10th Workshop on Irregular Applications: Architectures and Algorithms

November 11, 2020
Virtual Workshop
In conjunction with SC20


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Time (EST)Event
10:00~10:10Welcome and Introduction (Live)
Antonino Tumeo (PNNL), John Feo (PNNL), Vito Giovanni Castellana (PNNL)
10:10~10:40Keynote 1 - Research Challenges in Compiler Technology for Sparse Tensors (Live)
Prof. Mary Hall (University of Utah) [Slides]
10:40~10:50Keynote 1 Live Q/A  - Moderator: John Feo (PNNL)
Prof. Mary Hall (University of Utah)
11:00~12:10Session 1  (Pre-recorded videos)

Accelerating Domain Propagation: an Efficient GPU-Parallel Algorithm over Sparse Matrices
Boro Sofranac (Berlin Institute of Technology), Ambros Gleixner (Berlin Institute of Technology), Sebastian Pokutta (Berlin Institute of Technology)

Parallelizing Irregular Computations for Molecular Docking
Leonardo Solis-Vasquez (Technical University Darmstadt), Diogo Santos-Martins (Scripps Research Institute), Andreas F. Tillack (Scripps Research Institute), Andreas Koch (Technical University Darmstadt), Jérôme Eberhardt (Scripps Research Institute), Stefano Forli (Scripps Research Institute)

Reducing Queuing Impact in Irregular Data Streaming Applications
Stephen W. Timcheck (Washington University in St. Louis), Jeremy D. Buhler (Washington University in St. Louis)

Supporting Irregularity in Throughput-Oriented Computing by SIMT-SIMD Integration (short)
Daniel Thuerck (NEC Laboratories Europe)
12:10~12:30Session 1 Live Q/A - Moderator: Antonino Tumeo (PNNL)
Boro Sofranac (Berlin Institute of Technology), Leonardo Solis-Vasquez (Technical University Darmstadt), Stephen W. Timcheck (Washington University in St. Louis), Daniel Thuerck (NEC Laboratories Europe)
12:40~13:40Live Panel - Moderator: Vito Giovanni Castellana (PNNL)
Scott Beamer (University of California, Santa Cruz) [Slides], Michela Becchi (North Carolina State University) [Slides], Angela Bonifati (Lyon 1 University) [Slides], Roger Pearce (Lawrence Livermore National Laboratory), Anil Vullikanti (University of Virginia) [Slides]
13:40~14:30Lunch Break
14:30~15:00Keynote 2: Memory Performance Optimization (Pre-recorded video)
Dr. Nuwan Jayasena (AMD Research) [Slides]
15:00-15:10Keynote 2 Live Q/A - Moderator: Marco Minutoli (PNNL)
Dr. Nuwan Jayasena
15:20~16:30Session 2 (Pre-recorded videos)

DistDGL: Distributed Graph Neural Network Training for Billion-Scale Graphs
Da Zheng (Amazon), Chao Ma (Amazon), Minjie Wang (Amazon), Jinjing Zhou (Amazon), Qidong Su (Amazon), Xiang Song (Amazon), Quan Gan (Amazon), Zheng Zhang (Amazon), George Karypis (Amazon)

Labeled Triangle Indexing for Efficiency Gains in Distributed Interactive Subgraph Search
Tahsin Reza (Lawrence Livermore National Laboratory), Matei Ripeanu (University of British Columbia), Geoffrey Sanders (Lawrence Livermore National Laboratory), Roger Pearce (Lawrence Livermore National Laboratory)

Distributed Memory Graph Coloring Algorithms for Multiple GPUs
Ian Bogle (Rensselaer Polytechnic Institute), Erik Boman (Sandia National Laboratories), Karen Devine (Sandia National Laboratories), Sivasankaran Rajamanickam (Sandia National Laboratories), George Slota (Rensselaer Polytechnic Institute)

Performance Evaluation of the Vectorizable Binary Search Algorithms on an FPGA Platform (short)
Zheming Jin (Argonne National Laboratory), Hal Finkel (Argonne National Laboratory)
16:30-16:50Session 2 Live Q/A - Moderator: Antonino Tumeo (PNNL)
Da Zheng (Amazon), Tahsin Reza (Lawrence Livermore National Laboratory), Ian Bogle (Rensselaer Polytechnic Institute), Zheming Jin (Argonne National Laboratory)
16:50-17:00Thank you and closing
Antonino Tumeo (PNNL), John Feo (PNNL), Vito Giovanni Castellana (PNNL)

17:00-18:00Workshop happy hour - (outside SC20 platform)
(Meeting id: 160 122 6581 - Password: provided to Workshop attendees in the SC20 platform discussion)

Special Issue

Authors of papers accepted to the workshop will also be invited to submit extended version of their papers to a Special Issue of the journal of Parallel Computing (ParCO) on Hardware/Software Co-design for Sparse and Irregular Applications.

Submissions for the special issue with open December 1, 2020 and will close on March 1, 2021.

For more information on this special issue, please visit the special issue page and/or contact the guest co-editors, Flavio Vella ( and Antonino Tumeo (

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