IWOMP 2023
IWOMP 2023 Program
The following OpenMP events were hosted at the University of Bristol.
- EuroMPI – 11-13 Sept. See eurompi23.github.io for program details
- IWOMP – 12-15 Sept. See program below
- MPI Forum Meeting – 14-15 Sept. See www.mpi-forum.org for details
IWOMP 2023 Proceedings
Free access for conference attendees will be granted for 4 weeks until October 6, 2023. Attendees should use the password provided at the conference to access the IWOMP 2023 Proceedings.
Tuesday 12 September
| 08:30 | Registration and Refreshments |
| 09:00 | Tutorial: Hands-On Using OpenMP Offload (Part 1) Tom Deakin and Wei-Chen (Tom) Lin, University of Bristol. View Presentation Slides (Parts 1-4) |
| 10:30 | Morning Break & Networking |
| 11:00 | Tutorial: Hands-On Using OpenMP Offload (Part 2) |
| 12:30 | Lunch & Networking |
| 13:30 | Tutorial: Hands-On Using OpenMP Offload (Part 3) |
| 15:00 | Afternoon Break & Networking |
| 13:30 | Tutorial: Hands-On Using OpenMP Offload (Part 4) |
| 17:00 | Close |
Wednesday 13 September
| 08:30 | Registration and Refreshments |
| 09:00 | Tutorial: Advanced OpenMP (Part 1) View Presentation Slides (Parts 1 and 2) |
| 10:30 | Morning Break & Networking |
| 11:00 | Tutorial: Advanced OpenMP (Part 2) |
| 12:30 | Lunch & Networking |
| 13:30 | Welcome and Introductions |
| 14:00: | Keynote Presentation: Joint EuroMPI/IWOMP Professor David May. Emeritus Professor, Department of Computer Science at the University of Bristol and a Fellow of The Royal Society. Wikipedia biography |
| 15:00 | Afternoon Break & Networking |
| Papers I: | OpenMP Offload Experiences Session Chair: Simon McIntosh-Smith |
| 15:30 | OpenMP Target Offload Utilizing GPU Shared Memory Mathias Gammelmark, Anton Rydahl and Sven Karlsson [#07] |
| 16:00 | Improving a Multigrid Poisson Solver with Peer-to-Peer Communication and Task Dependencies Mathias Gammelmark, Anton Rydahl and Sven Karlsson. [#11] |
| 16:30 | The Kokkos OpenMPTarget Backend: Implementation and Lessons Learned Stephen Olivier, Rahulkumar Gayatri, Christian Trott, Johannes Doerfert, Jan Ciesko and Damien Lebrun-Grandie. [#13] |
| 17:00 | Close |
| 19:00 | Conference Dinner Joint dinner for attendees of IWOMP, EuroMPI and MPI Forum Attendees. See Travel Information for location. |
Thursday 14 September
| 8:30 | Refreshments |
| 09:00 | Welcome and Introduction |
| 09:15 | Invited Talk: El Capitan: The First NNSA Exascale System Bronis R. de Supinski, Lawrence Livermore National Laboratory (LLNL) View AbstractLivermore Computing (LC), Lawrence Livermore National Laboratory’s (LLNL’s) supercomputing center, and HPE are deploying the first US exascale system focused on national security. This talk will provide an overview of the preparations for LC’s first exascale system, as well as details of its system architecture. Throughout, the talk will explore considerations for energy efficiency in large-scale systems. View BiographyAs Chief Technology Officer (CTO) for Livermore Computing (LC) at Lawrence Livermore National Laboratory (LLNL), Bronis R. de Supinski formulates LLNL’s large-scale computing strategy and oversees its implementation. He frequently interacts with supercomputing leaders and oversees many collaborations with industry and academia. He has served as the Chair of the OpenMP Language Committee since 2009. In addition to his work with LLNL, Bronis is also a Professor of Exascale Computing at Queen’s University of Belfast. He is a Fellow of the ACM and the IEEE. |
| 10:30 | Morning Break & Networking |
| Papers II: | OpenMP Infrastructure and Evaluation Session Chair: Chunhua Liao |
| 11:00 | Improving Simulations of Task-Based Applications on Complex NUMA Architectures Samuel Thibault, Idriss Daoudi, Thierry Gautier and Swann Perarnau. [#08] |
| 11:30 | Experimental Characterization of OpenMP Offloading Memory Operations and Unified Shared Memory Support Wael Elwasif. [#19] |
| 12:00 | OpenMP Reverse Offloading Using Shared Memory Remote Procedure Calls Jonathan Chesterfield and Joseph Huber. [#12] |
| 12:30 | Lunch & Networking |
| Papers III: | Tasking Extensions Session Chair: Stephen Olivier |
| 13:30 | How to Efficiently Parallelize Irregular DOACROSS Loops Using Fine Granularity and OpenMP Tasks: The SPEC mcf Case Juan Salamanca and Alexandro Baldassin. [#16] |
| 14:00 | Introducing Moldable Task in OpenMP Pierre-Etienne Polet, Ramy Fantar and Thierry Gautier . [#14] |
| 14:30 | Suspending OpenMP Tasks on Asynchronous Events: Extending the Taskwait Construct Maël Martin, Romain Pereira, Adrien Roussel, Patrick Carribault and Thierry Gautier. [#03] |
| 15:00 | Afternoon Break & Networking |
| Implementer Updates Session Chair: Tom Lin |
|
| 15:30 | GCC – Andrew Stubbs, Siemens |
| 15:55 | clang – Johannes Doerfert, LLVN |
| 16:20 | AMD Compiler for CPU and GPU – Greg Rodgers, AMD |
| 16:45 | Closing Remarks |
| 17:00 | Close |
Friday 15 September
| 08:30 | Refreshments |
| 09:00 | Welcome and Introduction |
| 09:15 | Invited Talk: Having it all: Can software be portable, performant and productive? Dr Chris Maynard, Met Office. View AbstractWeather and climate models simulate complex, multi-scale physics. They can deliver substantial value for society utilising their predictive power. However, It can take a decade or more to develop a new model. Moreover, computer architectures and the programming models used to develop the software have evolved on a much shorter timescale and become more complex. How can large science applications achieve the three P’s? In this presentation the Domain Specific Language (DSL) approach being adopted by the Met Office in developing its next generation model, LFRic, will be discussed. How OpenMP is used to on modern CPUs and how it being employed to exploit the computational power of GPUs described. To conclude, some of the implications of the use of DSLs for parallelism, for general purpose languages and programming model specifications such as OpenMP will be considered. View BiographyDr Chris Maynard joined the Met Office in 2012 as a senior scientific software engineer. He was promoted to expert in 2013 and has led the software development of the Met Office next generation model, LFRic. Prior to 2012, at the Edinburgh Parallel Computing Centre (EPCC) he developed and optimised scientific software for supercomputers in diverse scientific fields. He obtained his PhD in 1998 from the University of Edinburgh in theoretical particle physics. His research interests include performance optimisation, parallel programming models, languages and algorithms and from 2018 until 2023 he was jointly Associate Professor in Computer Science at the University of Reading. Since August 2022 Dr Maynard has been a Met Office fellow and leads the performance optimisation of the next generation modelling system, Momentum. |
| 10:30 | Morning Break & Networking |
| Papers IV: | Beyond Explicit GPU Support Session Chair: Tom Scogland |
| 11:00 | Multipurpose Cacheing to accelerate OpenMP Target Regions on FPGAs Julian Brandner, Florian Mayer and Michael Philippsen. [#06] |
| 11:30 | Generalizing Hierarchical Parallelism Michael Kruse. [#05] |
| 12:00 | Exploring the Limits of Generic Code Execution on GPUs via Direct (OpenMP) Offload Johannes Doerfert, Shilei Tian and Barbara Chapman. [#01] |
| 12:30 | Lunch & Networking |
| Papers V: | OpenMP and AI Session Chair: Johannes Doerfert |
| 13:30 | OpenMP Advisor: A Compiler Tool for Heterogeneous Architectures Rolando Enriquez, Alok Mishra, Abid M. Malik, Meifeng Lin and Barbara Chapman. [#02] |
| 14:00 | Towards Effective Language Model Application in High-Performance Computing Chunhua Liao, Le Chen, Pei-Hung Lin, Tristan Vanderbruggen, Murali Emani and Bronis R. de Supinski. [#18] |
| 14:30 | Advising OpenMP Parallelization via a Graph-Based Approach with Transformers Tal Kadosh, Gal Oren, Nadav Schneider, Niranjan Hasabnis, Timothy Mattson and Yuval Pinter. [#04] |
| 15:00 | Close |
Tim Mattson is a parallel programmer obsessed with every variety of science (Ph.D. Chemistry, UCSC, 1985). He is a senior principal engineer in Intel’s parallel computing lab.Tim has been with Intel since 1993 and has worked with brilliant people on great projects including: (1) the first TFLOP computer (ASCI Red), (2) MPI, OpenMP and OpenCL, (3) two different research processors (Intel’s TFLOP chip and the 48 core SCC), (4) Data management systems (Polystore systems and Array-based storage engines), and (5) the GraphBLAS API for expressing graph algorithms as sparse linear algebra.Tim is passionate about teaching. He’s been teaching OpenMP longer than anyone on the planet with OpenMP tutorials at every SC’XY conference but one since 1998. He has published five books on different aspects of parallel computing, the latest (Published November 2019) titled “The OpenMP Common Core: making OpenMP Simple Again”.
Dr. Michael Klemm is part of the Datacenter Ecosystem Engineering
Dr. Christian Terboven is a senior scientist and leads the HPC group at RWTH Aachen University. His research interests center around Parallel Programming and related Software Engineering aspects. Dr. Terboven has been involved in the Analysis, Tuning and Parallelization of several large-scale simulation codes for various architectures. He is responsible for several research projects in the area of programming models and approaches to improve the productivity and efficiency of modern HPC systems.
Oscar Hernandez received a Phd in Computer Science from the University of Houston. He is a senior staff member of the Computer Science Research (CSR) Group, which supports the Programming Environment and Tools for the Oak Ridge Leadership Computing Facility (OLCF). He represents ORNL in many specifications such as OpenACC, OpenMP, and benchmarking bodies SPEC/HPG. He is currently part of the SOLLVE ECP team and is the application liaison for the project. At ORNL he also works closely with application teams including the CAAR and INCITE efforts and constantly interacts with them to address their programming model and tools needs via HPC software ecosystems. He is currently working on the programming environment for Summit and works very closely with the vendors to track the evolution of the next-generation programming models. He has worked on many projects funded by DOE, DoD, NSF, and Industrial Partners in the Oil & Gas industry.
Thomas R. W. Scogland received his PhD degree in computer science from Virginia Tech in 2014. He is a computer scientist in the Center for Applied Scientific Computing at Lawrence Livermore National Laboratory. His research interests include parallel programming models, heterogeneous computing and resource management at scale. He serves on the OpenMP Language Committee, the WG14-C and WG21-C++ committees, and as co-chair of the Green500.
Speaker Profile: Jack Dongarra holds an appointment at the University of Tennessee, Oak Ridge National Laboratory, and the University of Manchester. He specializes in numerical algorithms in linear algebra, parallel computing, use of advanced-computer architectures, programming methodology, and tools for parallel computers. He was awarded the IEEE Sid Fernbach Award in 2004;
Speaker Profile: Eric Stotzer (Ph.D. University of Houston, 2010) is a Fellow and Director of Compiler Research at Mythic. He is currently working on developing new programming models for mixed-signal AI inference accelerators. Eric was previously with Texas Instruments for 31 years where he was a Distinguished Member Technical Staff. Over the years, he has worked on compilers and tools for micro-controllers and digital signal processors as well as hardware/software co-design efforts for new processor architectures. Eric was the TI representative on the OpenMP Architecture Review Board and co-chair of the OpenMP accelerator subcommittee. Eric is a co-author of 
Speaker Profile:
