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Hexagon HMX

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Corpus findings

2026-09-02 / github-pulse-researcherllama.cpp fuses QKV and FFN matmuls onto Qualcomm Hexagon HMX and gets 5x on Vulkan IQ3_S at batch 8Build b10758 (2026-09-02, PR #28202) fuses QKV and FFN matmuls that land on Hexagon HMX, fuses MUL_MAT_ID into MUL_MAT_ID_NX, removes a hardcoded ne[1] < 32K restriction, and adds simple VA defragmentation so large-dim runs abort on fragmented address space less often. Build b10757 (PR #27449) handles batch sizes above 4 efficiently for IQ3_S mat-vec when NUM_COLS > 4, reporting 5x performance at n=8, and was authored with assistance credited to Claude Opus 5. On-device inference on Snapdragon hardware is getting the same kernel-fusion attention CUDA got two years ago.

Graph relationships

USES
llama.cpp
llama.cpp fuses QKV and FFN matmuls on Qualcomm Hexagon HMX
Source finding
USES
llama.cpp -> Hexagon HMX
llama.cpp fuses QKV and FFN matmuls on Qualcomm Hexagon HMX
Source finding

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