90 citations · 142 across the 14 of their papers we have counts for
15 papers
A General Capacity Frontier of Complex Networks
Nicholas Kunz, H. Oliver Gao
From cells to cities, ecosystems to economies, complex networks exhibit peak intensities that define their empirical limit. Estimating these limits traditionally requires domain-sp…
A fast spectral-multigrid Poisson solver in non-Cartesian geometries
Ankush Mandal, Oliver Gressel, Udo Ziegler +1
Accurate and efficient computation of self-gravity is essential in astrophysical fluid dynamics, particularly in spherical and cylindrical geometries where large radial dynamic ran…
On the Limits of Performance Portability in Directive-Based GPU Programming
Alessandro Romeo, Nitin Shukla, Stefano Truzzi +2
The transition of scientific applications to GPU-accelerated exascale systems is constrained by trade-offs between performance, portability, and productivity. This work evaluates t…
The PLUTO Code on GPUs: Offloading Lagrangian Particle Methods
Alessio Suriano, Stefano Truzzi, Agnese Costa +5
The Lagrangian Particles (LP) module of the PLUTO code offers a powerful simulation tool to predict the non-thermal emission produced by shock accelerated particles in large-scale…
EuroHPC SPACE CoE: Redesigning Scalable Parallel Astrophysical Codes for Exascale
Nitin Shukla, Alessandro Romeo, Caterina Caravita +36
High Performance Computing (HPC) based simulations are crucial in Astrophysics and Cosmology (A&C), helping scientists investigate and understand complex astrophysical phenomena. T…
2D or not 2D? Exploring 3D relativistic magnetic reconnection dynamics with highly accurate numerical simulations
Vittoria Berta, Matteo Bugli, Andrea Mignone +3
Fast reconnection in magnetically dominated plasmas is widely invoked in models of dissipation in pulsar winds, gamma-ray flares in the Crab nebula, and to explain the radio nanosh…
The PLUTO Code on GPUs: A First Look at Eulerian MHD Methods
Marco Rossazza, Andrea Mignone, Matteo Bugli +7
We present preliminary performance results of gPLUTO, the new GPU-optimized implementation of the PLUTO code for computational plasma astrophysics. Like its predecessor, gPLUTO emp…
Towards Exascale Computing for Astrophysical Simulation Leveraging the Leonardo EuroHPC System
Nitin Shukla, Alessandro Romeo, Caterina Caravita +16
Developing and redesigning astrophysical, cosmological, and space plasma numerical codes for existing and next-generation accelerators is critical for enabling large-scale simulati…
PyPLUTO: a data analysis Python package for the PLUTO code
Giancarlo Mattia, Daniele Crocco, David Melon Fuksman +5
In recent years, numerical simulations have become indispensable for addressing complex astrophysical problems. The MagnetoHydroDynamics (MHD) framework represents a key tool for i…
UV-processing of icy pebbles in the outer parts of VSI-turbulent disks
Lizxandra Flores-Rivera, Michiel Lambrechts, Sacha Gavino +4
Icy dust particles emerge in star-forming clouds and are subsequently incorporated in protoplanetary disks, where they coagulate into larger pebbles up to mm in size. In the disk m…
Dusty substructures induced by planets in ALMA disks: how dust growth and dynamics changes the picture
Alexandros Ziampras, Prakruti Sudarshan, Cornelis P. Dullemond +4
Protoplanetary disks exhibit a rich variety of substructure in millimeter continuum emission, often attributed to unseen planets. As these planets carve gaps in the gas, dust parti…
A Fourth-Order Finite Volume Scheme for Resistive Relativistic Magnetohydrodynamics
Andrea Mignone, Vittoria Berta, Marco Rossazza +4
We present a finite-volume, genuinely 4th-order accurate numerical method for solving the equations of resistive relativistic magnetohydrodynamics (Res-RMHD) in Cartesian coordinat…
A -order accurate finite volume method for ideal classical and special relativistic MHD based on pointwise reconstructions
Vittoria Berta, Andrea Mignone, Matteo Bugli +1
We present a novel implementation of a genuinely -order accurate finite volume scheme for multidimensional classical and special relativistic magnetohydrodynamics (MHD)…
A comparison of approximate non-linear Riemann solvers for Relativistic MHD
Giancarlo Mattia, Andrea Mignone
We compare a particular selection of approximate solutions of the Riemann problem in the context of ideal relativistic magnetohydrodynamics. In particular, we focus on Riemann solv…
A conservative orbital advection scheme for simulations of magnetized shear flows with the PLUTO code
A. Mignone, M. Flock, M. Stute +2
Explicit numerical computations of super-fast differentially rotating disks are subject to the time-step constraint imposed by the Courant condition. When the bulk orbital velocity…