Session • SC22

DescriptionSupercomputers get faster and more complex every year. MPI, long the dominant model for distributed computation, has adapted by combining with models for intra-node parallelism (e.g. OpenMP, CUDA). These MPI+X hybrids offer performance but demand significant programmer effort to write, debug, and tune applications.

Alternatives to MPI+X are worth exploring as programmer productivity becomes a major component of the time to science. Alternatives include parallel programing languages (e.g. Chapel, Regent, Fortran 2018), general purpose libraries (e.g. Charm++, COMPSs, HPX, Legion, UPC++), and domain specific libraries (e.g. Arkouda, Dask, Spark). None are as widely used as MPI+X. So, it is hard for programmers to know which alternative models are appropriate for their application and for programming model developers to understand the opportunities for improvement.

Through discussion of specific applications, PAW-ATM brings together application experts and programming model developers to improve applications and models.

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Presentations

8:30am - 8:32am CST	PAW-ATM – Opening Remarks Presenters Karla Morris Michael Ferguson Elliott Slaughter Irene Moulitsas Bill Long Daniele Lezzi
8:32am - 10:00am CST	PAW-ATM – Survey of Technologies for Developers of Parallel Applications Presenters Daniele Lezzi Olivier Aumage Bill Long Michelle Strout
10:00am - 10:30am CST	PAW-ATM – Morning Break
10:30am - 10:52am CST	Extending OpenMP and OpenSHMEM for Efficient Heterogeneous Computing Author/Presenters Wenbin Lu Shilei Tian Tony Curtis Barbara Chapman
10:52am - 11:14am CST	Task Fusion in Distributed Runtimes Author/Presenters Shiv Sundram Alex Aiken Wonchan Lee
11:14am - 11:37am CST	Composition of Algorithmic Building Blocks in Template Task Graphs Author/Presenters Thomas Herault Joseph Schuchart Edward Valeev George Bosilca
11:37am - 12:00pm CST	Asynchronous Workload Balancing through Persistent Work-Stealing and Offloading for a Distributed Actor Model Library Author/Presenters Yakup Koray Budanaz Mario Wille Michael Bader
12:00pm - 1:30pm CST	PAW-ATM – Lunch Break
1:30pm - 2:18pm CST	PAW-ATM – Distinguished Speaker: The Convergence of Exascale Computing, Data Science, and Visualization toward Zero-Carbon Fuels for Power and Transportation Presenter Jacqueline Chen
2:18pm - 2:38pm CST	GASNet-EX RMA Communication Performance on Recent Supercomputing Systems Author/Presenters Paul H. Hargrove Dan Bonachea
2:38pm - 3:00pm CST	Design and Performance Evaluation of UCX for Tofu-D Interconnect with OpenSHMEM-UCX on Fugaku Author/Presenters Yutaka Watanabe Taisuke Boku Mitsuhisa Sato
3:00pm - 3:30pm CST	PAW-ATM – Afternoon Break
3:30pm - 5:00pm CST	PAW-ATM – Panel Discussion Moderator Anshu Dubey Panelists Damian Rouson Zhihao Jia Jacqueline Chen Ethan Gutmann Bill Reus Rosa Badia