GPT OSS-120B / Vulkan RADV native PP512/TG128
on AMD Strix Halo 128GB · llama.cpp / Vulkan RADV / build unknown
Summary
User reports GPT-OSS-120B at 56 t/s generation and 596 t/s prompt processing on an AMD Strix Halo 128GB system with a single Radeon 8060S iGPU.
Setup is llama.cpp with MXFP4 and flash attention, full offload, batch 2048 and 32 threads.
The figures are separate pp512 and tg128 microbenchmarks, not one end-to-end request; the same campaign lists AMDVLK at 661 t/s prompt and 53 t/s generation.