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Atik: Open-Source Shared-Mesh Transformer Accelerator for RISC-V

Atik is an open-source RISC-V RocketChip accelerator that executes transformer matrix multiplication and attention on a shared fixed-point MAC mesh. It uses streaming online-softmax to avoid materializing the full score matrix and reports significant speedups over scalar BF16 reference in FireSim simulations. The design is evaluated across 137 test records with zero output mismatches, and hybrid projections show aggregate speedups for ViT, TinyBERT, and GPT-2 prefill.