Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Nexus: a modular workflow management system for quantum simulation codes

Journal Article · · Computer Physics Communications
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The management of simulation workflows is a significant task for the individual computational researcher. Automation of the required tasks involved in simulation work can decrease the overall time to solution and reduce sources of human error. A new simulation workflow management system, Nexus, is presented to address these issues. Nexus is capable of automated job management on workstations and resources at several major supercomputing centers. Its modular design allows many quantum simulation codes to be supported within the same framework. Current support includes quantum Monte Carlo calculations with QMCPACK, density functional theory calculations with Quantum Espresso or VASP, and quantum chemical calculations with GAMESS. Users can compose workflows through a transparent, text-based interface, resembling the input file of a typical simulation code. A usage example is provided to illustrate the process.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1240529
Journal Information:
Computer Physics Communications, Journal Name: Computer Physics Communications Vol. 198; ISSN 0010-4655
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (24)

CatApp: A Web Application for Surface Chemistry and Heterogeneous Catalysis journal December 2011
General atomic and molecular electronic structure system journal November 1993
N�herungsmethode zur L�sung des quantenmechanischen Mehrk�rperproblems journal January 1930
Monte-Carlo solution of Schrödinger's equation journal February 1971
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Data mining and accelerated electronic structure theory as a tool in the search for new functional materials journal February 2009
AFLOW: An automatic framework for high-throughput materials discovery journal June 2012
The MoSGrid Science Gateway – A Complete Solution for Molecular Simulations journal May 2014
The Harvard Clean Energy Project: Large-Scale Computational Screening and Design of Organic Photovoltaics on the World Community Grid journal August 2011
Stabilization of weak ferromagnetism by strong magnetic response to epitaxial strain in multiferroic BiFeO3 journal August 2015
Energy-consistent pseudopotentials for quantum Monte Carlo calculations journal June 2007
A random‐walk simulation of the Schrödinger equation: H + 3 journal August 1975
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Inhomogeneous Electron Gas journal November 1964
Ground State of Liquid He 4 journal April 1965
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Ab initiomolecular dynamics for liquid metals journal January 1993
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Energy density matrix formalism for interacting quantum systems: Quantum Monte Carlo study journal July 2014
Alleviation of the Fermion-Sign Problem by Optimization of Many-Body Wave Functions journal March 2007
New Developments in Molecular Orbital Theory journal April 1951
Quantum Monte Carlo simulations of solids journal January 2001
A taxonomy of scientific workflow systems for grid computing journal September 2005

Cited By (15)

Cohesion and excitations of diamond-structure silicon by quantum Monte Carlo: Benchmarks and control of systematic biases text January 2021
Many-body ab initio diffusion quantum Monte Carlo applied to the strongly correlated oxide NiO journal October 2015
Cohesive energy and structural parameters of binary oxides of groups IIA and IIIB from diffusion quantum Monte Carlo journal May 2016
Quantitative estimation of localization errors of 3 d transition metal pseudopotentials in diffusion Monte Carlo journal July 2017
Diffusion quantum Monte Carlo and density functional calculations of the structural stability of bilayer arsenene journal June 2018
Gaussian process based optimization of molecular geometries using statistically sampled energy surfaces from quantum Monte Carlo journal October 2018
The 2019 materials by design roadmap journal October 2018
QMCPACK : an open source ab initio quantum Monte Carlo package for the electronic structure of atoms, molecules and solids journal April 2018
Pseudopotentials for quantum Monte Carlo studies of transition metal oxides journal February 2016
Structural, electronic, and magnetic properties of bulk and epitaxial LaCoO 3 through diffusion Monte Carlo journal December 2019
AutoGAMESS: A Python package for automation of GAMESS(US) Raman calculations journal September 2019
Cohesive energy and structural parameters of binary oxides of groups IIA and IIIB from diffusion quantum Monte Carlo text January 2016
QMCPACK : An open source ab initio Quantum Monte Carlo package for the electronic structure of atoms, molecules, and solids text January 2018
AutoGAMESS: A Python package for automation of GAMESS(US) Raman calculations text January 2019
AutoGAMESS: A Python package for automation of GAMESS(US) Raman calculations text January 2019


Similar Records

Workflows in a secure environment
Conference · Mon Dec 31 23:00:00 EST 2007 · OSTI ID:963931

Task parallel sensitivity analysis and parameter estimation of groundwater simulations through the SALSSA framework
Conference · Thu Jul 15 00:00:00 EDT 2010 · OSTI ID:1033847

Supercomputing and Scientific Workflows Gaps and Requirements
Conference · Thu Sep 08 00:00:00 EDT 2011 · OSTI ID:1024538