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EuroMPI Conference @eurompiconf.bsky.social · 07/10/2026

Opening by the general co-chairs of EuroMPI & IWOMP 2026.

General co-chairs of EuroMPI & IWOMP 2026:
Christoph Niethammer (HLRS)
Claudia Blaas-Schenner (ASC / TU Wien)
Michael Klemm (AMD, OpenMP ARB)

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EuroMPI Conference @eurompiconf.bsky.social · 07/10/2026

Kicking of EuroMPI & IWOMP 2026 at TU Wien.

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Claudia Blaas-Schenner @claudiablaas.bsky.social · 06/10/2026

We had a successful and really productive #MPI_Forum meeting the past two days at @tuwien.at #MPI #HPC

MPI Forum members at the October 2026 meeting.

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EuroMPI Conference @eurompiconf.bsky.social · 05/10/2026

It's just two more days until EuroMPI & IWOMP 2026 This week #EuroMPI is co-located with #IWOMP and the #MPIforum Looking forward to amazing keynotes, checkout the program 👉 eurompi.org/program EuroMPI allows for free remote attendance 👉 eurompi.org/register #HPC #AI #MPI #OpenMP

EuroMPI & IWOMP 2026
TU Wien, Vienna, Austria
7–9 October 2026
https://eurompi.org

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EuroMPI Conference @eurompiconf.bsky.social · 04/10/2026

This week we'll have three events at one location: 🌟 MPI Forum (5-6 Oct) mpi-forum.org/meetings/202... 🌟 EuroMPI & IWOMP 2026 (7–9 Oct) eurompi.org/program iwomp.org/2026-program 🎯 TU Wien, Vienna, Austria ®️ Resistration open! #HPC #MPI #OpenMP @openmp-arb.bsky.social @asc.ac.at @tuwien.at

Three events at one location:

MPI Forum (5-6 October 2026)
EuroMPI & IWOMP 2026 (7-9 October 2026)

at TU Wien, Vienna, Austria

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EuroMPI Conference @eurompiconf.bsky.social · 07/08/2026

Join us for two iconic meetings in HPC – co-located in Vienna! 🌟 EuroMPI & IWOMP 2026 🎯 TU Wien, Vienna, Austria 🗓️ 7–9 October 2026 📍 early bird prices available until 14 August 2026 🔗 eurompi.org 🔗 iwomp.org #HPC #MPI #OpenMP @openmp-arb.bsky.social @asc.ac.at @tuwien.at

EuroMPI (https://eurompi.org/) & IWOMP 2026 (https://iwomp.org/)
7-9 October 2026, TU Wien, Vienna, Austria
early bird prices available until 14 August 2026

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EuroMPI Conference @eurompiconf.bsky.social · 05/10/2025

Ín 2026 EuroMPI + IWOMP ++ will go back to Europe 🎯 Save the Date: 🌟 EuroMPI 2026 + IWOMP 2026 🗓️ Oct 7-9,2026 in Vienna, Austria #HPC

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

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EuroMPI Conference @eurompiconf.bsky.social · 05/10/2025

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

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EuroMPI Conference @eurompiconf.bsky.social · 05/10/2025

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 - Entrance to the Student Union Building at The University of North Carolina at Charlotte

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EuroMPI Conference @eurompiconf.bsky.social · 04/10/2025

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 - Proceedings are now available

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EuroMPI Conference @eurompiconf.bsky.social · 04/10/2025

EuroMPI/USA 2025 Panel: Towards MPI 6.0 #HPC

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)

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EuroMPI Conference @eurompiconf.bsky.social · 04/10/2025

EuroMPI/USA 2025 Session IV: Multi-Threading #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.

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OpenMP ARB @openmp-arb.bsky.social · 03/10/2025

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

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

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EuroMPI Conference @eurompiconf.bsky.social · 04/10/2025

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

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

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!

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EuroMPI Conference @eurompiconf.bsky.social · 04/10/2025

Congratulations to the happy winners 👏 #HPC

EuroMPI/USA 2025, best paper award, happy winners

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EuroMPI Conference @eurompiconf.bsky.social · 03/10/2025

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

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EuroMPI Conference @eurompiconf.bsky.social · 03/10/2025

What is more important for MPI? Portability or Performance?

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)

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EuroMPI Conference @eurompiconf.bsky.social · 03/10/2025

A few impressions from EuroMPI/USA 2025 Session II: Language Support (C++) #HPC

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)

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EuroMPI Conference @eurompiconf.bsky.social · 02/10/2025

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,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

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EuroMPI Conference @eurompiconf.bsky.social · 01/10/2025

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)

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EuroMPI Conference @eurompiconf.bsky.social · 01/10/2025

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

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EuroMPI Conference @eurompiconf.bsky.social · 01/10/2025

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

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

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EuroMPI Conference @eurompiconf.bsky.social · 01/10/2025

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

Welcome to EuroMPI/USA 2025 & IWOMP 2025

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EuroMPI Conference @eurompiconf.bsky.social · 29/09/2025

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

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EuroMPI Conference @eurompiconf.bsky.social · 29/09/2025

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

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

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Claudia Blaas-Schenner @claudiablaas.bsky.social · 05/06/2025

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: A Message-Passing Interface Standard, Version 5.0, Message Passing Interface Forum, June 5, 2025

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EuroMPI Conference @eurompiconf.bsky.social · 24/09/2024

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

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

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EuroMPI Conference @eurompiconf.bsky.social · 24/09/2024

Martin Schulz delivers a phantastic #IWOMP keynote 🎯

Keynote by Martin Schulz ‘MPI in harmony with OpenMP’

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EuroMPI Conference @eurompiconf.bsky.social · 24/09/2024

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

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EuroMPI Conference @eurompiconf.bsky.social · 23/09/2024

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 🦘 🦘

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EuroMPI Conference @eurompiconf.bsky.social · 23/09/2024

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

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EuroMPI Conference @eurompiconf.bsky.social · 31/07/2024

🚀 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. 🌟🌟🌟

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

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EuroMPI Conference @eurompiconf.bsky.social · 31/07/2024

📢 EuroMPI/Australia 2024 🗓️ 25–27 September 2024 📍 early bird prices available up to: Friday 9 August 4PM AEST (6AM GMT) ℹ️ eurompi.org

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EuroMPI Conference @eurompiconf.bsky.social · 31/07/2024

📢 EuroMPI/Australia 2024 📢 Call for posters (and short papers/talks) 📍 submission deadline 2 August 2024 AoE ℹ️ eurompi.org Showcase innovative contributions related to MPI - including MPI use cases, possible limitations, comparison with alternative approaches, ...

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EuroMPI Conference @eurompiconf.bsky.social · 12/07/2024

📢 Registration is open for 📢 EuroMPI/Australia 2024 🗓️ 25–27 September 2024 📍 early bird prices before 31 July 2024 📍 normal prices after 1 August 2024 ℹ️ eurompi.org

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EuroMPI Conference @eurompiconf.bsky.social · 24/06/2024

📢 Calling all users at #PawseyCentre Are you using MPI to drive scientific discovery? Submit a poster for MPI in applications, showcasing its potential to enable new research in various domain sciences 🚀

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EuroMPI Conference @eurompiconf.bsky.social · 24/06/2024

We encourage submissions from users, developers, and researchers from all areas of message-passing parallel programming: use cases, programmability, dynamic processes, tools, models, and monitoring, ...

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EuroMPI Conference @eurompiconf.bsky.social · 24/06/2024

📢 Call for Posters and Short Papers 📢 EuroMPI/Australia 2024 📍 Submission deadline 📍 2 August 2024 ℹ️ eurompi.org

EuroMPI/Australia 2024 - Let's talk about the Message-Passing Interface - MPI

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EuroMPI Conference @eurompiconf.bsky.social · 10/05/2024

📢 EuroMPI/Australia 2024 - Call for Papers 📍 Submission deadline (extended) 📍 7 June 2024 ℹ️ eurompi.org

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EuroMPI Conference @eurompiconf.bsky.social · 05/05/2024

Australia, we are coming 🚀 EuroMPI/Australia 2024 will take place on 25–27 September 2024 at #PawseyCentre in Perth, Australia. #EuroMPI will be co-located with #IWOMP and the #MPIforum 🤝 ℹ️ eurompi.org

Perth skyline taken from http://tiny.cc/PerthSkyline2

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EuroMPI Conference @eurompiconf.bsky.social · 05/05/2024

1991, Oberlech, Austria: MPI was conceived 1992, Apr, Rice University, USA: stakeholder workshop = "Birth of MPI" 1992, Nov, at SC92: a committee was formed 1993, Jan, Dallas, USA, MPI Forum began its work 1994, May 5, MPI-1.0 - Initial release of the MPI Standard

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EuroMPI Conference @eurompiconf.bsky.social · 05/05/2024

You all know, HPC and MPI could not be without each other... Today 30 years ago MPI-1.0 was released 🥳 And in the very same year the first EuroMPI Conference took place 🎉

30 years - MPI-1.0 - May 5, 1994 - Initial Release

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