llama.cpp

733f57a9 - vulkan : copy strided f16 KV once on AMD so reads spread across memory channels (#27703)

vulkan : copy strided f16 KV once on AMD so reads spread across memory channels (#27703) * vulkan : copy strided f16 KV once so reads spread across memory channels Assisted-by: Claude (Opus 4.8 / Opus 5) * tests : cover the f16 KV copy to scratch Assisted-by: Claude (Opus 4.8 / Opus 5) * vulkan : gate the f16 KV scratch copy to AMD Assisted-by: Claude (Opus 4.8 / Opus 5) * vulkan : reuse the generic copy shader for the f16 KV scratch fill The f16 clause needs only a strided copy, not a dequant, so drop the dedicated shader and dispatch the existing copy pipeline instead. The copy is described in source memory order so the strided access lands on the writes, which stream, instead of the reads, which would concentrate on a few memory channels. Assisted-by: Claude (Opus 4.8 / Opus 5 / Fable 5) * vulkan : extend the strided KV scratch copy to bf16 Assisted-by: Claude Opus 5 * vulkan : clean up comments Assisted-by: Claude Opus 5 * consolidate copy shaders * disable on RDNA4 --------- Co-authored-by: Ruben Ortlam <rortlam@redhat.com>