Crystools error

Custom Nodes
1

Hi,

Since I changed deprecated pynvml (pip uninstall pynvml) with nvidia-ml-py (pip install nvidia-ml-py3), I have got a Crystools error

[Crystools ERROR] Could not init pynvml (NVIDIA). NVML Shared Library Not Found

NVML.dll Library is in Windows/system32
Windows/system32 is declared in environment variables path and nvml.dll is declared as NVML_DLL_PATH

Thank you for your help

Philbec44

Python version: 3.13.9
ComfyUI version: 0.3.76
ComfyUI frontend version: 1.32.10
pytorch version: 2.9.1+cu130
sage attention 2.2

nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2025 NVIDIA Corporation
Built on Wed_Aug_20_13:58:20_Pacific_Daylight_Time_2025
Cuda compilation tools, release 13.0, V13.0.88
Build cuda_13.0.r13.0/compiler.36424714_0

nvidia-smi
driver version 591.44
CUDA version 13.1

2

Hi,

I have found that Crystools was searching library in %ProgramFiles%/NVIDIA Corporation/NVSMI/

So, I created NVSMI directory which was missing and copied nvml.dll from Windows\System32. I now can see GPU & VRAM values but without the bars

3

I have erased Crystools in custom nodes then reloaded it via Comfyui Manager and it is now OK