Maciej Cytowski
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View article: Accelerating cosmological simulations on GPUs: a portable approach using OpenMP
Accelerating cosmological simulations on GPUs: a portable approach using OpenMP Open
In this work we present the porting to Graphics Processing Units (GPUs, using OpenMP target directives) and optimization of a key module within the cosmological {\pinocchio} code, a Lagrangian Perturbation Theory (LPT)-based framework wide…
View article: Portable GPU implementation of the WP-CCC ion-atom collisions code
Portable GPU implementation of the WP-CCC ion-atom collisions code Open
We present our experience of porting the code used in the wave-packet convergent-close-coupling (WP-CCC) approach to run on NVIDIA V100 and AMD MI250X GPUs. The WP-CCC approach is a method used in the field of ion-atom collision physics to…
View article: Taking the Convergent Close-Coupling Method beyond Helium: The Utility of the Hartree-Fock Theory
Taking the Convergent Close-Coupling Method beyond Helium: The Utility of the Hartree-Fock Theory Open
The convergent close-coupling (CCC) method was initially developed to describe electron scattering on atomic hydrogen and the hydrogenic ions such as He+. The latter allows implementation of double photoionization (DPI) of the helium atom.…
View article: Supercomputing Frontiers
Supercomputing Frontiers Open
As the share of supercomputers in Asia continues to increase, the relevance of supercomputing merits a supercomputing conference for Asia.Supercomputing Asia 2022 (SCA22) was an umbrella of notable supercomputing events that promoted a vib…
View article: Energy-based Accounting Model for Heterogeneous Supercomputers
Energy-based Accounting Model for Heterogeneous Supercomputers Open
In this paper we present a new accounting model for heterogeneous supercomputers. An increasing number of supercomputing centres adopt heterogeneous architectures consisting of CPUs and hardware accelerators for their systems. Accounting m…
View article: Calculations of electron scattering on H-like ions
Calculations of electron scattering on H-like ions Open
Electron-impact excitation and ionization of H-like ions of nuclear charge Z = 2,..., 8 have been calculated from thresholds to high energies, with a particular focus on spin asymmetry of the cross sections. It is found that the importance…
View article: Implementation of an Agent-Based Parallel Tissue Modelling Framework for the Intel MIC Architecture
Implementation of an Agent-Based Parallel Tissue Modelling Framework for the Intel MIC Architecture Open
Timothy is a novel large scale modelling framework that allows simulating of biological processes involving different cellular colonies growing and interacting with variable environment. Timothy was designed for execution on massively para…
View article: The Copernicus Complexio: a high-resolution view of the small-scale Universe
The Copernicus Complexio: a high-resolution view of the small-scale Universe Open
We introduce Copernicus Complexio (coco), a high-resolution cosmological N-body simulation of structure formation in the ΛCDM model. coco follows an approximately spherical region of radius ∼17.4 h−1 Mpc embedded in a much larger periodic …