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LRC seems to have severe GPU memory leaks, at least v.13.3. It keeps growing till consuming 80-90% of 12GB VRAM (*), at which point all GPU-intense operations such as AI noise reduction become unberably slow, so I have to restart every 20 minutes or so. It does not contribute to a smooth workflow.
Does anyone know a simpler workaround than just restarting the entire thing (that does not involve disabling GPU acceleration of course)?
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Most likely a bug specific to your graphics driver. Please do the LR menu command Help > System Info and copy/paste the entire contents here so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.
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Sure, see below. Thanks!
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"NVIDIA GeForce RTX 3080 (31.0.15.3598)"
That driver is a year old. As a next step, update to the latest Studio driver here:
https://www.nvidia.com/download/driverResults.aspx/224748/en-us/
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Graphics Processor Info:
DirectX: NVIDIA GeForce RTX 3080 (31.0.15.3598)
Init State: GPU for Export supported by default
User Preference: GPU for Export enabled
That would be v535.98 for the GPU driver, released back in May 30, 2023. So a year old. A GPU driver a year old can be considered as Ancient for LrC.
At NVIDIA, for the Studio driver, v 555.85 is shown as current. Released May 22, 2024
(note, the NVIDIA Game Ready drive, is also currently v 555.85, but NVIDIA recommends Studio drivers for creative apps/users)
Dedicated GPU memory used by Lightroom: 13884.1MB / 12107.0MB (114%)
yep, something nasty going on with that.
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I updated to NVIDIA GeForce RTX 3080 and optimized the settings for LRC in GeForce Experience.
The problem did not go away. I cannot tell whether it is less (or more) pronounced, but it is definitely there.
I also still see more than 100% used for GPU memory in System Info. After ~15 minutes of editing that includes AI-based features GPU memory consumption goes up and down in the range of approx 88% to 115%.
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I have the same issue. It looks like it has to do with the AI-maskings.
I can reproduce the memory fill process of the VRAM:
Go to develop editing a image with AI-masks
hit "Ctrl+Alt+U" to refresh the masks
See GPU Memory go up and stay up (sometime it takes 2-3 images)
It fill the whole GPU until Windows starts to stutter
What I tried so far:
Driver updates -> latest (NVIDIA Studio)
LrC -> latest
1 Screen -> no change
Set graphics accel to custom only leave "Use GPU for display" activated
I'm not sure but I think there are two possibilities:
There is a bug in the AI-masking code that does not free memory after masking
It is intentional to keep this in vram as cache for faster analysis
@Adobe
Please search and fix the bug in AI-masking and / or update the documented recommended specs. But if it is a bug, even 24GB+ VRAM will not help as it just fills up and eventually start stuttering as well.
Another thing that really bothers me. Every single LrC update I had only worked with the absolut newest studio nvidia driver. Sorry but such a large company should be able to bring an update and support at least the latest two versions and make sure the app does not simply crash all the time. Other devs makes this work as well and they use a lot more complex stuff of the GPUs than you do.
Here are my sysinfos:
C:\ drive is a 2TB NVME drive
D:\ drive is a 1TB NVME drive (import and work drive)
P:\ drive is a TrueNAS connected with 10Gbe (stores finished images)
All LrC paths including the process are excluded from Windows defender
LrC sysinfo
Lightroom Classic version: 13.3 [ 202405092057-40441e28 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 11 - Business Edition
Version: 11.0.22631
Application architecture: x64
System architecture: x64
Logical processor count: 16
Processor speed: 3.6GHz
SqLite Version: 3.36.0
CPU Utilisation: 1.0%
Power Source: Plugged In, 255%
Built-in memory: 65395.9 MB
Dedicated GPU memory used by Lightroom: 8687.7MB / 12110.0MB (71%)
Real memory available to Lightroom: 65395.9 MB
Real memory used by Lightroom: 5258.6 MB (8.0%)
Virtual memory used by Lightroom: 15919.0 MB
GDI objects count: 1018
USER objects count: 2654
Process handles count: 4114
Memory cache size: 1398.4MB
Internal Camera Raw version: 16.3 [ 1863 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 1624MB / 32697MB (4%)
Camera Raw real memory: 1077MB / 65395MB (1%)
Cache1:
Preview1- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4148.cr3
Preview2- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4194.cr3
Final3- RAM:190.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4314.cr3
Final4- RAM:458.0MB, VRAM:5183.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4256.cr3
Preview5- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4489.cr3
Preview6- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4180.cr3
Preview7- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4522.cr3
Preview8- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4329.cr3
Preview9- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4183.cr3
Final10- RAM:197.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4249.cr3
Preview11- RAM:21.0MB, VRAM:0.0MB, 2024-05-09-r6m2-shooting-redacted-redacted-02-4514.cr3
NT- RAM:1013.0MB, VRAM:5183.0MB, Combined:6196.0MB
Cache2:
m:1398.4MB, n:826.6MB
U-main: 97.0MB
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Standard Preview Size: 2560 pixels
Displays: 1) 2560x1440, 2) 2560x1440, 3) 2560x1440
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info:
DirectX: NVIDIA GeForce RTX 3060 (32.0.15.5585)
Init State: GPU for Export supported by default
User Preference: GPU for Export enabled
Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
Library Path: C:\Users\redacted\Pictures\Lightroom\haefelfinger-photo-v13-3.lrcat
Settings Folder: C:\Users\redacted\AppData\Roaming\Adobe\Lightroom
Installed Plugins:
1) jf Bulk Develop
2) jf Folder Publisher
3) jf Snapshot on Export
4) Pixieset
Config.lua flags:
Adapter #1: Vendor : 10de
Device : 2487
Subsystem : 397b1462
Revision : a1
Video Memory : 12110
Adapter #2: Vendor : 8086
Device : 3e98
Subsystem : 86941043
Revision : 0
Video Memory : 80
Adapter #3: Vendor : 1414
Device : 8c
Subsystem : 0
Revision : 0
Video Memory : 0
AudioDeviceIOBlockSize: 1024
AudioDeviceName: $$$/dvaaudiodevice/SystemDefaultAndEffectiveDeviceName=System Default - Speakers (3- USB Audio Device)#{comment}DVAAU-4201250: Open the audio hardware preferences page.
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: LR5x120
Direct2DEnabled: false
GL_ACCUM_ALPHA_BITS: 16
GL_ACCUM_BLUE_BITS: 16
GL_ACCUM_GREEN_BITS: 16
GL_ACCUM_RED_BITS: 16
GL_ALPHA_BITS: 0
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_SIZE: 32768
GL_MAX_TEXTURE_UNITS: 4
GL_MAX_VIEWPORT_DIMS: 32768,32768
GL_RED_BITS: 8
GL_RENDERER: NVIDIA GeForce RTX 3060/PCIe/SSE2
GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA
GL_STENCIL_BITS: 8
GL_VENDOR: NVIDIA Corporation
GL_VERSION: 4.6.0 NVIDIA 555.85
GPUDeviceEnabled: false
OGLEnabled: true
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From what I see probably all features that use AI cause this. E.g. I observed it several times when the only AI-based feature that I used since fresh start was noise reduction. I don't think I observed the same behavior when I did not uses AI featurs.
However it could be that the problem is not AI-specific but is much more ponounced when AI is used. LRC does tend to become slower with time (unsure about VRAM usage), however without AI it typically takes hours, not minutes.
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This is a puzzling issue. I don't doubt it's real, but I have never been able to reproduce it, under any circumstances, on either of my two Windows desktop machines.
In fact, I'm struggling to even get the VRAM usage high enough for demonstration purposes like here. I am unable to get it above 80-85% or so. But this shows how VRAM usage actually drops dramatically during Denoise:
I'm getting a similar result when Lightroom Classic has run VRAM up in the 80% region, and I then open Photoshop. VRAM usage immediately drops at that point, showing that VRAM is dynamically reallocated to wherever it's needed.
I should note here that I'm working with 60 MP raw files.
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i also experienced this issue and it was observed by an Adobe agent trying to troubleshoot my entire lightroom freezing during sync.
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Just because you do not see it does not make it less real for all reporting such issues here. I'm a developer as well and I know how difficult it might be to track down such issues. In this case we have a system working with a lot of different hardware and runs code in parallel.
I also found reports of Apple users having similar issues. Some might be related, some not but to me there are enough indicators, that it might be an bug. This issue might only happen under specific circumstances but it happens even if the chances are low.
Is there any open ticket where we could contribute to? I'd also be happy to do a betatest if the have a potential fix.
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I just contacted adobe support and as far as I know now, they work on this issue. They also have released fixes for the mac version where similar issues occured. I do not know when they have a fix for windows. I also understand that this is not trivial to fix in such a complex system (I'm a developer as well). So it will take time.
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Yeah, that's why I actually asked for a workaround for now, not even a fix. Restarting LR every 20 minutes is a pain. I could not find doing this w/o a restart, but the fastest restart is ctrl+, (preferences) -> Restart Lightroom Classic.
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Yes, that makes no fun. I disabled the GPU for for export and previews. Then I have more headroom to work. After editing, I enable GPU for export again to perform the exports. I have no idea how to can work around it.
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> I disabled the GPU for for export and previews
Disabling the GPU option for 'Exports' does not have any affect on previews as they don't currently use GPU acceleration.
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Ok, my bad. I was not precise enough. I disabled it for export and image processing but kept the display on. This reduced the symptoms as AI is not competing against the image processing task regarding VRAM.
Sure, it does not stop it from happening, but I get more time until I have to restart LrC.
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I always thought the part of system info below Installed plugins didn't contain any useful information for troubleshooting, but there is a listing of adapters directly below, like this from @ph.haefelfinger
Are these GPUs or somehting else? If they are GPUs, only one should be enbabled in the OS.
Config.lua flags:
Adapter #1: Vendor : 10de
Device : 2487
Subsystem : 397b1462
Revision : a1
Video Memory : 12110
Adapter #2: Vendor : 8086
Device : 3e98
Subsystem : 86941043
Revision : 0
Video Memory : 80
Adapter #3: Vendor : 1414
Device : 8c
Subsystem : 0
Revision : 0
Video Memory : 0
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The first one is the nvidia. The second one was the GPU built in of my i9-9900k. With my current situation where the Issue still exists, I have it disabled in the BIOS. The third one belongs to some microsoft drivers. I do not see anything in the device manager. According to the www it is a microsoft basic render driver. Anyway, there was no difference if the iGPU was activated or not. The Video memory leak still exists ans slowly fills the 12GB of my 3060 until to the point where Windows stops responding and I have to restart Lightroom.
I performed driver clean installs, reinstalled LrC and removed all settings, created new catalogs and so on. I write software my own and as far as the symptoms look like it's a classic memory leak where they do not free up all used video memory used for AI computations. With each iteration in the AI Part, there is a part of the memory leaked. Can be seen with procexp64 quite nice. It does not matter how often this issue happesn. This is just a bug that has to get fixed. That Adobe has some clear backlog and a learning path ahead in working with graphics cards is obvious. Otherwise it would not be such a volatile situation when it comes to driver versions and stability of LrC.
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Adapter #2 seems to be active, it reports using 80 MB memory.
Does it appear in Device manager?
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It was active when I took the sysinfo. I deactivated it and it did not change anything. It's really nice that you try to help me but please read my answers as well in detail. It does not matter if the iGPU is active or not. The issue persists anyway.
What I did so far:
Nothing really helps. While some with 24GB VRAM might get away longer, I face the issue with 12GB VRAM a lot faster. So it is a bug in LrC for sure. Why? There is no other application I run so far (including games) that have this behaviour. So it has to be in LrC and is not an issue of the system.
An before you ask: I'm an IT professional and software developer myself. I really know how to configure my system to run it stable and optimized. I also understand that such leaks might be tricky to find and take time.
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I have experienced similar issues on multiple platforms (changed primary computer recently). In general, my experience is, Lightroom leaks in multipe areas, not just GPU usage.
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I agree. However in other cases it seem to take much longer before restart is needed - hours, not minutes.
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Lightroom memory usage. It takes 15 minutes of light developing to completely fill my 64 Gig RAM. Turning off GPU made no difference. Reinstall no difference. I would love Adobe to fix this because Lightroom Classic is not usable in its current state.
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Add me to the list of people having this issue. Earlier in this summer I upgraded my PC from 64GB RAM to 128GB of RAM. I have an NVIDIA 4080, While editting I've been watching this in task manager and have watched GPU memory usage grow until its sitting right below 16GB in use.
This is clear some mismanagement of GPU resources as if I continue to work eventually things will freeze and a lightroom restart is needed.
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Are you using the Stodio driver or the Game Ready driver? I've seen a lot of problems reported with the latter.
Do you have the additional components installed, GeForce Experience and PhysX? Try to uninstall them. They are not needed, and, again, I have seen problems reported that disappeared when they were uninstalled.
When you install a new driver, check "clean install" to remove all traces of the old driver.