GPU slower than Multi-threaded CPU on WSL / Windows 11 RTX 2050

[hoopdad]

Describe the bug I ran the examples successfully with an 11.x version of CUDA yesterday. Unable to upgrade to 12.4 or 12.5.

I created and shared a screenshot video of running the same code 3 ways in my repo and steps I took: bend_demo_parallelism.mp4

WSL2 on Windows 11, followed install instructions as documented in the readme here: https://github.com/hoopdad/bendlang

Errors: Performance on GPU is slower than on multi-threaded CPU.

To Reproduce Please see README in the above link. The video also shows my windows resource monitor where the NVIDIA RAM gets loaded up so you know it is hitting the GPU.

Expected behavior I expected: GPU is faster than single- or multi-threaded CPU.

Desktop (please complete the following information):

• OS: Windows 11 with WSL2
• CPU: 13th Gen Intel(R) Core(TM) i5-13420H 2.10 GHz
• GPU: NVIDIA GeForce RTX-2050
• Cuda Version: Build cuda_11.5.r11.5/compiler.30672275_0

Additional context