resolution, ...
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Why importing same fbx model gets slower?

I made a simple process due to clear some problems on my project. It is just repeating clean_blender -> import model And I ...
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I have 32 gig of ram and blender 2.8 becomes sluggish and jittery and becomes unresponsive when I load a scene with 3,332 objects and 1.4M triangles?

I have 32 gig of ram and blender becomes sluggish and jittery and becomes unresponsive when I load a scene with 3,332 objects and 1.4 triangles ? I forgot to mention there are over 900 armatures in ...
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My file isn't rendering and attempting to do so sometimes crashes PC (memory-related?)

I am trying to render a still frame of a complex scene. When I render I often watch the tiling render the scene over that default checkerboard pattern, and it usually finishes the whole image. However,...
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Blender python iteration of importing model gets slower

I'm doing a project with python in blender and let me summarize its process. Import a .pmx file(kind of 3d model) ...
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Optimize blender

I have been using blender since 2.7 without any problems. Recently I upgraded to blender 2.93 (latest as of today) and I noticed that longer it is open, the lesser it responds. Yesterday, while ...
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Scene is too heavy; how to identify most 'expensive' objects

I have a scene which is taxing my computer memory such that blender is almost unusable (not even talking about render here, just UI). I know I have a few very expensive objects, but it's been a few ...
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How to know how much RAM a FLIP Fluids fluid simulation will require?

I'd tried to run a really big fluid simulation with FLIP Fluids (built from source on Linux). I am not using the default fluid simulator. However, I wasn't happy with the quality of it, so I upped the ...
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Is it possible to import gltf in python using file-like objects?

I have encrypted and zipped gltf files on a server. I need to import them in blender directly. I found the way to load, decrypt and unzip the files to end-up with something like this : ...
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Rendering multi-view directly to disk instead of RAM

I've set up a Stereoscopy -> Multi-View rendering to render hundreds of cameras with a Python script. Multi-view renders the cameras much faster than looping over ...
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Blender free up memory using command line

Note: This is my first post, so if my title is not appropriate, please let me know what an alternative could be for more relevant answers :) I am rendering a scene for someone(so no way for me to ...
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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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Blender 2.93 status line says, "Memory: 7.19 GiB | VRAM: 7.7/8.0 GiB

Why does the status line say VRAM x/8.0 GiB? If I understand correctly this is saying that I am using x of 8 total. But I have 32 GiB total so why doesn't it say VRAM x/32 GiB?
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VSE Memory Usage KEEPS climbing! (To 50GiB before eventual crash)

TL;DR The Blender video sequencer memory usage climbs and climbs to a total of 40/50GiBs (RAM+Swap, I presume) until Blender crashes. It is impossible to render the entire sequence. I am using Blender ...
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Blender Crashes on "Freestyle"

I was setting up a simple scene, but with some particles and grass. It renders just fine. But after trying to use the "Freestyle" option, the required memory jumps from 9 to 15GB (when ...
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out of memory while rendering and sheep it is not rendering the specific material

my problem is that whenever I try to render a video on my laptop it says out of memory so I figured out that using a render farm is the choice it renders on the render farm but the problem is that two ...
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Out of memory after rendering thousands of similar scenes

I have a project on which I have to render thousands of different screenshots of a scene. It is basically a for loop that changes the scene, calculates some stuff and renders. However after around ...
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Particle system to create texture

I've made a forest scene with Botaniq add-on with lots of grass and trees which means lots of particles. Obviously slows everything down massively. Is there a way to "freeze" layers or ...
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Animation playback aggressively eats memory, doesn't give it back until program is closed and reopened

Blender is smooth as butter when I first open my file. I can work and move and edit etc with no lag. But after a few paybacks of my animation it will become more and more laggy. Taking a look at the ...
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Why 38000M peak when trying to render image [closed]

When I am trying to render an image with 32 samples the peak M gets to 38000 and the crashes with CUDA error for not enough GPU memory. We just bought a new computer Rtx 3070 32 ram Cpu AMD ryzen 9 ...
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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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Blender uses more ram than my pc has when rendering

When I preview cycles render in viewport, the performance is solid and using 1 or 2GB memory. However when I render, at 128 samples, my pc freezes after about 2 seconds. Also, I have only got 16GB of ...
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Render using way too much memory no matter how much I lower settings

I am trying to get my render time much lower. It's taking about 10 minutes a frame. which is obviously way too long considering that I need to do over 800 frames maybe even over 1200 by the time the ...
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2 votes
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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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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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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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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 ...
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Relationship of textures and GPU/CPU memory [duplicate]

I am trying to transition from Eevee to Cycles on a very big scene. I am using: ...
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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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1 Nvidia 3090 or 2 Nvidia 3080s for a 3d workstation? [closed]

Currently I'm running very large scenes for particle animations / simulations. I'm particularly concerned about the memory management distribution of the 2 3080 gpus approach for these very memory ...
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Poor Undo Performance: Blender 2.9

I'm having issues with Undo locking up Blender on the first undo action following some action. This happens whether I remain in one mode, or on one obj. Basically say I rotate a joint and I don't like ...
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2 votes
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How do i turn multiple of the same object into instances?

I have need to render a scene but have been running into trouble because it would run out of memory. The scene has a lot of leaves (999 to be specific) and they are all identical. How would i turn all ...
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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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Keeping Shaders in Memory

Is it possible to make Blender keep shaders in memory instead of reloading them each time I switch back to lookdev or render view? I am losing a lot of time switching between the views simply because ...
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3 votes
2 answers
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Scripting - Where is data not shown in the "Info" panel shown?

I notice that Blender only logs certain things in the "Info" panel. Is there some other place that they log data(such as if one were to have 3 vertices selected, where would they store that ...
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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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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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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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