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kferjaoui
ac96d1f688
- Stencil arithmetic and shared memory use float (COMPUTE_TYPE alias). - Pedestal accumulation stays double to preserve variance accuracy. Notes: - On RTX 4090, FP32 throughput is ~64× higher than FP64, so moving stencil math to float improves performance. - Using float also avoids shared memory bank conflicts: stride-18 maps to distinct banks for 32-bit values, but caused conflicts with 64-bit.