Porting a CUDA Fast Fourier Transform (FFT) implementation to Mojo for the LeetGPU Fast Fourier Transform challenge presented an unexpected challenge: achieving bit-exact precision matching between CUDA’s sinf()/cosf() functions and their Mojo equivalents. This required PTX assembly analysis, cross-platform testing, and ultimately upgrading to Float64 precision for deterministic results. Challenge Constraints 🔗 N range: $1 \leq N \leq 262,144$ (power-of-2 FFT sizes) Data type: All values...
