HPU: High-Bandwidth Processing Unit for Scalable, Cost-effective LLM Inference via GPU Co-processing. - Myunghyun Rhee; Joonseop Sim; Taeyoung Ahn; Seungyong Lee; Daegun Yoon; Euiseok Kim; Kyoung Park; Youngpyo Joo; Hosik Kim (CoRR, 2025)