An accelerated approach to inline non-LTE modeling

Holladay, Daniel Alphin; Fontes, Christopher John; Even, Wesley Paul; McClarren, Ryan Gerard

doi:10.1016/j.hedp.2020.100746

Title: An accelerated approach to inline non-LTE modeling

Journal Article · 28 January 2020 · High Energy Density Physics

DOI: https://doi.org/10.1016/j.hedp.2020.100746 · OSTI ID:1597342

^[1];

^[2]; McClarren, Ryan Gerard ^[3]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Southern Utah Univ., Cedar City, UT (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Notre Dame, IN (United States)

A goal across many physics and engineering disciplines is to use radiation-hydrodynamics codes to accurately simulate systems that are expected to deviate from local thermodynamic equilibrium (LTE), such as laser-driven hohlraums, stellar coronae, and supernova ejecta. The computational expense of traditional non-LTE (NLTE) opacity calculations can dominate the cost of simulating these systems and render NLTE physics untenable in most cases. In this paper, we present a new parallel implementation for NLTE opacity calculations that employs advanced load balancing, vectorization, and memory management to significantly reduce the computational costs of these calculations. Using the radiation-hydrodynamics code xRAGE, we demonstrate this new implementation on three test problems and present order-of-magnitude speed improvements.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1597342

Report Number(s):: LA-UR--19-22192

Journal Information:: High Energy Density Physics, Journal Name: High Energy Density Physics Journal Issue: C Vol. 34; ISSN 1574-1818

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (30)

Incorporating Line Radiation Effects into Edge Plasma Codes Scott, Howard A.; Adams, Mark L. Contributions to Plasma Physics, Vol. 44, Issue 13 https://doi.org/10.1002/ctpp.200410008	journal	April 2004
Atomic processes in near-equilibrium plasmas More, R. M.; Kato, T.; Libby, S. B. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 71, Issue 2-6 https://doi.org/10.1016/S0022-4073(01)00093-0	journal	October 2001
Cretin—a radiative transfer capability for laboratory plasmas Scott, Howard A. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 71, Issue 2-6 https://doi.org/10.1016/S0022-4073(01)00109-1	journal	October 2001
Review of the NLTE emissivities code comparison virtual workshop Bowen, C.; Decoster, A.; Fontes, C. J. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 81, Issue 1-4 https://doi.org/10.1016/S0022-4073(03)00061-X	journal	September 2003
Review of the NLTE kinetics code workshop Lee, Richard W.; Nash, J. K.; Ralchenko, Y. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 58, Issue 4-6 https://doi.org/10.1016/S0022-4073(97)00079-4	journal	October 1997
Non-LTE modeling of gold plasmas Fontes, C. J.; Jr, J. Abdallah; Clark, R. E. H. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 65, Issue 1-3 https://doi.org/10.1016/S0022-4073(99)00069-2	journal	April 2000
Non-LTE radiation transport in high radiation plasmas Scott, Howard A. High Energy Density Physics, Vol. 1, Issue 1 https://doi.org/10.1016/j.hedp.2005.08.002	journal	December 2005
Calculation of tin emission spectra in discharge plasma: The influence of reabsorption in spectral lines Novikov, Vladimir G.; Ivanov, Vladimir V.; Koshelev, Konstantin N. High Energy Density Physics, Vol. 3, Issue 1-2 https://doi.org/10.1016/j.hedp.2007.02.014	journal	May 2007
Review of the 4th NLTE Code Comparison Workshop Rubiano, J. G.; Florido, R.; Bowen, C. High Energy Density Physics, Vol. 3, Issue 1-2 https://doi.org/10.1016/j.hedp.2007.02.027	journal	May 2007
The reduced detailed configuration accounting (RDCA) model for NLTE plasma calculations Abdallah, Joseph; Sherrill, M. E. High Energy Density Physics, Vol. 4, Issue 3-4 https://doi.org/10.1016/j.hedp.2008.05.001	journal	October 2008
Review of the NLTE-5 kinetics workshop Fontes, C. J.; Abdallah, J.; Bowen, C. High Energy Density Physics, Vol. 5, Issue 1-2 https://doi.org/10.1016/j.hedp.2009.02.004	journal	June 2009
Improvements to the RADIOM non-LTE model Busquet, M.; Colombant, D.; Klapisch, M. High Energy Density Physics, Vol. 5, Issue 4 https://doi.org/10.1016/j.hedp.2009.05.005	journal	December 2009
The reduced detailed configuration accounting (RDCA) model for NLTE plasma spectral calculations Abdallah, Joseph; Sherrill, M. E.; Kilcrease, D. P. High Energy Density Physics, Vol. 5, Issue 3 https://doi.org/10.1016/j.hedp.2009.05.006	journal	September 2009
Advances in NLTE modeling for integrated simulations Scott, H. A.; Hansen, S. B. High Energy Density Physics, Vol. 6, Issue 1 https://doi.org/10.1016/j.hedp.2009.07.003	journal	January 2010
The role of a detailed configuration accounting (DCA) atomic physics package in explaining the energy balance in ignition-scale hohlraums Rosen, M. D.; Scott, H. A.; Hinkel, D. E. High Energy Density Physics, Vol. 7, Issue 3 https://doi.org/10.1016/j.hedp.2011.03.008	journal	September 2011
Doppler effects on 3-D non-LTE radiation transport and emission spectra Hansen, S. B.; Jones, B.; Giuliani, J. L. High Energy Density Physics, Vol. 7, Issue 4 https://doi.org/10.1016/j.hedp.2011.06.002	journal	December 2011
Comparison and analysis of collisional-radiative models at the NLTE-7 workshop Chung, H. -K.; Bowen, C.; Fontes, C. J. High Energy Density Physics, Vol. 9, Issue 4 https://doi.org/10.1016/j.hedp.2013.06.001	journal	December 2013
Review of the 9th NLTE code comparison workshop Piron, R.; Gilleron, F.; Aglitskiy, Y. High Energy Density Physics, Vol. 23 https://doi.org/10.1016/j.hedp.2017.02.009	journal	June 2017
Kokkos: Enabling manycore performance portability through polymorphic memory access patterns Carter Edwards, H.; Trott, Christian R.; Sunderland, Daniel Journal of Parallel and Distributed Computing, Vol. 74, Issue 12 https://doi.org/10.1016/j.jpdc.2014.07.003	journal	December 2014
Comparing plasma population kinetics codes: Review of the NLTE-3 Kinetics Workshop Bowen, C.; Lee, R. W.; Ralchenko, Yu. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3 https://doi.org/10.1016/j.jqsrt.2005.05.008	journal	May 2006
An efficient tabulated collisional radiative equilibrium radiation transport model suitable for multidimensional hydrodynamics calculations Thornhill, J. W.; Apruzese, J. P.; Davis, J. Physics of Plasmas, Vol. 8, Issue 7 https://doi.org/10.1063/1.1373415	journal	July 2001
Evidence and mechanisms of axial-radiation asymmetry in dynamic hohlraums driven by wire-array Z pinches Sanford, T. W. L.; Nash, T. J.; Mock, R. C. Physics of Plasmas, Vol. 12, Issue 2 https://doi.org/10.1063/1.1850479	journal	February 2005
Blast wave energy diagnostic Tierney, Thomas E.; Tierney, Heidi E.; Idzorek, George C. Review of Scientific Instruments, Vol. 79, Issue 10 https://doi.org/10.1063/1.2992295	journal	October 2008
Radiation‐dependent ionization model for laser‐created plasmas Busquet, M. Physics of Fluids B: Plasma Physics, Vol. 5, Issue 11 https://doi.org/10.1063/1.860586	journal	November 1993
Updated Opal Opacities Iglesias, Carlos A.; Rogers, Forrest J. The Astrophysical Journal, Vol. 464 https://doi.org/10.1086/177381	journal	June 1996
The Los Alamos suite of relativistic atomic physics codes Fontes, C. J.; Zhang, H. L.; Jr, J. Abdallah Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 48, Issue 14 https://doi.org/10.1088/0953-4075/48/14/144014	journal	May 2015
The RAGE radiation-hydrodynamic code Gittings, Michael; Weaver, Robert; Clover, Michael Computational Science & Discovery, Vol. 1, Issue 1 https://doi.org/10.1088/1749-4699/1/1/015005	journal	October 2008
Breakdown of the quasistatic approximation at high densities and its effect on the heliumlike K α complex of nickel, iron, and calcium Oelgoetz, Justin; Fontes, Christopher J.; Zhang, Hong Lin Physical Review A, Vol. 76, Issue 6 https://doi.org/10.1103/PhysRevA.76.062504	journal	December 2007
Updated opacities from the Opacity Project Badnell, N. R.; Bautista, M. A.; Butler, K. Monthly Notices of the Royal Astronomical Society, Vol. 360, Issue 2 https://doi.org/10.1111/j.1365-2966.2005.08991.x	journal	June 2005
A new Generation of los Alamos Opacity Tables Colgan, J.; Kilcrease, D. P.; Magee, N. H. The Astrophysical Journal, Vol. 817, Issue 2 https://doi.org/10.3847/0004-637X/817/2/116	journal	January 2016

Similar Records

Systematic investigation of NLTE phenomena in the limit of small departures from LTE

Journal Article · 1997 · AIP Conference Proceedings · OSTI ID:624805

Libby, S B; Graziani, F R; More, R M; +1 more

Systematic investigation of NLTE phenomena in the limit of small departure from LTE

Conference · 1997 · OSTI ID:642513

Libby, S B; Graziani, F R; More, R M; +1 more

Systematic investigation of NLTE phenomena in the limit of small departures from LTE

Journal Article · 1997 · AIP Conference Proceedings · OSTI ID:21167509

Libby, S B; Graziani, F R; More, R M; +1 more

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Computational Methods
NLTE
Opacity
Radiation Transport

Title: An accelerated approach to inline non-LTE modeling

Citation Formats

References (30)

Similar Records

Related Subjects