Publications

2025

• Rethinking Analytical Processing in the GPU Era
  Bobbi Yogatama* , Yifei Yang*, Kevin Kristensen, Devesh Sarda, Abigale Kim, Adrian Cockcroft, Yu Teng, Joshua Patterson, Gregory Kimball, Wes McKinney, Weiwei Gong, Xiangyao Yu
  arXiv preprint, August 2025.
  *Equal Contribution

• Scaling your Hybrid CPU-GPU DBMS to Multiple GPUs
  Bobbi Yogatama , Weiwei Gong, Xiangyao Yu
  VLDB 2024 .
  

• Accelerating User-Defined Aggregate Function (UDAF) with Block-wide Execution and JIT Compilation on GPUs
  Bobbi Yogatama , Brandon Miller, Yunsong Wang, Graham Markall, Jacob Hemstad, Gregory Kimball, Xiangyao Yu.
  DaMoN@SIGMOD 2023.
  

• Orchestrating Data Placement and Query Execution in Heterogeneous CPU-GPU DBMS
  Bobbi Yogatama , Weiwei Gong, Xiangyao Yu
  VLDB 2022.
  

• Tile-based Lightweight Integer Compression in GPU
  Anil Shanbhag*, Bobbi Yogatama* , Xiangyao Yu, Samuel Madden
  SIGMOD 2022 .
  *Equal Contribution

• Reuse Cache for Heterogeneous CPU-GPU Systems
  Tejas Shah, Bobbi Yogatama , Kyle Roarty, Rami Dahman.
  arXiv 2021.
  

• FPGA-based Optical Character Recognition for Handwritten Mathematical Expressions
  Bobbi Yogatama , Jhonson Lee, Suksmandhira Harimurti, Trio Adiono.
  ISOCC 2018.

• ACDoctor: Air Conditioner Diagnostic Tool Using Sensor Networks
  Bobbi Yogatama , Zulfikar Yahya, Eka Nur Prasetiani, Mervin Hutabarat, Arif Sasongko.
  ISESD 2018.

• Optical Character Recognition for Handwritten Mathematical Expressions in Educational Humanoid Robots
  Jhonson Lee, Bobbi Yogatama , Hans Christian.
  ICSET 2018.

• Finite State Machine Simulator to Detect Loops for ALICE Detector Control Systems
  Bobbi Yogatama , Ombretta Pinazza.
  CERN Tech Reports 2017.

Talks

• GPU Databases -- The New Modality of Data Analytics
  Bobbi Yogatama , Xiangyao Yu
  HPTS 2024 .
  

• Enabling Multi-GPU Support in gem5
  Bobbi Yogatama , Matthew D. Sinclair, Michael M. Swift.
  3rd gem5 User's Workshop at ISCA 2020. [HTML]

Posters

• GPU Databases -- The New Modality of Database Analytics (invited)
  Bobbi Yogatama , Xiangyao Yu
  GTC 2025 .
  

• Towards Large-Scale Relational Database Analytics on GPUs (invited)
  Bobbi Yogatama , Xiangyao Yu
  GTC 2024 .