High Performance Architectures, Tools and Technologies -- Evaluating the Impact of MPI Network Sharing on HPC Applications -- Parallel Data Preprocessing Library for Neural Networks Training -- An Efficient LRnLA Algorithm and Data Structure for Manycore and Multicore Computers with Hierarchical Cache -- Parallel Numerical Algorithms -- Implementation of a Fuzzy Inference Method with Nonsingleton Fuzzification Based on CUDA and GPGPU Technologies -- Solving the Three-Dimensional Faddeev-Merkuriev Equations via Spline Collocation and Tensor Product Preconditioning -- Monitoring and Forecasting Crop Yields -- On Parallel Multigrid Methods for Solving Systems of Linear Algebraic Equations -- Optimized Relativistic Code for Massive Parallel Systems -- Using Parallel SAT Solving to Study Hard Combinatorial Problems Associated with Boolean Circuits -- Parallelization of the Generalized Multimode Nonlinear Schrodinger Equation Solver: a Performance Analysis -- On the Template Programming Approach for Shared Memory Parallel Architectures with Applications to the Fully Implicit Stokes Solver -- Parallel Computing in the Tikhonov Regularization Method for Solving the Inverse Problem of Chemical Kinetics -- Parallel Implementation of the Time-Reversal Mirror Method for Recovering the Position and Type of a Seismic Source from Observational Data -- Parallel Implementation of Fast Algorithms in the Vortex Particle Method -- Supercomputer Simulation -- Implementation of an Asymptotically Compact Algorithm for GPU Simulation of an Acoustic Equation -- Quantum-Chemical Simulation of High-Energy Azoxy Compounds -- Parallel Algorithms for Simulation of the Suspension Transport in Coastal Systems Based on the Explicit-Implicit and Splitting Schemes -- Parallel Numerical Implementation of Three-Dimensional Mathematical Models of Hydrodynamics Taking into Account Vertical Turbulent Exchange -- Comparison of Two Methods for Modelling the Dynamics of Gas Flows in a Protoplanetary Disk -- Computer Modeling of Metal Nanoclusters and Substrate Interaction at Mesoscopic Level -- Supercomputer Simulation of Plasma Flow in the Diamagnetic Mode of Open Magnetic Systems -- Computer Simulation of the Three-Dimensional Synthesis of Phase Images of Nanometer Scale Objects -- A Parallel Algorithm for a Two-Phase Gas-Solid-Particle Model with Chemical Reactions and Laser Radiation -- MPI-based Computational Algorithm for Modeling a Cylindrical Catalyst Grain during Oxidative Regeneration -- Research of the Influence of the Thermal State of an Air-Intake Model on In-Flight Icing Conditions.

This book constitutes the refereed post proceedings of the 17th International Conference on Parallel Computational Technologies, PCT 2023, held in Saint Petersburg, Russia, during March 28-30, 2023. The 25 full papers included in this book were carefully reviewed and selected from 71 submissions. They were organized in topical sections as follows: "High Performance Architectures, Tools and Technologies", "Parallel Numerical Algorithms", and "Supercomputer Simulation".