Journal articles

  1. J. A. Hopman, D. Santos, A. Alsalti-Baldellou, J. Rigola, and F. X. Trias (2025). Quantifying the checkerboard problem to reduce numerical dissipation, DOI: 10.1016/j.jcp.2024.113537 (preprint).
  2. A. Alsalti-Baldellou, A. Franceschini, G. Mazzucco, and C. Janna (2024). Efficient AMG reduction-based preconditioners for structural mechanics, Computer Methods in Applied Mechanics and Engineering, 431, 117249, DOI: 10.1016/j.cma.2024.117249.
  3. A. Alsalti-Baldellou, C. Janna, X. Álvarez-Farré, and F. X. Trias (2024). A multigrid reduction framework for domains with symmetries, accepted in SIAM Journal on Scientific Computing, preprint: 10.48550/arXiv.2407.05930.
  4. F. X. Trias, X. Álvarez-Farré, A. Alsalti-Baldellou, A. Gorobets, and A. Oliva (2024). An efficient eigenvalue bounding method: CFL condition revisited, Computer Physics Communications, 305, 109351, DOI: 10.1016/j.cpc.2024.109351.
  5. A. Alsalti-Baldellou, X. Álvarez-Farré, G. Colomer, A. Gorobets, C. D. Pérez-Segarra, A. Oliva, and F. X. Trias (2024). Lighter and faster simulations on domains with symmetries, Computers & Fluids, 275, 106247, DOI: 10.1016/j.compfluid.2024.106247.
  6. A. Alsalti-Baldellou, X. Álvarez-Farré, F. X. Trias, and A. Oliva (2023). Exploiting spatial symmetries for solving Poisson's equation, Journal of Computational Physics, 486, 112133, DOI: 10.1016/j.jcp.2023.112133.

PhD thesis

    A. Alsalti-Baldellou, "Development of linear solvers for large-scale CFD simulations on hybrid supercomputers", Ph.D. dissertation at the Polytechnic University of Catalonia, supervised by Prof. F. Xavier Trias and Prof. Assensi Oliva, 2023, Barcelona (Spain), DOI: 10.5821/dissertation-2117-405131.

Conference proceedings

  1. M. Mosqueda-Otero, A. Alsalti-Baldellou, X. Álvarez-Farré, J. Plana-Riu, G. Colomer, F. X. Trias, and A. Oliva, "A portable algebraic implementation for reliable overnight industrial LES", in 9th European Thermal-Sciences Conference, 2024, Bled (Slovenia).
  2. J. Plana-Riu, F. X. Trias, G. Colomer, A. Alsalti-Baldellou, X. Álvarez-Farré, and A. Oliva, "Enabling lighter and faster simulations with repeated matrix blocks", in 9th European Thermal-Sciences Conference, 2024, Bled (Slovenia).
  3. F. X. Trias, A. Alsalti-Baldellou, and A. Oliva, "Roadmap for extreme-scale simulations: on the evolution of Poisson solvers", in 35th Parallel CFD International Conference, 2024, Bonn (Germany).
  4. A. Alsalti-Baldellou, G. Colomer, J. A. Hopman, X. Álvarez-Farré, A. Gorobets, F. X. Trias, C. D. Pérez-Segarra, and A. Oliva, "On the feasibility of overnight industrial high-fidelity simulations of CSP technologies on modern HPC systems", in 9th European Thermal-Sciences Conference, 2024, Bled (Slovenia).
  5. J. Plana-Riu, F. X. Trias, A. Alsalti-Baldellou, G. Colomer, and A. Oliva, "Ensemble averaging parallel-in-time approach for industrial LES", in 9th European Thermal-Sciences Conference, 2024, Bled (Slovenia).
  6. A. Alsalti-Baldellou, C. Janna, X. Álvarez-Farré, and F. X. Trias, "A multigrid reduction framework for CFD simulations on symmetric domains", in 9th European Congress on Computational Methods in Applied Sciences and Engineering, 2024, Lisbon (Portugal).
  7. X. Álvarez-Farré, A. Alsalti-Baldellou, M. Rodrigues, and F. X. Trias, "Performance analysis of SpMM in distributed parallel CFD simulations", in 9th European Congress on Computational Methods in Applied Sciences and Engineering, 2024, Lisbon (Portugal).
  8. J. A. Hopman, A. Alsalti-Baldellou, J. Rigola, and F. X. Trias, "Cost-accuracy analysis for symmetry-preserving methods", in 9th European Congress on Computational Methods in Applied Sciences and Engineering, 2024, Lisbon (Portugal).
  9. J. Plana-Riu, F. X. Trias, A. Alsalti-Baldellou, G. Colomer, and A. Oliva, "Performance analysis of parallel-in-time techniques in modern supercomputers", in 9th European Congress on Computational Methods in Applied Sciences and Engineering, 2024, Lisbon (Portugal).
  10. A. Alsalti-Baldellou, C. Janna, A. Franceschini, G. Mazzucco, X. Álvarez-Farré, and F. X. Trias, "Exploiting symmetries for preconditioning Poisson's equation in CFD simulations", in SIAM Conference on Parallel Processing for Scientific Computing, 2024, Baltimore (USA).
  11. A. Alsalti-Baldellou, F. X. Trias, and A. Oliva, "On the evolution of Poisson solvers for extreme-scale simulations", in 10th International Symposium on Turbulence, Heat and Mass Transfer, 2023, Rome (Italy).
  12. J. A. Hopman, A. Alsalti-Baldellou, F. X. Trias, and J. Rigola, "On a checkerboard-free, conservative method for turbulent flows", in 10th International Symposium on Turbulence, Heat and Mass Transfer, 2023, Rome (Italy).
  13. A. Alsalti-Baldellou, G. Colomer, J. A. Hopman, X. Álvarez-Farré, F. X. Trias, C. D. Pérez-Segarra, and A. Oliva, "Reliable overnight industrial LES: challenges and limitations. Application to CSP technologies", in 14th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements, 2023, Barcelona (Spain).
  14. J. A. Hopman, A. Alsalti-Baldellou, F. X. Trias, and A. Oliva, "On a conservative solution to checkerboarding: examining the causes of non-physical pressure modes", in 14th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements, 2023, Barcelona (Spain).
  15. A. Alsalti-Baldellou, C. Janna, X. Álvarez-Farré, and F. X. Trias, "Exploiting symmetries for preconditioning Poisson's equation in CFD simulations", in Platform for Advanced Scientific Computing Conference, 2023, Davos (Switzerland).
  16. A. Alsalti-Baldellou, C. Janna, X. Álvarez-Farré, and F. X. Trias, "Low-rank corrections for increasing the arithmetic intensity of the preconditioners", in 34th Parallel CFD International Conference, 2023, Cuenca (Ecuador).
  17. J. Plana-Riu, F. X. Trias, A. Alsalti-Baldellou, and A. Oliva, "Strategies for increasing the arithmetic intensity on ensemble averaged parallel-in-time simulations", in 34th Parallel CFD International Conference, 2023, Cuenca (Ecuador).
  18. F. X. Trias, A. Alsalti-Baldellou, and A. Oliva, "Exa, zetta, yotta and beyond: on the evolution of poisson solvers", in 34th Parallel CFD International Conference, 2023, Cuenca (Ecuador).
  19. A. Alsalti-Baldellou, X. Álvarez-Farré, A. Gorobets, and F. X. Trias, "Efficient strategies for solving the variable Poisson equation with large contrasts in the coefficients", in 8th European Congress on Computational Methods in Applied Sciences and Engineering, 2022, Oslo (Norway).
  20. X. Álvarez-Farré, A. Alsalti-Baldellou, G. Colomer, A. Gorobets, A. Oliva, and F. X. Trias, "Development of a low-level, algebra-based library to provide platform portability on hybrid supercomputers", in 8th European Congress on Computational Methods in Applied Sciences and Engineering, 2022, Oslo (Norway).
  21. F. X. Trias, X. Álvarez-Farré, A. Alsalti-Baldellou, A. Gorobets, and A. Oliva, "DNS and LES on unstructured grids: playing with matrices to preserve symmetries using a minimal set of algebraic kernels", in 8th European Congress on Computational Methods in Applied Sciences and Engineering, 2022, Oslo (Norway).
  22. A. Alsalti-Baldellou, X. Álvarez-Farré, A. Gorobets, A. Oliva, and F. X. Trias, "Strategies to increase the arithmetic intensity of the linear solvers", in 33rd Parallel CFD International Conference, 2022, Alba (Italy).
  23. X. Álvarez-Farré, A. Alsalti-Baldellou, A. Gorobets, A. Oliva, and F. X. Trias, "On the benefits and applications of sparse matrix-matrix product on various parallel architectures", in 33rd Parallel CFD International Conference, 2022, Alba (Italy).
  24. F. X. Trias, X. Álvarez-Farré, A. Alsalti-Baldellou, A. Gorobets, and A. Oliva, "DNS/LES using a minimal set of algebraic kernels: challenges and opportunities", in 33rd Parallel CFD International Conference, 2022, Alba (Italy).
  25. X. Álvarez-Farré, A. Alsalti-Baldellou, A. Gorobets, A. Oliva, and F. X. Trias, "Enabling larger and faster simulations from mesh symmetries", in 2nd High-Fidelity Industrial LES/DNS Symposium, 2021, Toulouse (France).
  26. A. Alsalti-Baldellou, F. X. Trias, X. Álvarez-Farré, and A. Oliva, "A highly portable heterogeneous implementation of a Poisson solver for flows with one periodic direction", in 32nd Parallel CFD International Conference, 2021, Nice (France).
  27. A. Alsalti-Baldellou, F. X. Trias, A. Gorobets, and A. Oliva, "On preconditioning variable Poisson equation with extreme contrasts in the coefficients", in 14th World Congress in Computational Mechanics and ECCOMAS Congress, 2021, Paris (France).
  28. X. Álvarez-Farré, A. Gorobets, F. X. Trias, and A. Alsalti-Baldellou, "A pure virtual approach for managing platform portability on hybrid supercomputers", in 31st Parallel CFD International Conference, 2020, Antalya (Turkey).