Some of my work

Publications

• Mladen Ivkovic, Abouzied M. A.Nasar, Tobias Weinzierl, Matthieu Schaller, Benedict D. Rogers, Georgios Fourtakas, Scott T. Kay,
  Memory Layouts for GPU-Data Transfer Buffering in SPH
  Presented at PPAM Conference 2026

• Pawel K. Radtke, Cristian Barrera-Hinojosa, Mladen Ivkovic, Tobias Weinzierl,
  An Extension of C++ with Memory-Centric Specifications for HPC to Reduce Memory Footprints and Streamline MPI Development
  ACM Transactions on Mathematical Software, Volume 52, Issue 2, Article No.: 9, Pages 1 - 53
  doi:10.1145/3799887

• Tsang Keung Chan, Alexander J Richings, Tom Theuns, Yuankang Liu, Matthieu Schaller, Mladen Ivkovic,
  Sparcs – combining radiation hydrodynamics with non-equilibrium metal chemistry in the Swift astrophysical code
  Monthly Notices of the Royal Astronomical Society, Volume 546, Issue 2, February 2026, stag004
  doi:10.1093/mnras/stag004

• Abouzied M A Nasar, Benedict D Rogers, Georgios Fourtakas, Mladen Ivkovic, Tobias Weinzierl, Scott T Kay, Matthieu Schaller,
  Task-parallelism in SWIFT for heterogeneous compute architectures
  RAS Techniques and Instruments, Volume 5, 2026, rzag008
  doi:10.1093/rasti/rzag008

• Matthieu Schaller, Josh Borrow, Peter W Draper, Mladen Ivkovic, Stuart McAlpine, Bert Vandenbroucke, Yannick Bahé, Evgenii Chaikin, Aidan B G Chalk, Tsang Keung Chan, Camila Correa, Marcel van Daalen, Willem Elbers, Pedro Gonnet, Loïc Hausammann, John Helly, Filip Huško, Jacob A Kegerreis, Folkert S J Nobels, Sylvia Ploeckinger, Yves Revaz, William J Roper, Sergio Ruiz-Bonilla, Thomas D Sandnes, Yolan Uyttenhove, James S Willis, Zhen Xiang,
  Swift: a modern highly parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications,
  Monthly Notices of the Royal Astronomical Society, Volume 530, Issue 2, May 2024, Pages 2378–2419,
  doi:10.1093/mnras/stae922

• Mladen Ivkovic,
  GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism And Dynamic Sub-Cycling with SWIFT
  PhD Thesis, EPFL, Lausanne Switzerland, 2023.
  doi:10.5075/epfl-thesis-9973

• Mladen Ivkovic, Romain Teyssier,
  ACACIA: a new method to produce on-the-fly merger trees in the RAMSES code
  Monthly Notices of the Royal Astronomical Society, Volume 510, Issue 1, February 2022, Pages 959-979,
  doi:10.1093/mnras/stab3329

Talks, Seminars, Presentations

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• Memory Layouts for GPU-Data Transfer Buffering in SPH (4.4MB)
  PPAM 2026 Conference, Poznan, September 2026
• Debugging Principles, or: The Essentials of gdb (1MB)
  Debugging and Correctness Workshop, Durham, November 2025
• GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism And Dynamic Sub-Cycling with SWIFT (7.5MB) Virgo Consortium Meeting, Sussex, January 2025
• SWIFT 2: Towards Exascale SPH With Task Based Parallelism (5.5MB)
  SWIFTCon, Leiden, September 2024
• SWIFT 2: Towards Exascale SPH With Task Based Parallelism (11MB)
  Materials Modelling using Peta to Exascale Computing, Daresbury, July 2024
  SPH-SIG Meeting, Manchester, July 2024
• GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism and Dynamic Sub-Cycling with SWIFT (28.5MB)
  Sussex, May 2024
• SWIFT 2: Keeping the Good, Discussing the Bad, Removing the Ugly (2MB)
  Durham HPC/AI days, Durham, May 2024
• GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism and Dynamic Sub-Cycling with SWIFT (12.9MB)
  CosmICConnections, Durham, March 2024
• GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism and Dynamic Sub-Cycling with SWIFT (3.6MB)
  Building Galaxies From Scratch Conference, Vienna, February 2024
• GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism and Dynamic Sub-Cycling with SWIFT (26MB)
  Edinburgh, January 2024
• From printf to a Proper Bug Finding Strategy – Debugging And Testing Basics (2MB)
  Debugging, Testing, and Correctness Workshop Series 2023, Durham, 2023
• SWIFT 2: Keeping the Good, Discussing the Bad, Removing the Ugly (2MB)
  Towards unified sub-grid prescriptions for galaxy modeling/SWIFTCon Leiden, September 2023
• Code developement best practices: generally and in SWIFT (7MB)
  Towards unified sub-grid prescriptions for galaxy modeling/SWIFTCon Leiden, September 2023
• SWIFT 2: Keeping the Good, Discussing the Bad, Removing the Ugly (2MB)
  PAX-HPC project meeting, Durham HPC Days, May 2023
• Public PhD Thesis Defense Slides (42MB)
  Slides for my public PhD thesis defense, Versoix, March 2023
• GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism and Dynamic Sub-Cycling with SWIFT (14MB)
  SKACH Winter Meeting, Basel, January 2022
• Closed PhD Thesis Defense Slides (36MB)
  Slides for my closed PhD thesis defense, Lausanne, December 2022
• ACACIA (10.1MB)
  December 2019
• Meshless Methods in Astrophysics (3.1MB)
  November 2019

• Presentation on the Riemann problem, Riemann solvers and Godunov Methods, following E. F. Toro’s “Riemann Solvers and Numerical Methods for Fluid Dynamics”
  February 2019

  • Riemann Problem, Solvers and Godunov Method Script (9.7MB)
  • Numerical Advection Slides (8.9MB)
  • Exact Riemann Solver Solutions Slides (1.4MB)
  • Godunov Solver with exact Riemann solver Slides (2.6MB)
  • Godunov Solver with approximate Riemann solver Slides (2.4MB)
  • Exact Riemann solver and Godunov’s method solver with multiple Riemann solvers Code in C (568KB)
• Master Thesis Slides (16MB)
  The slides for the defense of the master thesis, Zurich, September 2018
• Bachelor Thesis Slides (6.5MB)
  The slides for the defense of the bachelor thesis, Zurich, June 2017
• Bachelor Thesis Slides short version (2.5MB)
  The slides for the defense of the bachelor thesis, June 2017

Posters

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• SWIFT 2: Keeping the Good, Discussing the Bad, Removing the Ugly (2MB)
  Building Galaxies From Scratch Conference, Vienna, February 2024

Theses

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• PhD Thesis (44MB)
  “GEAR-RT: Towards Exa-Scale Moment Based Radiative Transfer For Cosmological Simulations Using Task-Based Parallelism And Dynamic Sub-Cycling with SWIFT”, February 2023
  Also available on the EPFL site, NASA ADS, and github.
• Closed PhD Thesis Defense Slides (36MB)
  Slides for my closed PhD thesis defense, December 2022
• Public PhD Thesis Defense Slides (42MB)
  Slides for my public PhD thesis defense, March 2023
• Master Thesis (4.1MB)
  “Creating Mock Galaxy Catalogues From Dark Matter Simulations”, September 2018
• Master Thesis Slides (16MB)
  The slides for the defense of the master thesis, September 2018
• Master Thesis Slides Short Version (16MB)
  The slides for the defense of the master thesis, September 2018
• Bachelor Thesis (12MB)
  “Halo- and Subhalo-Finding in Cosmological N-Body Simulations”, June 2017
• Bachelor Thesis Slides (6.5MB)
  The slides for the defense of the bachelor thesis, June 2017
• Bachelor Thesis Slides short version (2.5MB)
  The slides for the defense of the bachelor thesis, June 2017