Publications And Contributions

XIO: Toward eXplainable I/O for HPC Systems
S. Neuwirth* and H. Devarajan*, C. Wang and J. Lofstead
37th International Conference on Scalable Scientific Data Management (SSDBM 2025) (accepted for publication)
*Authors contributed equally.

Advancing HPC Performance Modeling with an Interactive, Automated and Tool-Agnostic ML-Driven Workflow
Z. Zhu, C. Wang and S. Neuwirth
37th International Conference on Scalable Scientific Data Management (SSDBM 2025) (accepted for publication)

VerifyIO: Verifying Adherence to Parallel I/O Consistency Semantics
C. Wang, Z. Zhu, K. Mohror, S. Neuwirth and M. Snir
39th IEEE International Parallel and Distributed Processing Symposium (IPDPS 2025) (accepted for publication)

Streamlining HDF5’s AI Workloads Benchmarking
D. Djebarov, R. Liem, S. Neuwirth, J.-L. Bez and S. Byna
6th Workshop on Extreme-Scale Storage and Analysis (ESSA'25), held in conjunction with IPDPS'25 (accepted for publication)

Code for Science: Bessere Forschung durch bessere Forschungssoftwarekompetenzen
S. Christ, B. Fritzsch, Y.V. Grossmann, D. Kempf, J. Linxweiler, F. Löffler, L. Riedl, J.P. Thiele, A.S. Wagner, L. Zanon, C. Assmann, D. Brömmel, R. Caspert, M. Dogan, S. Fillinger, J. Frangenberg, M. Franke, A. Frey, J. Hagenberg, C. Haupt, V. Kushnarenko, S. Neuwirth, T. Ribizel, J. Saak, A. Schieberle, K. Schima-Voigt, P. Schmidt, H. Seibold, R. Speck, M. Vleugel, A. Wellmann, P. Wieder, S. Wittke
Summary Report, Themenwoche Digitale Kompetenzen in der Wissenschaft, Volkswagen Foundation [Open Access]
DOI: https://doi.org/10.5281/zenodo.14273367

ETP4HPC SRA 6 White Paper - I/O and Storage (peer-reviewed)
S. Neuwirth and P. Deniel, J.-T. Acquaviva, M. Golasowski, M. Hennecke, A. Jackson, T. Leibovici, J. Luettgau, R. Nou
European Techonologie Platform for High Performance Computing (ETP4HPC) [Open Access]
DOI: https://doi.org/10.5281/zenodo.14605692 

High Performance Computing. ISC High Performance 2024 International Workshops
M. Weiland, S. Neuwirth, C. Kruse, T. Weinzierl (Editors)
Lecture Notes in Computer Science 15058, Springer 2025, ISBN 978-3-031-73715-2
DOI: https://doi.org/10.1007/978-3-031-73716-9

Advancing Scientific Computing through Research Software Competencies and Data-Driven HPC
S. Neuwirth
Keynote talk, Leibniz MMS Days 2025

ETP4HPC SRA 6 Update and the Path to Explainable I/O [Slides]
S. Neuwirth
Invited talk, EOFS Workshop 2025 @ JGU Mainz

ETP4HPC's SRA 6 - Strategic Research Agenda for High Performance Computing in Europe
S. Narasimhamurthy, N. Mittenzwey, F. Magugliani, M. Duranton, C. Prunty, P. Rossé-Laurent, M. Marazakis, P. Carpenter, G. Antoniu, S. Neuwirth, P. Deniel, D. Pleiter, U.-U. Haus, E. Laure, A. Wierse, T. Becker, R. Haas, M. Malms, H.-C. Hoppe, V. Bartsch, S. Dolas, O. Vysocky, M. Perez, A. Forrester, K. Michielsen, E. Suarez
Technical Report, European Techonologie Platform for High Performance Computing (ETP4HPC) [Open Access]
DOI: https://doi.org/10.5281/zenodo.14268784

Interactive and Tool-Agnostic ML-Driven Workflow for Automated HPC Performance Modeling [Poster and Extended Abstract]
Z. Zhu and S. Neuwirth
Research Poster Paper, 2024 IEEE/ACM International Conference for High Performance Computing, Networking, Storage and Analysis (SC24)
DOI: https://doi.org/10.5281/zenodo.14183540

Leveraging Portals4 Microbenchmarks to Enhance GASPI Performance on BXI Networks [Poster and Extended Abstract]
N. Bartelheimer and S. Neuwirth
Research Poster Paper, 2024 IEEE International Conference on Cluster Computing (CLUSTER)
DOI: https://doi.org/10.1109/CLUSTERWorkshops61563.2024.00046

Tarazu: An Adaptive End-to-End I/O Load Balancing Framework for Large-Scale Parallel File Systems
A. K. Paul* and S. Neuwirth*, B. Wadhwa, F. Wang, S. Oral, and A. R. Butt
ACM Transactions on Storage (TOS), Vol. 20, No. 2, Article 11 (May 2024), 42 pages [Open Access]
DOI: http://dx.doi.org/10.1145/3641885
*Authors contributed equally.

Automated Network Performance Characterization for HPC Systems [Paper]
N. Bartelheimer, Z. Zhu, and S. Neuwirth
International Journal of Networking and Computing, Vol. 14, Issue 1, pages 2-25 [Open Access]
DOI: https://doi.org/10.15803/ijnc.14.1_2

Toward Explainable I/O for HPC Systems [Slides]
S. Neuwirth
Invited talk, KerData Research Group, Inria Rennes, France, 2024

XIO: Towards eXplainable I/O using a multi-layer Monitoring Solution for HPC Systems
H. Devarajan* and S. Neuwirth*, Chen Wang, J. Lofstead
Invited talk, CHPC National Conference 2024
*Authors contributed equally.

Forschungssoftwarekompetenzen und HPC: Schlüssel zu Innovation und Effizienz [Slides]
S. Neuwirth
Impulse talk, Symposium “Code for Science oder: Bessere Forschungssoftware durch bessere Forschungssoftwarekompetenzen”, 2024

Zukunftsfähige Kompetenzen durch die Synergie von KI und HPC [Slides]
S. Neuwirth
Invited talk, GeLb-DIng Projekttreffen 2024 @ JGU Mainz

Transforming HPC with Holistic Performance Engineering and the Pursuit of Reproducibility [Slides]
S. Neuwirth
Invited talk, Scientific Computing Seminar 2024 @ RPTU Kaiserslautern-Landau

Empowering Change: A Personal Story of Breaking Barriers in HPC [Slides]
S. Neuwirth
Keynote talk, 1st Proud and Strong in Computing Conference (PSCC 2024)

Breaking Limits: Scaling HPC Performance Engineering Horizons to Maximize Potential [Slides]
S. Neuwirth
Invited talk, Minisymposium "Breaking the HPC Silos for Outstanding Results", PASC 2024 Conference

Künstliche Intelligenz und Ressourceneffizienz im Einklang [Slides]
S. Neuwirth
TOPML-Ringvorlesung „Transparenz, Datensicherheit & Co.: Umsetzbare Anforderungen an KI-Systeme?“

Exploring Data Paths in HPC Systems using the IO500 [Slides]
S. Neuwirth*, H. Devarajan*, J. Lofstead*
Expert talk, HPC I/O in the Data Center Workshop (HPC-IODC 2024), held in conjunction with ISC High Performance Conference 2024 (ISC24)
*Authors contributed equally.

Harnessing Synergy and Exploring Research Frontiers in Parallel I/O, Storage, and Networks
S. Neuwirth
Invited talk, Fraunhofer ITWM - Competence Center for HPC, Kaiserslautern

Bridging the Gap: Parallel Storage, Monitoring Tools, and the Quest for Reproducibility? [Slides]
S. Neuwirth
Invited talk, SOS26 Workshop (invitation-only workshop series on distributed supercomputing)

Navigating the Landscape: Parallel File System Research and Education in Europe and Germany [Slides]
S. Neuwirth
Invited talk, EOFS Workshop "Offene Parallele Dateisysteme: Status, Entwicklungstrends und Aspekte der Informatikausbildung"

Status Update on SRA6 Research Domain I/O and Storage [Slides]
S. Neuwirth
Invited lightning talk, ETP4HPC Conference 2024

Characterization of Large-Scale HPC Workloads With Non-Naïve I/O Roofline Modeling and Scoring [Pre-print]
Z. Zhu and S. Neuwirth
29th IEEE International Conference on Parallel and Distributed Systems (ICPADS 2023)
DOI: https://doi.org/10.1109/ICPADS60453.2023.00112

Toward Reproducible Benchmarking of PGAS and MPI Communication Schemes [Pre-print]
N. Bartelheimer and S. Neuwirth
29th IEEE International Conference on Parallel and Distributed Systems (ICPADS 2023)
DOI: https://doi.org/10.1109/ICPADS60453.2023.00268

An I/O Performance Evaluation of Varying CephFS Striping Patterns [Pre-print] [Slides]
D. Biswas, S. Neuwirth, A. K. Paul, A. R. Butt
3rd Workshop on Re-envisioning Extreme-Scale I/O for Emerging Hybrid HPC Workloads (REX-IO 2023), held in conjunction with IEEE CLUSTER 2023
DOI: https://doi.org/10.1109/CLUSTERWorkshops61457.2023.00014

Modeling The Impact of System-level Parameters on I/O Performance of HPC Applications [Pre-print] [Slides]
D. Biswas, A.K. Paul, S. Neuwirth, A. R. Butt
31st International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS 2023)
DOI: https://doi.org/10.1109/MASCOTS59514.2023.10387639

Toward the Integration of Quantum Processors into the Modular Supercomputing Architecture [Poster]
P. Döbler* and S. Neuwirth*, and Th. Lippert
Research Poster, ISC High Performance Conference 2023 (ISC23)
DOI: http://dx.doi.org/10.13140/RG.2.2.16124.51844
*Authors contributed equally.

MAWA-HPC: Modular and Automated Workload Analysis for HPC Systems [Poster]
Z. Zhu* and N. Bartelheimer* and S. Neuwirth*
Research Poster, ISC High Performance Conference 2023 (ISC23)
DOI: http://dx.doi.org/10.13140/RG.2.2.10671.92325
*Authors contributed equally.

An Empirical Roofline Model for Extreme-Scale I/O Workload Analysis [Pre-print]
Z. Zhu, N. Bartelheimer, and S. Neuwirth
4th Workshop on Extreme-Scale Storage and Analysis (ESSA'23), held in conjunction with IPDPS'23
DOI: https://doi.org/10.1109/IPDPSW59300.2023.00106

Toward a Modular Workflow for Network Performance Characterization [Pre-print]
N. Bartelheimer, Z. Zhu, and S. Neuwirth
25th Workshop on Advances in Parallel and Distributed Computational Models (APDCM'23), held in conjunction with IPDPS'23
DOI: https://doi.org/10.1109/IPDPSW59300.2023.00062

Modular Supercomputing and its Role in Europe’s Exascale Computing Strategy [Paper]
S. Neuwirth
Proceedings of Science, vol. 430 (LATTICE2022), p.245, published April 06, 2023
DOI: https://doi.org/10.22323/1.430.0245

Holistic HPC Performance Engineering and Reproducible Benchmarking: Opportunities and Challenges [Slides]
S. Neuwirth
Invited talk @ ZIH Colloquium Series, TU Dresden 

Characterizing HPC I/O Workloads through Holistic and Reproducible Performance Engineering [Slides]
S. Neuwirth
Invited seminar talk, Sandia National Laboratories 

HPC Performance Engineering im Zeitalter von Exascale-Systemen und Künstlicher Intelligenz [Slides]
S. Neuwirth
Invited talk, Gesellschaft für Informatik - Regionalgruppe Rhein-Main 

Unleashing the Potential of Exascale Scientific Research through HPC Performance Engineering
S. Neuwirth
Invited talk, 5th Annual Meeting of M3ODEL (Mainz Institute of Multiscale Modeling)

Leveraging HPC Performance Engineering to Support Exascale Scientific Discovery [Slides]
S. Neuwirth
Keynote talk, Platform for Advanced Scientific Computing (PASC’23) Conference 

Holistic Performance Engineering and Analysis: from UX to low-level Performance Data
T. Allen, J. Lofstead, S. Neuwirth
Panelist, 3rd Workshop on Performance EngineeRing, Modelling, Analysis, and VisualizatiOn STrategy (PERMAVOST 2023), held in conjunction with 32nd International Symposium on High-Performance Parallel and Distributed Computing (HPDC'23)

The Future of Open-Source Filesystems for HPC – Competition, Cooperation or Consolidation?
P. Carns, P. Jones, S. Neuwirth, Ph. Falk, C. Fan, S. Oeste, M. Hennecke
Panelist, ISC High Performance Conference 2023 (ISC'23)