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cs.AR2026
Activation Concentration: Characterizing Column-Level Output Sparsity Across Diffusion Model Architectures
Dazhi Yang, Shafayat Mowla Anik, Byeong Kil Lee +1
Recent diffusion accelerators exploit activation sparsity by skipping near-zero GELU outputs, reporting 52--85% element-level sparsity. However, systolic-array hardware processes a…
cs.AR2026
Dead on Arrival: Characterizing and Protecting Against Dead-Entry TLB Misses in GPU Microarchitectures
Shafayat Mowla Anik, Yongchan Jung, Jeeho Ryoo +1
GPU workloads with large memory footprints frequently suffer from redundant L2 TLB misses in which a recently evicted translation is immediately re-walked at full page-walk cost. W…