Keisuke Kamahori (釜堀 恵輔; he/him)

kamahori [at] uw.edu

I'm a second-year Ph.D. student at Paul G. Allen School of Computer Science & Engineering, University of Washington, advised by Baris Kasikci. I'm broadly interested in computer systems and architecture, with a focus on systems for LLMs recently.
I also spend some time at Kotoba Technologies, where I'm building the serving system behind the world's fastest simultaneous translation app.
My Ph.D. study is generously supported by Toyota Riken Ph.D. Scholarship.

Prior to that, I received B. Sc. in Information Science from the University of Tokyo in 2023, advised by Shinya Takamaeda-Yamazaki. I also worked with James Larus at EPFL in the summer of 2022.

[Google Scholar] [ORCID] [DBLP] [Linkedin] [X]

Publications

• LiteASR: Efficient Automatic Speech Recognition with Low-Rank Approximation
  Keisuke Kamahori, Jungo Kasai, Noriyuki Kojima, Baris Kasikci
  arXiv preprint
  
• TeleRAG: Efficient Retrieval-Augmented Generation Inference with Lookahead Retrieval
  Chien-Yu Lin*, Keisuke Kamahori*, Yiyu Liu, Xiaoxiang Shi, Madhav Kashyap, Yile Gu, Rulin Shao, Zihao Ye, Kan Zhu, Stephanie Wang, Arvind Krishnamurthy, Rohan Kadekodi, Luis Ceze, Baris Kasikci
  arXiv preprint
  
• Fiddler: CPU-GPU Orchestration for Fast Inference of Mixture-of-Experts Models
  Keisuke Kamahori*, Tian Tang*, Yile Gu, Kan Zhu, Baris Kasikci
  ICLR2025 (PML4LRS @ ICLR2024)
  
• NanoFlow: Towards Optimal Large Language Model Serving Throughput
  Kan Zhu, Yilong Zhao, Liangyu Zhao, Gefei Zuo, Yile Gu, Dedong Xie, Yufei Gao, Qinyu Xu, Tian Tang, Zihao Ye, Keisuke Kamahori, Chien-Yu Lin, Stephanie Wang, Arvind Krishnamurthy, Baris Kasikci
  OSDI2025
  
• A 475 MHz FPGA Accelerator for RTL Simulation
  Sahand Kashani*, Mahyar Emami*, Keisuke Kamahori, Mohammad Sepehr Pourghannad, Ritik Raj, James R Larus
  FPGA2024
  
• Manticore: Hardware-Accelerated RTL Simulation with Static Bulk-Synchronous Parallelism
  Mahyar Emami*, Sahand Kashani*, Keisuke Kamahori, Mohammad Sepehr Pourghannad, Ritik Raj, James R Larus
  ASPLOS2024
  
• CiraaS: cloud computing with programmable logic
  Kenji Tanaka, Yuki Arikawa, Tsuyoshi Ito, Yuki Matsuda, Keisuke Kamahori, Shinya Kaji, Takeshi Sakamoto
  SIGCOMM2022 Poster
  
• Accelerating Decision Tree Ensemble with Guided Branch Approximation
  Keisuke Kamahori, Shinya Takamaeda-Yamazaki
  HEART2022