We assess the performance of the hybrid Open Accelerator (OpenACC) and Message
Passing Interface (MPI) approach for multi-graphics processing units (GPUs) accelerated …

Abstract We utilize the Open Accelerator (OpenACC) approach for graphics processing unit
(GPU) accelerated particle-resolved thermal lattice Boltzmann (LB) simulation. We adopt the …

This paper describes a massively parallel code for a state-of-the art thermal lattice–
Boltzmann method. Our code has been carefully optimized for performance on one GPU and …

We present a new method for the numerical solution of the radiative-transfer equation (RTE)
in multidimensional scenarios commonly encountered in computational astrophysics. The …

Energy efficiency is becoming increasingly important for computing systems, in particular for
large scale High Performance Computing (HPC) facilities. In this work, we evaluate, from a …

Performance analysis tools allow application developers to identify and characterize the
inefficiencies that cause performance degradation in their codes, allowing for application …

Relativistic kinetic theory is ubiquitous to several fields of modern physics, finding
application at large scales in systems in astrophysical contexts, all of the way down to …

High-performance computing systems are more and more often based on accelerators.
Computing applications targeting those systems often follow a host-driven approach, in …

In the last years, the energy efficiency of HPC systems is increasingly becoming of
paramount importance for environmental, technical, and economical reasons. Several …

Patient-specific hemodynamic simulations have the potential to greatly improve both the
diagnosis and treatment of a variety of vascular diseases. Portability will enable wider …