I recently released
LeetGPU.com, an online CUDA playground that allows anyone to write and execute CUDA code without a GPU and for free.
We use GPU emulation on CPUs and use Accel-Sim for our cycle-accurate mode. I wanted to thank the Accel-Sim team for the amazing work you did. We're standing on the shoulder of giants, so thank you so much. We have cited Accel-Sim as well in the help page at
leetgpu.com/playground