This book constitutes the refereed proceedings of the 19th International Conference on Parallel Computational Technologies, PCT 2025, held in Moscow, Russia, during April 8–10, 2025.The 31 full papers included in this volume were carefully reviewed and selected from 122 submissions. These papers were organized under the following topical sections: High Performance Architectures, Tools and Technologies; Parallel Numerical Algorithms; and Supercomputer Simulation.
.- High Performance Architectures, Tools and Technologies. .- Optimizing Computational Infrastructure for Large Language Models in Bioinformatics: a Case Study..- High-Performance Computing at HSE University..- A Machine Learning-Based Plugin for SLURM: Improving Job Scheduling through Ensemble Learning..- On the Template Programming Approach for Shared-Memory Parallel Architectures Across GPU Vendors Using CUDA, SYCL, and HIP..- A High-Level Framework for Distributed Systems with Simulation-Based Testing Support..- Critical Jobs Scheduling in Cloud Workow-as-a-Service Platforms..- Parallelization and a New Python Interface of the LIBGRPP Library for the Evaluation of Molecular Integrals over Generalized Relativistic Pseudopotentials..- Routing Table Generation and Node Allocation Algorithms for the Angara High-Performance Interconnect..- Composable Parallelism in Data Processing Tasks. .- Parallel Numerical Algorithms. .- Using a Cascade of Supervised Machine Learning Models to Discover Causality in Pairs of Variables..- Parallel Algebro-Geometric Multigrid Methods for Unstructured Grids..- Parallelizing the Cycle Merging Algorithm for the Traveling Salesman Problem..- Achieving the Maximum Performance of the Resolution of the Identity Approximation in the Hartree–Fock Method..- Parallel Implementation of Voronoi Tessellation in the Julia Programming Language..- Efficient Parallel Algorithm for Decomposing Hard CircuitSAT Instances. .- Supercomputer Simulation..- Microwave Radiative Transfer in Rainy Atmospheres: the Successive-Orders-of-Scattering Approach..- Mathematical Modeling of Wave Surges in the Sea of Azov Using Remote Sensing Data?..- Adaptive Mesh Refinement Technique for High-Performance Hydrodynamic Modeling of Relativistic Flows..- Computer Simulation of an Unsteady Process in a Catalyst Layer with Cylindrical Grain Shape..- Parallel Method for Simulating Relativistic Radiative Gas Dynamics in Gamma-Ray Bursts on Tetrahedral Meshes..- Quantum-Chemical Study of Unsubstituted Tris(triazolo)benzenes and 1,3,5-Triazines..- Efficiency of Parallel Simulations of Coupled Surface Water and Sediment Dynamics in Riverbeds..- GPU Implementation of the LS-STAG Immersed Boundary Method for Turbulent Flow Simulations..- Efficient Parallel Computational Techniques for Implementing a Reaction-Diffusion Model of Bacterial Growth in Media..- A New Lattice-Based Scheme for the Numerical Simulation of Electromagnetic Phenomena..- Modeling High-Energy Compton Radiation Sources on Modern Computational Architectures (CPU and GPU)..- Elementary Plasma Mirror Model: CPU-GPU Methods for Accelerating Numerical Simulations..- Performance Analysis of Computational Devices in Quantum Chemistry Tasks..- Scaling up Molecular Hydrodynamics of Non-laminar Flows with GPU-aware MPI..- Superconductivity and Trimer Formation in Attractive Hubbard Ladders..- Performance Analysis of a New Three-Dimensional Plasma Physics Solver.