Talks

2026

Learning Efficient Sparse Encoding for High-Performance Tensor Computations

We present ReLATE, a deep reinforcement learning framework for automatically constructing an efficient sparse tensor format

Mar 4, 2026 11:35 AM — 11:55 AM Berlin, Germany

Jee Whan Choi

Slides

Learning Efficient Sparse Encoding for High-Performance Tensor Computations

We present ReLATE, a deep reinforcement learning framework for automatically constructing an efficient sparse tensor format

Mar 3, 2026 2:00 PM — 3:00 PM Erlangen, Germany

Jee Whan Choi

Slides

2024

Matrix-free Methods for Summation-by-Parts Finite Difference Operators on GPUs

We present a custom geometric multigrid preconditioned conjugate gradient method that applies summation-by-parts(SBP)-preserving …

Jun 7, 2024 11:50 AM — 12:10 PM Kyoto, Japan

Jee Whan Choi

Slides

2023

Linearized Tensor Format for Performance-Portable Sparse Tensor Computation

We demonstrate the efficiency and performance-portability of encoding sparse tensors in a linearized format

Oct 18, 2023 11:20 AM — 11:40 AM Chicago, IL

Jee Whan Choi

Slides

2020

Tensor Decomposition for Topic Modeling in AI

We discuss using high-performance tensor decomposition for topic modeling and malware detection

Feb 7, 2020 2:20 PM — 2:35 PM UCLA

Jee Whan Choi

Slides

2019

Optimizing Tensor Decomposition on HPC Systems - Challenges and Approaches

We discuss our experience in optimizing the CP and Tucker decomposition algorithms for sparse datasets on a distributed system.

Oct 31, 2019 11:00 AM — 12:00 PM Livermore, CA

Jee Whan Choi

Slides

Optimizing Tensor Decomposition on HPC Systems - Challenges and Approaches

We discuss our experience in optimizing the CP and Tucker decomposition algorithms for sparse datasets on a distributed system.

Oct 30, 2019 11:00 AM — 12:00 PM Santa Clara, CA

Jee Whan Choi

Slides

Tensor Decomposition for Malware Detection

We share our experience in using tensor decomposition for detecting malware

Sep 18, 2019 2:30 PM — 3:00 PM Santa Fe, NM

Jee Whan Choi

Slides

On optimizing distributed non-negative Tucker decomposition

We discuss our experience in optimizing the non-negative Tucker decomposition for sparse datasets on a distributed system.

Jun 27, 2019 2:30 PM — 3:00 PM Phoenix, AZ

Jee Whan Choi

Slides

Optimizing Tensor Decomposition on HPC Systems - Challenges and Approaches

We discuss our experience in optimizing the CP and Tucker decomposition algorithms for sparse datasets on a distributed system.

May 20, 2019 2:00 PM — 2:30 PM Rio de Janeiro, Brazil

Jee Whan Choi

Slides

Optimizing Tensor Decomposition on HPC Systems

We discuss our experience in optimizing the CP and Tucker decomposition algorithms for sparse datasets on a distributed system.

Mar 28, 2019 4:00 PM — 5:00 PM Suwon, Korea

Jee Whan Choi

Slides

Optimizing Tensor Decomposition on HPC Systems

We discuss our experience in optimizing the CP and Tucker decomposition algorithms for sparse datasets on a distributed system.

Mar 25, 2019 1:00 PM — 2:00 PM Seoul, Korea

Jee Whan Choi

Slides

Distributed Tucker for Sparse Tensors

We discuss our experience in optimizing the Tucker decomposition for sparse datasets on a distributed system.

Mar 1, 2019 9:45 AM — 10:05 AM Spokane, WA

Jee Whan Choi

Slides

Blocking Optimization for Sparse MTTKRP

We discuss our experience in optimizing the sparse MTTKRP kernel using varoius blocking techniques.

Jan 26, 2019 9:30 AM — 10:20 AM Cambridge, MA

Jee Whan Choi

Slides