GPT OSS-20B-Derestricted / Vulkan RADV native PP512/TG128
on AMD Strix Halo 128GB · llama.cpp / Vulkan RADV / build unknown
Summary
User reports GPT-OSS-20B-Derestricted at 77 t/s generation and 1405 t/s prompt processing on an AMD Strix Halo 128GB system with a single Radeon 8060S iGPU.
Setup is llama.cpp with MXFP4 and full offload, batch 2048 and flash attention, using the RADV Vulkan 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.