Question about wavefront occupancy in rgp.

GPUOpen-Tools / radeon_gpu_profiler

Radeon GPU Profiler (RGP) is a tool from AMD that allows for deep inspection of GPU workloads.

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Question about wavefront occupancy in rgp. #86

Closed zouwen4321 closed 1 year ago

zouwen4321 commented 1 year ago

why device configuration show wavefronts per SIMD is 16 that data of rgp collected on AMD W6800? The RDNA white paper said each SIMD have 20 wavefront entries in RDNA frontend. Is this the same conception?

chesik-amd commented 1 year ago

20 is correct for first generation RDNA GPUs (i.e. RX 5000 series). For RDNA2 (RX 6000 series), the correct number is 16.