The official source reports this update: b10871: vulkan: add dedicated iq4_xs mat-vec shader. vulkan: add dedicated iq4_xs mat-vec shader ( #28426 ) vulkan: add dedicated iq4_xs mat-vec shader Dedicated mul_mat_vec_iq4_xs for the dmmv path, replacing the generic fallback. ~+6-17% token generation on RDNA4 depending on model. Assisted-by: Pi agent with Qwen3.8 27B vulkan iq4_xs: remove dead n_it unroll branch Remove the n_it the block loop. Since n_it is a runtime value, [[unroll]] is ignored by the compiler, making both branches equivalent. Kept the simple loop matching mul_mat_vec_iq3_s.comp.
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Vulkan adds dedicated iq4_xs mat-vec shader for RDNA4, improving token generation.
A dedicated shader for matrix-vector operations is added to Vulkan, improving token generation on RDNA4.
9 Sept 20261 verified claims1 sources1 observations
This official update documents a development concerning b10871: vulkan: add dedicated iq4_xs mat-vec shader. Its practical significance depends on the scope and evidence stated by the source.
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