ggml-org/llama.cpp b10587

on GitHub

vulkan : added the PAD_REFLECT_1D operation (#26586)

• vulkan : added PAD_REFLECT_1D operation

Implemented the GGML_OP_PAD_REFLECT_1D operation for the Vulkan backend

Changes:

• pad_reflect_1d.comp: implemented the GLSL compute shader with reflection logic
• vulkan-shaders-gen.cpp: register the shader for SPIR-V compilation
• ggml-vulkan.cpp: pushed constants struct, pipeline creation,
  supports_op, dispatch function, compute switch and debug validation

Tested the PAD_REFLECT_1D on Intel Iris Xe (Vulkan 1.4, Mesa 25.2.8):

Correctness:
PAD_REFLECT_1D(type=f32,ne_a=[512,34,2,1],pad_0=10,pad_1=9) = Pass
PAD_REFLECT_1D(type=f32,ne_a=[3000,384,4,1],pad_0=10,pad_1=9) = Pass
2/2 tests passed

• All test are passed

Performance:
ne_a=[512,34,2,1] -> 5.38 us/run, 24.55 GB/s
ne_a=[3000,80,1,1] -> 30.09 us/run, 59.62 GB/s
ne_a=[3000,384,4,1] -> 158.31 us/run, 54.39 GB/s

• Update ggml/src/ggml-vulkan/vulkan-shaders/pad_reflect_1d.comp

Co-authored-by: Jeff Bolz jbolz@nvidia.com

Co-authored-by: Jeff Bolz jbolz@nvidia.com