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Description
Custom Node Testing
- I have tried disabling custom nodes and the issue persists (see how to disable custom nodes if you need help)
Your question
Hi,
Recently, I've run into memory issues which has prevented me from running my WAN 2.2 I2V workflow.
First, specs:
Gfx: RX 7900 GRE
CPU: 7800X3D
RAM: 32GB DDR5
OS: Ubuntu 25.10
Kernel: 6.17.0-12-generic
The issue: Once the high noise model runs, it looks like it's not being offloaded properly from RAM. My VRAM, RAM, and eventually SWAP get maxed out during low noise model loading until GNOME kills Comfy or my system crashes (usually the former). In the previous ComfyUI versions I would also see a bunch of "pin error." messages as well, but I haven't seen that with the latest version. I've also tried disabling smart memory and/or pinned memory; no difference.
The problem is, there doesn't seem to be a rhyme or reason why this is happening. Yesterday, I noticed that I didn't have memory issues with the bare-bones I2V template provided. I was running a workflow loaded from the PNG file of a previous generation, so I closed that and ran my saved workflow and it ran fine for a while.
Now, however, the issue is happening for even the bare-bones I2V workflow. It also happened on a fresh ComfyUI install using pure stock settings - no MIOpen, TunableOps, AOTriton, or Flash Attention; just "python main.py" inside my new venv. Closing/recreating my workflows didn't help either.
This is a recent issue - I've run my workflow dozens of times previously. There aren't any errors in the terminal output, so I can't really provide logs. If there's something I can check, please let me know.
EDIT: Added logs from a recent run. This is from a fresh install; it's only sharing the models and workflows from my main install. It also uses the nightlies from TheRock.
Edit2: Forgot to mention, ignore the iteration speeds in the sampling step. This was a first run, so MIOpen and TunableOps needed to compile first.
Logs
[START] Security scan
[ComfyUI-Manager] Using `uv` as Python module for pip operations.
[DONE] Security scan
## ComfyUI-Manager: installing dependencies done.
** ComfyUI startup time: 2026-02-06 14:24:23.998
** Platform: Linux
** Python version: 3.12.12 (main, Jan 27 2026, 23:58:14) [Clang 21.1.4 ]
** Python executable: /home/vsekar92/ComfyUI-Test/ComfyUI/.venv/bin/python3
** ComfyUI Path: /home/vsekar92/ComfyUI-Test/ComfyUI
** ComfyUI Base Folder Path: /home/vsekar92/ComfyUI-Test/ComfyUI
** User directory: /home/vsekar92/ComfyUI-Test/ComfyUI/user
** ComfyUI-Manager config path: /home/vsekar92/ComfyUI-Test/ComfyUI/user/__manager/config.ini
** Log path: /home/vsekar92/ComfyUI-Test/ComfyUI/user/comfyui.log
Prestartup times for custom nodes:
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/rgthree-comfy
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-easy-use
0.2 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-manager
Checkpoint files will always be loaded safely.
Found comfy_kitchen backend cuda: {'available': True, 'disabled': True, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8']}
Found comfy_kitchen backend eager: {'available': True, 'disabled': False, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8', 'scaled_mm_nvfp4']}
Found comfy_kitchen backend triton: {'available': True, 'disabled': True, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8']}
Total VRAM 16368 MB, total RAM 30673 MB
pytorch version: 2.10.0+rocm7.12.0a20260206
Set: torch.backends.cudnn.enabled = False for better AMD performance.
AMD arch: gfx1100
ROCm version: (7, 3)
Set vram state to: NORMAL_VRAM
Device: cuda:0 AMD Radeon RX 7900 GRE : native
Using async weight offloading with 2 streams
Enabled pinned memory 29139.0
Using Flash Attention
Python version: 3.12.12 (main, Jan 27 2026, 23:58:14) [Clang 21.1.4 ]
ComfyUI version: 0.12.3
ComfyUI frontend version: 1.38.13
[Prompt Server] web root: /home/vsekar92/ComfyUI-Test/ComfyUI/.venv/lib/python3.12/site-packages/comfyui_frontend_package/static
### Loading: ComfyUI-Manager (V3.39.2)
[ComfyUI-Manager] network_mode: public
[ComfyUI-Manager] ComfyUI per-queue preview override detected (PR #11261). Manager's preview method feature is disabled. Use ComfyUI's --preview-method CLI option or 'Settings > Execution > Live preview method'.
### ComfyUI Version: v0.12.3-6-ga1c101f8 | Released on '2026-02-06'
[INFO] ComfyUI-GGUF not found, using our implementation
[ROCm Ninodes] Successfully loaded from rocm_nodes package
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/alter-list.json
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/model-list.json
An error occurred while fetching packages: /home/vsekar92/ComfyUI-Test/ComfyUI/.venv/bin/python3: No module named pip
WAS Node Suite: OpenCV Python installed.
An error occurred while fetching packages: /home/vsekar92/ComfyUI-Test/ComfyUI/.venv/bin/python3: No module named pip
WAS Node Suite: Finished. Loaded 220 nodes successfully.
"The only person you should try to be better than is the person you were yesterday." - Unknown
Web extensions folder found at /home/vsekar92/ComfyUI-Test/ComfyUI/web/extensions/ComfyLiterals
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json
### Loading: ComfyUI-Impact-Pack (V8.28.2)
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/github-stats.json
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extension-node-map.json
[Impact Pack] Wildcard total size (0.00 MB) is within cache limit (50.00 MB). Using full cache mode.
[Impact Pack] Wildcards loading done.
[PromptModels Studio] 🚀 Loading custom nodes for ComfyUI...
[ComfyDeploy] ✅ get_last_frame importado correctamente
[GetLastFrame] ✅ Loaded
[TextPromptBlocker] ✅ Loaded
[DivisorDePrompts] ✅ Loaded
✓ GETSETNODE_PRO v1.0.0 loaded
[GETSETNODE_PRO] ✅ Loaded
[ComfyUI-GoogleAI] ✅ Nodes loaded: GoogleAI_TextNode, GoogleAI_TextNode_Simple, GoogleAI_ImageNode, GoogleAI_ImageNode_Simple
[ComfyUI-GoogleAI] ✅ Loaded
[ComfyUI-Grok] 🚀 Ready — Integrated with xAI API (Text + Image)
[ComfyUI-Grok] ✅ Loaded
✅ ComfyUI Selectores Pro cargado (4 nodos)
[Selectores Pro] ✅ Loaded
[PromptModels Studio] 📦 Total nodes loaded: 24
[PromptModels Studio] ✅ Ready!
ComfyUI-GGUF: Allowing full torch compile
[rgthree-comfy] Loaded 48 magnificent nodes. 🎉
[rgthree-comfy] ComfyUI's new Node 2.0 rendering may be incompatible with some rgthree-comfy nodes and features, breaking some rendering as well as losing the ability to access a node's properties (a vital part of many nodes). It also appears to run MUCH more slowly spiking CPU usage and causing jankiness and unresponsiveness, especially with large workflows. Personally I am not planning to use the new Nodes 2.0 and, unfortunately, am not able to invest the time to investigate and overhaul rgthree-comfy where needed. If you have issues when Nodes 2.0 is enabled, I'd urge you to switch it off as well and join me in hoping ComfyUI is not planning to deprecate the existing, stable canvas rendering all together.
[ComfyUI-Easy-Use] server: v1.3.6 Loaded
[ComfyUI-Easy-Use] web root: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-easy-use/web_version/v2 Loaded
Import times for custom nodes:
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/websocket_image_save.py
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/ComfyUI--WanImageToVideoTiled
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/ovum-cudnn-wrapper
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/ComfyUI-GGUF
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/ComfyLiterals
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/promptmodels
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-frame-interpolation
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/rgthree-comfy
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-custom-scripts
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-kjnodes
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/rocm-ninodes
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-videohelpersuite
0.0 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-manager
0.1 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-impact-pack
0.2 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/was-ns
0.4 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui_layerstyle
0.6 seconds: /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/comfyui-easy-use
Context impl SQLiteImpl.
Will assume non-transactional DDL.
Assets scan(roots=['models']) completed in 0.019s (created=0, skipped_existing=172, orphans_pruned=0, total_seen=172)
Disabling intermediate node cache.
Starting server
To see the GUI go to: http://127.0.0.1:8188
FETCH ComfyRegistry Data: 5/124
[DEPRECATION WARNING] Detected import of deprecated legacy API: /scripts/ui.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /extensions/core/groupNode.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /extensions/core/widgetInputs.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /extensions/core/clipspace.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[CUDNNWrapper] reading config from /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/ovum-cudnn-wrapper/classes_to_cudnn_wrap.txt
CUDNNWrapper: regex /image.*video.*encode/i matched no classes
CUDNNWrapper: regex /wanvideo.*decode/i matched no classes
CUDNNWrapper: excluded 2 target(s) due to exclusions
CUDNNWrapper: 'WanVideoDecode' not found to wrap
CUDNNWrapper: 'WanVideoImageToVideoEncode' not found to wrap
CUDNNWrapper: Wrapped 2 node(s) by exact string match: VAEDecode, VAEDecodeTiled
CUDNNWrapper: Wrapped 13 node(s) via regex /vae.*(encode|decode)/i: VAEEncode, VAEEncodeForInpaint, VAEEncodeTiled, StableCascade_StageC_VAEEncode, VAEEncodeAudio, VAEDecodeAudio, VAEDecodeAudioTiled, LTXVAudioVAEEncode, LTXVAudioVAEDecode, VAEDecodeHunyuan3D, ROCMOptimizedVAEDecode, ROCMOptimizedVAEDecodeTiled, VAEDecodeLoopKJ
[DEPRECATION WARNING] Detected import of deprecated legacy API: /scripts/ui/components/button.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /scripts/ui/components/buttonGroup.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
FETCH ComfyRegistry Data: 10/124
FETCH ComfyRegistry Data: 15/124
FETCH ComfyRegistry Data: 20/124
FETCH ComfyRegistry Data: 25/124
FETCH ComfyRegistry Data: 30/124
FETCH ComfyRegistry Data: 35/124
FETCH ComfyRegistry Data: 40/124
FETCH ComfyRegistry Data: 45/124
FETCH ComfyRegistry Data: 50/124
FETCH ComfyRegistry Data: 55/124
FETCH ComfyRegistry Data: 60/124
FETCH ComfyRegistry Data: 65/124
FETCH ComfyRegistry Data: 70/124
FETCH ComfyRegistry Data: 75/124
[CUDNNWrapper] reading config from /home/vsekar92/ComfyUI-Test/ComfyUI/custom_nodes/ovum-cudnn-wrapper/classes_to_cudnn_wrap.txt
CUDNNWrapper: regex /image.*video.*encode/i matched no classes
CUDNNWrapper: regex /wanvideo.*decode/i matched no classes
CUDNNWrapper: excluded 2 target(s) due to exclusions
CUDNNWrapper: 'WanVideoDecode' not found to wrap
CUDNNWrapper: 'WanVideoImageToVideoEncode' not found to wrap
FETCH ComfyRegistry Data: 80/124
FETCH ComfyRegistry Data: 85/124
[OVUM_CUDDN_TOGGLE] torch.backends.cudnn.enabled set to True (was False)
got prompt
Using split attention in VAE
Using split attention in VAE
VAE load device: cuda:0, offload device: cpu, dtype: torch.bfloat16
[OVUM_CUDDN_TOGGLE] torch.backends.cudnn.enabled set to False (was True)
[OVUM_CUDDN_TOGGLE] torch.backends.cudnn.enabled still set to False
Requested to load CLIPVisionModelProjection
loaded completely; 15088.80 MB usable, 1208.10 MB loaded, full load: True
reading tuning results from tunableop_results0.csv
could not open tunableop_results0.csv for reading tuning results
FETCH ComfyRegistry Data: 90/124
FETCH ComfyRegistry Data: 95/124
FETCH ComfyRegistry Data: 100/124
Requested to load WanTEModel
loaded completely; 10835.48 MB loaded, full load: True
CLIP/text encoder model load device: cuda:0, offload device: cpu, current: cuda:0, dtype: torch.float16
FETCH ComfyRegistry Data: 105/124
FETCH ComfyRegistry Data: 110/124
FETCH ComfyRegistry Data: 115/124
FETCH ComfyRegistry Data: 120/124
FETCH ComfyRegistry Data [DONE]
[ComfyUI-Manager] default cache updated: https://api.comfy.org/nodes
FETCH DATA from: https://raw.githubusercontent.com/Comfy-Org/ComfyUI-Manager/main/custom-node-list.json [DONE]
[ComfyUI-Manager] All startup tasks have been completed.
Requested to load WanVAE
loaded completely; 7293.75 MB usable, 242.03 MB loaded, full load: True
[OVUM_CUDDN_TOGGLE] torch.backends.cudnn.enabled set to True (was False)
[INFO] Detected quantized diffusion model: Wan2_2-I2V-A14B-HIGH_fp8_e5m2_scaled_KJ.safetensors
[INFO] Quantized models use specialized dtypes - preserving original precision
[LOADING] Loading diffusion model: Wan2_2-I2V-A14B-HIGH_fp8_e5m2_scaled_KJ.safetensors
[GPU] GPU: AMD Radeon RX 7900 GRE
[CONFIG] ROCm backend detected
ROCm version: 7.3.53390
[MEMORY] Memory: 0.11GB used / 15.98GB total (15.88GB free)
[LOADING] Loading model (may take 2-6 minutes for large models)...
[CONFIG] Using FP8 E5M2 precision (explicit)
Found quantization metadata version 1
Detected mixed precision quantization
Using mixed precision operations
model weight dtype torch.float8_e5m2, manual cast: torch.float16
model_type FLOW
[SUCCESS] Diffusion model loaded successfully
[MEMORY] Memory: 0.11GB used / 15.98GB total (15.88GB free)
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🚀 Starting advanced sampling: 6 steps (range: 0-3), CFG 1.0, euler (simple)
Requested to load WAN21
loaded partially; 10662.20 MB usable, 10478.37 MB loaded, 3373.46 MB offloaded, 190.05 MB buffer reserved, lowvram patches: 513
0%| | 0/3 [00:00<?, ?it/s]📊 Advanced Video KSampler: Step 1/3 (33.3%) | Starting...
33%|███████████████████████████████████████████████████████████████████▎ | 1/3 [15:18<30:36, 918.14s/it]📊 Advanced Video KSampler: Step 2/3 (66.7%) | Elapsed: 1113.6s | Remaining: ~556.8s | Avg: 556.79s/step
67%|██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████▋ | 2/3 [15:37<06:29, 389.71s/it]📊 Advanced Video KSampler: Step 3/3 (100.0%) | Elapsed: 1133.4s | Remaining: ~0.0s | Avg: 377.80s/step
100%|██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 3/3 [15:57<00:00, 319.26s/it]
✅ Advanced sampling completed
[INFO] Detected quantized diffusion model: Wan2_2-I2V-A14B-LOW_fp8_e5m2_scaled_KJ.safetensors
[INFO] Quantized models use specialized dtypes - preserving original precision
[LOADING] Loading diffusion model: Wan2_2-I2V-A14B-LOW_fp8_e5m2_scaled_KJ.safetensors
[GPU] GPU: AMD Radeon RX 7900 GRE
[CONFIG] ROCm backend detected
ROCm version: 7.3.53390
[MEMORY] Memory: 10.38GB used / 15.98GB total (5.60GB free)
[LOADING] Loading model (may take 2-6 minutes for large models)...
[CONFIG] Using FP8 E5M2 precision (explicit)
Found quantization metadata version 1
Detected mixed precision quantization
Using mixed precision operations
model weight dtype torch.float8_e5m2, manual cast: torch.float16
model_type FLOW
./comfyui.sh: line 77: 144326 Killed python3 main.py --cache-none --use-flash-attention
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