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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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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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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42 views

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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32 views

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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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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396 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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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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What is the most computationally efficient way to make ripples?

I know you can use Dynamic Paint as well as Fluid Simulation with Force Fields to make ripples. I'm sure there are other ways as well. Which way is the least memory and processor intensive of these?
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2k views

Blender error: out of memory

I have never used Blender, so I'm totally new to the software, but today a friend of mine asked me to use my computer to render a picture for him since he doesn't have a powerful PC. So he gave me the ...
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325 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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Does Blender have a software-limited amount of RAM it can use?

The other way to ask this question is, are Blender's memory limitations solely hardware related? Or, is there a point at which Blender will either crash or fail to use additional memory, even though ...
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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

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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284 views

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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188 views

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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179 views

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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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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1answer
54 views

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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2answers
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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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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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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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172 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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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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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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60 views

Is there a way to limit max RAM usage by Blender?

Since I'm fairly new to Blender, I'm not always aware of its (and my system's) limitations, and I accidentally overload my RAM kind of frequently while experimenting with for example adaptive ...
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1answer
27 views

how can I share variables between glsl and python in the bge?

I am currently writing a glsl shader in the bge, My question is, if I have glsl embedded into my python script, how can I if possible share memory/variables between my glsl and my python so the below ...
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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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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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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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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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216 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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416 views

Why does memory and file size increase when objects are joined?

Why does memory file size increase when objects are joined? As you can see from the pic I am working on a building. When the objects are not joined file size is 50MB When I join them the file size ...
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1answer
300 views

How to remove unwanted textures to save memory

I have two textures in Blender that are for a desk I am modeling. Each texture is 4K quality and takes up a ton of memory. I only have 4GB of memory on my computer, so I can't render an image of my ...
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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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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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448 views

Best GPU and RAM upgrade for compaq elite 8300 sff [closed]

I would like it to be equal or less than seven hundred dollars American. Thanks in advance!
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363 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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1k views

Why does Denoising take up so much memory?

I tried to render my scene with the new 2.79 Denoiser. During the Rendering Process everything was fine, my memory peak was about 1000M but as soon as the Denoising started it suddenly shot up to ~...
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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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365 views

Can Blender use Virtual Memory?

I have 2GB of RAM and I just want to use this program. Can Blender use Virtual Memory? Getting one image rendered takes like 20-30 seconds and it's not even on the full resolution.
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227 views

Can I use a USB drive as memory for rendering?

I have a really low-grade laptop and I find that I run out of memory for rendering even very basic stuff. I have a thumbdrive and I was wondering I could use it in place of RAM. Does blender allow for ...
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1answer
112 views

Is there a way to make objects take up less memory?

me and my friend are competing in a game making competition, (a competition where you compete with other people to make games), and in this competition the smaller the game size, the better you are ...
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2answers
71 views

Segfault when going back to Object Mode, on unrelated data

I am writing an Addon. I have a list of Vectors: centers = [p.center for p in obj.data.polygons] In a later section of code, I do the following to a different ...
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1answer
129 views

Passing data from one running instance of script to the next

I am looking for the most efficient way to save data from one run of a python script to the next. My script generates a list , say presentList . The list is made up of a number of integers. Next time ...
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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.