ggml-org/llama.cpp b10171

on GitHub

opencl: skip the Adreno KQ/KQV image kernels for multi-stream batches (#26189)

The Adreno KQ/KQV image1d kernels (ggml_cl_mul_mat_kq_kqv_adreno) ignore
dim 3 entirely: the sub-buffer covers only nb02*ne02 bytes and the kernel
receives no ne03/ne13/nb03/nb13 arguments. With the unified KV cache,
multi-sequence batches (e.g. llama-perplexity with its default -b 2048,
n_seq=4, or a multi-slot llama-server) present KQ/KQV as 4D tensors with
ne3 = n_stream, so every stream past the first reads the first stream's
K/V and produces garbage. Flash attention masks the bug where it is
enabled; devices where FA is declined (e.g. Adreno 740) hit it with
default settings.

Route ne03/ne13 > 1 to the general path, which handles dim 3, and honor
view_offs when creating the sub-buffers (currently always 0 for tensors
reaching this function, but the function would silently misread any
future view).

Llama-3.2-1B-Instruct Q4_0, wiki.test.raw, 8 chunks, -ngl 99:

• Adreno 740, default: PPL 1817.64 -> 15.61
• Adreno 740, -fa 0: PPL 1941.64 -> 15.61
• Adreno 840, -fa 0: PPL 1943.90 -> 15.50
• single-stream (-b 512) results unchanged (15.6090)
• test-backend-ops -o MUL_MAT on 740: identical before/after (909 OK,
  12 pre-existing q6_K failures)