EuroMPI Conference

IWOMP + EuroMPI 2026 at TU Wien / ASC - Austrian Scientific Computing - Oct 5-6, 2026 --> MPI Forum - Oct7-9,2026 --> IWOMP+EuroMPI - Oct 12-16, 2026 --> OpenMP F2F TU Wien --> in the center of Vienna --> in the center of Europe --> 26.585 students, 6.029 staff (fall2025), hosts ASC Vienna --> metropolitan area 2.9 million, capital of Austria At ASC, we operate the largest and fastest computing resources available in Austria – well, on a global scale I would say: small country, small supercomputers ;) Dr. Claudia Blaas-Schenner HPC Training and Education claudia.blaas-schenner@tuwien.ac.at

Ín 2026 EuroMPI + IWOMP ++ will go back to Europe 🎯

Save the Date:

🌟 EuroMPI 2026 + IWOMP 2026

🗓️ Oct 7-9,2026 in Vienna, Austria

#HPC

EuroMPI/USA 2025 - Titan arum (Amorphophallus titanum) in the University Botanical Garden @ The University of North Carolina at Charlotte

EuroMPI/USA 2025 was lucky to see a Titan arum (Amorphophallus titanum) in the University Botanical Garden - the plant booms only every 3-5 years for just a few hours 🌷

#HPC

EuroMPI/USA 2025 - Roboters on Campus @ The University of North Carolina at Charlotte

Roboters on Campus 🤖

#HPC

EuroMPI/USA 2025 - Entrance to the Student Union Building at The University of North Carolina at Charlotte

Thank you for hosting us at The University of North Carolina at Charlotte in the Student Union Building - we definitely enjoyed the location 🎓

#HPC #UNC_Charlotte

EuroMPI/USA 2025 - Proceedings are now available

It's a wrap 🎯

EuroMPI/USA 2025 is over

Thanks to all of our wonderful speakers and attendees

Safe travels home
✈️ 🚂 🚗 🚴 🏃

#HPC

EuroMPI/USA 2025 + IWOMP 2025 - group picture

Thanks for co-locating EuroMPI and IWOMP

🤝

@openmp-arb.bsky.social

Panel: Towards MPI 6.0 Bill Gropp (University of Illinois Urbana-Champaign, NCSA) Hui Zhou (Argone National Laboratory) Hugo Taboada (CEA) Tim Niklas Uhl (Karlsruhe University)

EuroMPI/USA 2025 Panel:

Towards MPI 6.0

#HPC

EuroMPI/USA 2025 - Session IV: Multi-Threading - Examining MPI and its Extensions for Asynchronous Multithreaded Communication (Jiakun Yan)

EuroMPI/USA 2025 - Session IV: Multi-Threading - Examining MPI and its Extensions for Asynchronous Multithreaded Communication (Jiakun Yan) Conclusion - VC| greatly boosts multithreaded performance. - Continuation shows modest performance benefits. - UCX and OFI shows different multithreaded efficiency, but both not ideal. - Global progress hurts when multithreading. - Continuation request brings noticeable overhead under heavily multithreading. - One VCI per thread may not be perfect: attentiveness problem. - Some level of sharing is needed. We need better VCI implementation than coarse-grained locks.

EuroMPI/USA 2025 - Session IV: Multi-Threading - MPI Finally Needs to Deal with Threads (Joseph Schuchart)

EuroMPI/USA 2025 - Session IV: Multi-Threading - MPI Finally Needs to Deal with Threads (Joseph Schuchart) Assumptions MPI Should Make 1. The application has established a happens-before relationship between two MPI procedure calls. The implementation must adhere to any ordering imposed by the application. 2. The application may not have established a happens-before relationship between two MPI procedure calls. This means that two calls to MPI may happen logically and even physically concurrent and the implementation must be able to choose an order.

EuroMPI/USA 2025
Session IV: Multi-Threading

#HPC

Damian Rouson from LBNL gave the final keynote speech at IWOMP 2025.

The last Keynote of IWOMP 2025 featured Damian Rouson giving his session on Fortran is All You Need.

Thank you Damain and all of our wonderful speakers at IWOMP 2025! See you next year at IWOMP 2026! 🎉

www.iwomp.org
#OpenMP #Fortran #HPC #SPMD #PGAS #parallel #accelerator #programming #computing

EuroMPI/USA 2025,keynote by Damien Rouson: Fortran Is All You Need Automatic Parallelization on Perlmutter CPU From: Automatically parallelizing batch inference on deep neural networks using Fiats and Fortran 2023 "do concurrent" OMP_NUM_THREADS=128 fpm run \ --example concurrent-inferences \ --runner "srun --cpu bind=cores -c 128 -n 1" \ ---network model. json

EuroMPI/USA 2025,keynote by Damien Rouson: Fortran Is All You Need Conclusions - Fortran 2023 offers native parallel programming models that -- Support execution and communication in shared or distributed memory -- Offer automatic parallelization on CPUs and GPUs -- Have been demonstrated to exhibit comparable or better performance to alternatives across a range of applications in HPC and AI. - Fortran leads in some areas and often leapfrogs in areas where it previously lagged. - Join us and leave loops behind!

EuroMPI/USA 2025,keynote by Damien Rouson: Fortran Is All You Need The Dream To Make Software Representations of Partial Differential Equations More Closely Resemble Their Textbook Counterparts... by applying differential operators to continuous mathematical abstractions supported by discrete approximations Mimetic differences defines a discrete calculus that can supports this vision Fortran 2023 can make it parallel, including automatic GPU-based acceleration

EuroMPI/USA 2025,keynote by Damien Rouson: Fortran Is All You Need Abstract Calculus Pattern In Fortran you can write code as you would write on a blackboard or in a text book!

Keynote by Damien Rouson

Fortran Is All You Need 🚀

Two feature sets in Fortran:
- multi-image execution for SPMD programming with PGAS
- 'do concurrent' for loop-level parallel and accelerator programming

In Fortran you can write code as you would write on a blackboard or in a text book.

#HPC

EuroMPI/USA 2025, best paper award, trophy

Best Paper Trophy

#HPC

EuroMPI/USA 2025, best paper award, happy winners

Congratulations to the happy winners 👏

#HPC

And the Best Paper Award for EuroMPI/USA 2025 goes to:

🌟 Hui Zhou, Kenneth Raffenetti, Mike Wilkins, Yanfei Guo und Rajeev Thakur 🌟

🌟 Implementing True MPI Sessions and Evaluating MPI Initialization Scalability 🌟

Congratulations
👏👏👏👏👏

#HPC

EuroMPI/USA 2025 - Session III: Performance On the Potential of Compression Hiding in MPI Applications (Yicheng Li) Implementing True MPI Sessions and Evaluating MPI Initialization Scalability (Hui Zhou) Performance analysis of OpenMPI on AMR applications over Slingshot-11 (Maxim Moraru)

What is more important for MPI?

Portability or Performance?

EuroMPI/USA 2025 - Session II: Language Support (C++) Layout-Agnostic MPI Abstraction for Distributed Computing in Modern C++ (Jiří Klepl) Concepts for designing modern C++ interfaces for MPI (C. Nicole Avans) Lessons from MPICH (Bill Gropp, Invited Talk)

A Brief History of MPI and C++

Expressing layouts as MPI datatypes

We don't pay anything extra

A few impressions from EuroMPI/USA 2025

Session II: Language Support (C++)

#HPC

EuroMPI/USA 2025,keynote by Bob Lucas: The evolutionary flexibility of LS-DYNA

EuroMPI_USA_2025_Bob_Lucas_old_codes.png EuroMPI/USA 2025,keynote by Bob Lucas: The evolutionary flexibility of LS-DYNA The old codes aren't going away any time soon - They're solving problems for their users -- Saving billions of dollars annually - Backward compatibility preserves decades of investments -- Including the rich set of libraries and tools they're build on - They are integrated into bigger workflows -- E.g., most LS-DYNA input decks are generated by 3rd party tools --- Cadence ANSA & Siemens Hypermesh - Generations of engineers know how to use them - In safety critical fields, regulators insist on continuity - They are moving targets, constantly evolving, and improving

EuroMPI_USA_2025_Bob_Lucas_LREM.png EuroMPI/USA 2025,keynote by Bob Lucas: The evolutionary flexibility of LS-DYNA Nested dissection reordering of Rolls-Royce Large Representative Engine Model (LREM)

EuroMPI/USA 2025,keynote by Bob Lucas: The evolutionary flexibility of LS-DYNA Concluding Remarks - There are many codes such as LS-DYNA that have stood the test of time - They do so by evolving to adapt to new requirements and computing technology - They leverage an increasingly rich ecosystem of math libraries, compilers, and tools - OpenMP and MPI are particularly important to science and engineering - They will be even more so in the future, as the pace of change accelerates

Large Computer-Aided Engineering Applications
keynote by Bob Lucas

LS-DYNA has successfully evolved for four and a half decades.

Today, LS-DYNA embodies over ten million source lines of code, mostly in Fortran, and has many thousands of users worldwide.

#HPC

EuroMPI/USA 2025 - Session I: Correctness

Verifying MPI API Usage Requirements with Contracts (Yussur Mustafa Oraji)

Review of MPI Continuations and Their Integration into PMPI Tools (Alexander Optenhöfel)

Extending the SPMD IR for RMA Models and Static Data Race Detection (Semih Burak)

EuroMPI/USA 2025 - Session I: Correctness

HPC in Health

👉 Physics-based personalized models

👉 Digital models are now replacing invasive measures

👉 Intervention response forecasting

👉 Access to leadership class HPC systems is a critical component

👉 Requires interdisciplinary advances

#HPC
@profamandarandles.bsky.social

EuroMPI/USA 2025, opening keynote by Amanda Randle: HPC in Health: Scaling Vascular Digital Twins from Millions of Heartbeats to Petabytes of Data

EuroMPI/USA 2025, opening keynote by Amanda Randle: HPC in Health: Scaling Vascular Digital Twins from Millions of Heartbeats to Petabytes of Data Digital Twin CFD: MP| & OpenMP Advances are Critical - Challenging workloads -- Not just FLOPs anymore → Memory bandwidth & data movement dominate -- Workflows: CFD + Al surrogates + real-time data - Need for Leadership Class Systems -- Generate petascale CFD data -- Process multimodal sensor + imaging data -- Train & deploy Al models in real time - Coupling Al + Physics -- Hybrid workflows: Al + CFD -- Requires heterogeneous parallelism at scale - Importance of MPI and OpenMP -- Efficient global-scale communication, dynamic workflows, in-situ analysis -- Node-level performance on GPUs & heterogeneous hardware -- Enable scalable, clinically viable digital twins HPC is essential for moving digital twins from the supercomputer to the clinic — transforming healthcare

EuroMPI/USA 2025, opening keynote by Amanda Randle: HPC in Health: Scaling Vascular Digital Twins from Millions of Heartbeats to Petabytes of Data What is needed for a vascular digital twin? 1. Patient-specific geometry 2. High-resolution simulation 3. Dynamic and continuous tracking 4. Longitudinal hemodynamic mapping

EuroMPI/USA 2025, opening keynote by Amanda Randle: HPC in Health: Scaling Vascular Digital Twins from Millions of Heartbeats to Petabytes of Data Beyond digital twins of the circulatory system Digital twins can integrate the growing data available on a per-patient basis, from genetics to immunology to neurology, to build dynamically evolving, predictive models.

HPC in Health - keynote by Amanda Randles

Healthcare today is reactive. We treat crises after they happen. Digital twins make it proactive - preventing them.

In the future, we won't be asking if you HAVE a digital twin. We'll ask HOW your digital twin helped keep you healthy.

#HPC

Welcome to EuroMPI/USA 2025 & IWOMP 2025

After the morning tutorials, EuroMPI/USA 2025 & IWOMP 2025 just had their official opening.

#HPC #MPI

The 1st joint keynote for EuroMPI/USA 2025 & IWOMP 2025 will be given by

Amanda Randles @profamandarandles.bsky.social
HPC in Health: Scaling Vascular Digital Twins from Millions of Heartbeats to Petabytes of Data

Registration is still open & remote participation is free of charge.

#HPC #AI #MPI

EuroMPI/USA 2025, Charlotte, NC, USA, 1-3 October 2025, https://eurompi.org

It's just two more days until EuroMPI/USA 2025.

This week #EuroMPI is co-located with #IWOMP and the #MPIforum in Charlotte, NC, USA.

Looking forward to amazing keynotes, checkout the program:
👉 eurompi.org/program

#HPC #AI #MPI

Today the #MPI_Forum ratified the new MPI-5.0 – now with ABI included 🚀

Join us at #ISC25 for the MPI BoF!

🗓️ June 12 | 🕑 14:15–15:15 | 📍Hall G1, 2nd floor

#MPI #HPC #AI

MPI BoF speaker Martin Schulz, short biography

MPI BoF invitation, 27 September 2024, 1:30 pm - 3:00 pm AWST, online

MPI, Quo Vadis? Come and join us for the #MPI BoF - listen and engage in a discussion about the future of #MPI 🚀

🗓️ 27 September 2024
⏰ If you are in Europe you can enjoy the #MPI BoF with your breakfast, 07:30-09:00 CEST.
🎯 Online
📍 Register here: hubs.ly/Q02QSVnw0

Keynote by Martin Schulz ‘MPI in harmony with OpenMP’

Martin Schulz delivers a phantastic #IWOMP keynote 🎯

Sunrise in Perth

Sunrise in Perth 🌅

Having #EuroMPI, #IWOMP, and the #MPIForum grouped together allows attendees to interact and share ideas and experiences 🤝

Up today: From ‘MPI+OpenMP’ to ‘MPI in harmony with OpenMP’: Developments in the MPI Standard and how they could interact with OpenMP

Pawsey quokkas

It's just two more days until EuroMPI/Australia 2024...

Today #IWOMP and #MPIForum kicked off the conference week at #PawseyCentre, with #EuroMPI starting on Wednesday.

Always on stage - the two most prominent participants 🦘 🦘

Approaching Perth

🛫 The wait is (almost) over ✈️ ✈️ ✈️ we arrived in Perth 🛬

Early bird deadline extended until Friday 9 August for IWOMP & EuroMPI 2024 conferences in Perth 23-27 September 2024.

🚀 Don't miss out! 🚀

Join us at #EuroMPI/Australia 2024 @PawseyCentre for cutting-edge discussions on #MPI featuring keynote speaker Sarah Pearce, Director of the Low Telescope of the Square Kilometer Array Observatory. 🌟🌟🌟