587 citations · 1.8k across the 24 of their papers we have counts for
25 papers
Foundational Competencies and Responsibilities of a Research Software Engineer: Current State and Suggestions for Future Directions
Florian Goth, Renato Alves, Matthias Braun +20
The term Research Software Engineer, or RSE, emerged a little over 10 years ago as a way to represent individuals working in the research community but focusing on software develop…
Need for Design Patterns: Interoperability Issues and Modelling Challenges for Observational Data
Trupti Padiya, Frank Löffler, Friederike Klan
Interoperability issues concerning observational data have gained attention in recent times. Automated data integration is important when it comes to the scientific analysis of obs…
Machine Learning Pipelines: Provenance, Reproducibility and FAIR Data Principles
Sheeba Samuel, Frank Löffler, Birgitta König-Ries
Machine learning (ML) is an increasingly important scientific tool supporting decision making and knowledge generation in numerous fields. With this, it also becomes more and more…
Numerical-relativity simulations of long-lived remnants of binary neutron star mergers
Roberto De Pietri, Alessandra Feo, José A. Font +3
We analyze the properties of the gravitational wave signal emitted after the merger of a binary neutron star system when the remnant survives for more than a 80 ms (and up to 140ms…
Convective Excitation of Inertial Modes in Binary Neutron Star Mergers
Roberto De Pietri, Alessandra Feo, José A. Font +4
We present the first very long-term simulations (extending up to ~140 ms after merger) of binary neutron star mergers with piecewise polytropic equations of state and in full gener…
A Survey of High Level Frameworks in Block-Structured Adaptive Mesh Refinement Packages
Anshu Dubey, Ann Almgren, John Bell +11
Over the last decade block-structured adaptive mesh refinement (SAMR) has found increasing use in large, publicly available codes and frameworks. SAMR frameworks have evolved along…
Modeling Mergers of Known Galactic Systems of Binary Neutron Stars
Alessandra Feo, Roberto De Pietri, Francesco Maione +1
We present a study of the merger of six different known galactic systems of binary neutron stars (BNS) of unequal mass with a mass ratio between and . Specifically, th…
Report on the Third Workshop on Sustainable Software for Science: Practice and Experiences (WSSSPE3)
Daniel S. Katz, Sou-Cheng T. Choi, Kyle E. Niemeyer +18
This report records and discusses the Third Workshop on Sustainable Software for Science: Practice and Experiences (WSSSPE3). The report includes a description of the keynote prese…
Sign learning kink-based (SiLK) quantum Monte Carlo for molecular systems
Xiaoyao Ma, Randall W. Hall, Frank Loffler +4
The Sign Learning Kink (SiLK) based Quantum Monte Carlo (QMC) method is used to calculate the ab initio ground state energies for multiple geometries of the HO, N, and F$…
Modeling Equal and Unequal Mass Binary Neutron Star Mergers Using Public Codes
Roberto De Pietri, Alessandra Feo, Francesco Maione +1
We present three-dimensional simulations of the dynamics of binary neutron star (BNS) mergers from the late stage of the inspiral process up to ms after the system has me…
Stiffness effects on the dynamics of the bar-mode instability of Neutron Stars in full General Relativity
Frank Löffler, Roberto De Pietri, Alessandra Feo +2
We present results on the effect of the stiffness of the equation of state on the dynamical bar-mode instability in rapidly rotating polytropic models of neutron stars in full Gene…
Chemora: A PDE Solving Framework for Modern HPC Architectures
Erik Schnetter, Marek Blazewicz, Steven R. Brandt +2
Modern HPC architectures consist of heterogeneous multi-core, many-node systems with deep memory hierarchies. Modern applications employ ever more advanced discretisation methods t…
Neutron Star instabilities in full General Relativity using a ideal fluid
Roberto De Pietri, Alessandra Feo, Luca Franci +1
We present results about the effect of the use of a stiffer equation of state, namely the ideal-fluid ones, on the dynamical bar-mode instability in rapidly rotating polyt…
Cactus: Issues for Sustainable Simulation Software
Frank Löffler, Steven R. Brandt, Gabrielle Allen +1
The Cactus Framework is an open-source, modular, portable programming environment for the collaborative development and deployment of scientific applications using high-performance…
Software Abstractions and Methodologies for HPC Simulation Codes on Future Architectures
A. Dubey, S. Brandt, R. Brower +9
Large, complex, multi-scale, multi-physics simulation codes, running on high performance com-puting (HPC) platforms, have become essential to advancing science and engineering. The…
From Physics Model to Results: An Optimizing Framework for Cross-Architecture Code Generation
Marek Blazewicz, Ian Hinder, David M. Koppelman +6
Starting from a high-level problem description in terms of partial differential equations using abstract tensor notation, the Chemora framework discretizes, optimizes, and generate…
An Introduction to the Einstein Toolkit
Miguel Zilhão, Frank Löffler
We give an introduction to the Einstein Toolkit, a mature, open-source computational infrastructure for numerical relativity based on the Cactus Framework, for the target group of…
GRHydro: A new open source general-relativistic magnetohydrodynamics code for the Einstein Toolkit
Philipp Moesta, Bruno C. Mundim, Joshua A. Faber +7
We present the new general-relativistic magnetohydrodynamics (GRMHD) capabilities of the Einstein Toolkit, an open-source community-driven numerical relativity and computational re…
A New Monte Carlo Method for Time-Dependent Neutrino Radiation Transport
Ernazar Abdikamalov, Adam Burrows, Christian D. Ott +4
Monte Carlo approaches to radiation transport have several attractive properties such as simplicity of implementation, high accuracy, and good parallel scaling. Moreover, Monte Car…
A Massive Data Parallel Computational Framework for Petascale/Exascale Hybrid Computer Systems
Marek Blazewicz, Steven R. Brandt, Peter Diener +5
Heterogeneous systems are becoming more common on High Performance Computing (HPC) systems. Even using tools like CUDA and OpenCL it is a non-trivial task to obtain optimal perform…
The Einstein Toolkit: A Community Computational Infrastructure for Relativistic Astrophysics
Frank Löffler, Joshua Faber, Eloisa Bentivegna +10
We describe the Einstein Toolkit, a community-driven, freely accessible computational infrastructure intended for use in numerical relativity, relativistic astrophysics, and other…
Dynamics and Gravitational Wave Signature of Collapsar Formation
C. D. Ott, C. Reisswig, E. Schnetter +7
We perform 3+1 general relativistic simulations of rotating core collapse in the context of the collapsar model for long gamma-ray bursts. We employ a realistic progenitor, rotatio…
Simplifying Complex Software Assembly: The Component Retrieval Language and Implementation
Eric L. Seidel, Gabrielle Allen, Steven Brandt +2
Assembling simulation software along with the associated tools and utilities is a challenging endeavor, particularly when the components are distributed across multiple source code…
Computational Models of Stellar Collapse and Core-Collapse Supernovae
C. D. Ott, E. Schnetter, A. Burrows +3
Core-collapse supernovae are among Nature's most energetic events. They mark the end of massive star evolution and pollute the interstellar medium with the life-enabling ashes of t…