Nemotron Cascade-2-30B-A3B / Vulkan RADV native PP512/TG128

User reports Nemotron-Cascade-2-30B-A3B at 54 t/s generation and 968 t/s prompt processing on an AMD Strix Halo 128GB system with a single Radeon 8060S iGPU. Setup is llama.cpp with Q8_0, full offload, batch 2048 and flash attention, using the RADV backend. The figures are separate llama-bench pp512 and tg128 microbenchmarks, not one end-to-end request; repetition count, context allocation and cache type are not published.