[hpc-announce] [Call For Participation] IA^3 2025: 15th SC Workshop on Irregular Applications: Architectures and Algorithms

Wed Nov 12 17:53:18 CST 2025

[Apologies for Multiple Postings]

IA^3 2025
15th Workshop on Irregular Applications: Architectures and Algorithms
In conjunction with SC25

https://urldefense.us/v3/__https://hpc.pnl.gov/IA3/__;!!G_uCfscf7eWS!b6ZqS_rTPam7mVBszexd4n3rsM4d_u3te3KI5hdZMsGgikbNYwYhi4r146_lVSFqzJQOPuknsZtINyHHGoBSLrLofF07l483cg$ 
November 16, 2025

America’s Center, Saint Louis, MO
Room 232

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Theme
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Emerging data-intensive, supercomputing applications are evolving towards a convergence of scientific simulations, data analytics, and learning algorithms. Components of these applications belong to both established and emerging fields, such as machine learning, social network analysis, bioinformatics, semantic graph databases, Computer Aided Design (CAD), and computer security. In processing massive volumes of unstructured data, components often perform many irregular, fine-grained accesses and synchronization events. Because current high-performance programming models, runtimes, and architectures rely on regular task graphs, bulk synchronous communications, and high temporal and spatial data locality to reduce latency, it is difficult to express irregular applications in current HPC programming models and scale performance on current supercomputing machines. Developing improved programming and execution models that address the problems of irregular applications is critical to solving the data challenges in large-scale science and data analytics.

This workshop explores solutions to support the efficient execution of irregular applications in the form of new features at the micro and system architecture, network, language and library, runtime, compiler, algorithm, and performance study levels.

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PROGRAM
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9:00 - 9:05 Welcome and Introduction
Giulia Guidi (Cornell University), Flavio Vella (Università di Trento), Antonino Tumeo (PNNL)

9:05 - 10:00 Invited Talk 1
Chair: Antonino Tumeo (PNNL)

Maintaining connected components for unending graph streams
Cynthia A. Phillips (Sandia National Laboratories)

10:00 - 10:30 Coffee Break

10:30 - 12:20 Paper Session 1: GPU Graph and Parallel Algorithms
Chair: Vito Giovanni Castellana (PNNL)

eIM: GPU-Accelerated Efficient Influence Maximization in Large-Scale Social Networks
Doney, Huang, Lee

Profiling Application-Specific Properties of Irregular Graph Algorithms on GPUs
Sharma, Burtscher

Generating Permutations at Scale
Green, Eaton, Tripathy, Nolet, Luitjens

Performance-Portable Symbolic Factorization through Common Graph Operation
Selvitopi, Li, Buluc

How Effective Is Matrix Reordering for Improving Performance of Sparse Matrix-Vector Multiplication? [short]
Asudeh, Mahdipour Saravani, Rastello, Sabin, Sadayappan

12:20 - 14:00 Lunch Break

14:00 - 15:00 Invited Talk 2
Chair: Antonino Tumeo (PNNL)

Communicating more—asynchronously—saves time
Rich Vuduc (Georgia Institute of Technology)

15:00 - 15:30 Coffee Break

15:30 - 16:55 Paper Session 2: Architectures and Accelerators
Chair: Ankur Limaye (PNNL)

An Optimized Generalized Multi-Color Point Implicit Solver for Intel GPUs using OneAPI ESIMD
Wassell, Zubair, Walden, Nastac, Nielsen, Ewart

Architecting Tensor Core-Based Reductions for Irregular Molecular Docking Kernels
Solis-Vasquez, Tillack, Santos-Martins, Koch, Forli

Comparing Graph Algorithm Styles on NVIDIA and AMD GPUs
VanAusdal, Burtscher

Benchmarking and Dissecting the Cerebras Wafer Scale Engine-2 Architecture  [short]
Miyajima, Fukuoka

16:55 - 17:25 Debate: Static algorithms, dynamic graphs

Moderator: Giulia Guidi (Cornell University)

Proposition: “Static graph algorithms are a solved problem — both algorithmically and architecturally. 
The current systems and algorithmic approaches are inappropriate for dynamic networks.”

Panelists: Anastasiia Butko (LBNL), Sanjukta Bhowmick (University of North Texas),  Michela Taufer (University of Tennessee, Knoxville), Albert-Jan Yzelman (Huawei)

17:25 - 17:30 Closing Remaks
Giulia Guidi (Cornell University), Flavio Vella (Università di Trento), Antonino Tumeo (PNNL)

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JOURNAL SPECIAL ISSUE
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The Journal of Parallel and Distributed Computing (JPDC) will organize a Special Issue on Irregular Applications: Architectures and Algorithms on the topics of the Workshop.
Authors of papers accepted to the Workshop will be invited to submit substantially extended versions (~30%) of their manuscripts.
The tentative submission date for the Special Issue will be around the middle of December.

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GENERAL CO-CHAIRS
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Antonino Tumeo, PNNL, antonino.tumeo at pnnl.gov
Mahantesh Halappanavar, PNNL, mahantesh.halappanavar at pnnl.gov

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TECHINICAL PROGRAM CO-CHAIRS
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Giulia Guidi, Cornel University, gg434 at cornell.edu
Flavio Vella, University of Trento, flavio.vella at unitn.it

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SPECIAL TOPIC CO-CHAIRS
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Sanjukta Bhowmick, University of North Texas, sanjukta.bhowmick at unt.edu
Marco Minutoli, PNNL, marco.minutoli at pnnl.gov

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ARTIFACT EVALUATION CHAIR
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Biagio Cosenza, University of Salerno, bcosenza at unisa.it

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INCLUSIVITY CO-CHAIRS
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Vito Giovanni Castellana, PNNL, vitogiovanni.castellana at pnnl.gov
Nicolas Bohm Agostini, PNNL, nicolas.agostini at pnnl.gov

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TECHNICAL PROGRAM COMMITTEE
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Ariful Azad, Texas A&M University, US
Michela Becchi, North Carolina State University, US
Sanjukta Bhowmick, University of North Texas, US
Martin Burtscher, Texas State University, US
Anastasiia Butko, Lawrence Berkeley National Laboratory, US
Pasqua D'Ambra, Istitute for Applied Computing, National Research Council (IAC-CNR), IT
Kaijie Fan, University of Salerno, NL
Reza Farahani, University of Klagenfurt, AT
Holger Froening, Heidelberg University, DE
Oded Green, NVIDIA, US
Kathrin Hanauer, University of Vienna, AT
Johannes Langguth, Simula Research Laboratory, NO
Jiajia Li, North Carolina State University, US
José Moreira, IBM TJ Wattson, US
Fanny Nina Paravecino, Microsoft, US
Gal Oren, Technion, Israel Institute of Technology, IL
Cynthia Phillips, Sandia National Laboratoriers, US
Jože Rožanec, Jozef Stefan Institute, SI
Kentaro Sano, RIKEN, JP
Sudip Seal, Oak Ridge National Laboratory, US
Tyler Sorensen, University of California Santa Cruz, US
Ruud van der Pas, Oracle, NL
Ana Lucia Verbanescu, University of Twente, NL
Nick Yakovets, Eindhoven University of Technology, NL
 Other members TBD