Float64

Trust but Verify: Validating GPU Float32 Math on the CPU

Our post-dispatch spot-check verification selects 16 elements from the GPU's Float32 output, re-computes them in Float64 on the CPU, and compares. If relative error exceeds the tier-specific tolerance (10^-4 for medium sensitivity, 10^-6 for high sensitivity), the engine discards the GPU result and re-executes on CPU. Speed first, correctness guaranteed.