[GH-ISSUE #85] Windows access violation in init_devices with DynamicVRAM on RTX 5070 Ti #27

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opened 2026-10-26 22:23:47 +00:00 by bsakaguchi · 1 comment

bsakaguchi commented

2026-10-26 22:23:47 +00:00

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Originally created by @sakutosi on GitHub (Aug 8, 2026).
Original GitHub issue: https://github.com/Comfy-Org/comfy-aimdo/issues/85

Summary

With DynamicVRAM enabled, ComfyUI prints repeated Windows fatal access violations in comfy_aimdo.control.init_devices during startup on an RTX 5070 Ti.

The error still occurs with only GPU 0 selected using --cuda-device 0. Adding --disable-dynamic-vram removes the error completely.

A sanitized startup-log excerpt, environment details, dependency verification, the console traceback, and the workaround are attached.

comfy_aimdo_dynamicvram_startup_evidence_rtx5070ti.txt

Console traceback

The following traceback was printed repeatedly (8 times) during startup:

Windows fatal exception: access violation

Stack (most recent call first):
  File "D:\StabilityMatrix\Data\Packages\ComfyUI\venv\Lib\site-packages\comfy_aimdo\control.py", line 144 in init_devices
  File "D:\StabilityMatrix\Data\Packages\ComfyUI\main.py", line 256 in <module>

Workaround

Launching with the following argument removes the access violations completely:

--cuda-device 0 --disable-dynamic-vram

Originally created by @sakutosi on GitHub (Aug 8, 2026). Original GitHub issue: https://github.com/Comfy-Org/comfy-aimdo/issues/85 ## Summary With DynamicVRAM enabled, ComfyUI prints repeated Windows fatal access violations in `comfy_aimdo.control.init_devices` during startup on an RTX 5070 Ti. The error still occurs with only GPU 0 selected using `--cuda-device 0`. Adding `--disable-dynamic-vram` removes the error completely. A sanitized startup-log excerpt, environment details, dependency verification, the console traceback, and the workaround are attached. [comfy_aimdo_dynamicvram_startup_evidence_rtx5070ti.txt](https://github.com/user-attachments/files/30852757/comfy_aimdo_dynamicvram_startup_evidence_rtx5070ti.txt) ## Console traceback The following traceback was printed repeatedly (8 times) during startup: ```text Windows fatal exception: access violation Stack (most recent call first): File "D:\StabilityMatrix\Data\Packages\ComfyUI\venv\Lib\site-packages\comfy_aimdo\control.py", line 144 in init_devices File "D:\StabilityMatrix\Data\Packages\ComfyUI\main.py", line 256 in <module> ``` ## Workaround Launching with the following argument removes the access violations completely: ```text --cuda-device 0 --disable-dynamic-vram ```

bsakaguchi closed this issue

2026-10-26 22:23:47 +00:00

bsakaguchi commented

2026-10-26 22:23:48 +00:00

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@coderabbitai[bot] commented on GitHub (Aug 8, 2026):

🔗 Related PRs

Comfy-Org/comfy-aimdo#72 - Added support for MCDM and GPU-PV through the DXCore API [open]

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@coderabbitai[bot] commented on GitHub (Aug 8, 2026):  <details> <summary>🔗 Related PRs</summary> Comfy-Org/comfy-aimdo#72 - Added support for MCDM and GPU-PV through the DXCore API [open] </details> --- <details> <summary> 🧪 Issue enrichment is currently in open beta.</summary> You can configure auto-planning by selecting labels in the issue_enrichment configuration. To disable automatic issue enrichment, add the following to your `.coderabbit.yaml`: ```yaml issue_enrichment: auto_enrich: enabled: false ``` </details> 💬 Have feedback or questions? Drop into our [discord](https://discord.gg/coderabbit)!

bsakaguchi referenced this issue

2026-10-26 22:24:18 +00:00

[PR #27] fix: implement ELF GOT patching for CUDA hooks on Linux/WSL2 #70