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Suggested Citation:"Appendix E: Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2023. Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration. Washington, DC: The National Academies Press. doi: 10.17226/26916.
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E
Acronyms and Abbreviations

1D one-dimensional
2D two-dimensional
3D three-dimensional
AI artificial intelligence
AI4Sci AI for Science
AI4SES AI for Science, Energy, and Security
ALE Arbitrary Lagrangian-Eulerian
AMR adaptive mesh refinement
ANL Argonne National Laboratory
ASC Advanced Simulation and Computing
ASCI Accelerated Strategic Computing Initiative
ASCR Advanced Scientific Computing Research
ASIC application-specific integrated circuit
CHIPS Creating Helpful Incentives to Produce Semiconductors
CJ Chapman-Jouguet
CMOS complementary metal-oxide semiconductor
CSGF Computational Science Graduate Fellowship
DARHT Dual Axis Radiographic Hydrodynamic Test Facility
DOE Department of Energy
DRAM dynamic random access memory
Suggested Citation:"Appendix E: Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2023. Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration. Washington, DC: The National Academies Press. doi: 10.17226/26916.
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ECP Exascale Computing Project
EOS equation of state
EUV extreme ultraviolet
FLOP floating-point operation
FLOPS floating-point operations per second
FPGA field-programmable gate array
HBM high-bandwidth memory
HPC high-performance computing
IaaS infrastructure as a service
IC integrated circuit
LANL Los Alamos National Laboratory
LEP life extension program
LES large eddy simulation
LLNL Lawrence Livermore National Laboratory
MFLOP millions of floating-point operation
MPI message passing interface
NDAA National Defense Authorization Act
NEP nuclear explosive package
NIF National Ignition Facility
NISQ noisy intermediate-scale quantum
NIST National Institute of Standards and Technology
NNSA National Nuclear Security Administration
NNSS Nevada National Security Site
NSSC Nuclear Science and Security Consortium
NUMA nonuniform memory access
ORNL Oak Ridge National Laboratory
PaaS platform as a service
PDE Partial Differential Equation
PSAAP Predictive Science Academic Alliance Program
Suggested Citation:"Appendix E: Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2023. Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration. Washington, DC: The National Academies Press. doi: 10.17226/26916.
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QMU quantification of margins and uncertainties
R&D research and development
RANS Reynolds-averaged Navier-Stokes
SaaS software as a service
SBSS Science-Based Stockpile Stewardship
SNL Sandia National Laboratories
SoC system-on-a-chip
TSMC Taiwan Semiconductor Manufacturing Company
VVUQ verification, validation, and uncertainty quantification
Suggested Citation:"Appendix E: Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2023. Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration. Washington, DC: The National Academies Press. doi: 10.17226/26916.
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Page 104
Suggested Citation:"Appendix E: Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2023. Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration. Washington, DC: The National Academies Press. doi: 10.17226/26916.
×
Page 105
Suggested Citation:"Appendix E: Acronyms and Abbreviations." National Academies of Sciences, Engineering, and Medicine. 2023. Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration. Washington, DC: The National Academies Press. doi: 10.17226/26916.
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Page 106
Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration Get This Book
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 Charting a Path in a Shifting Technical and Geopolitical Landscape: Post-Exascale Computing for the National Nuclear Security Administration
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In 2022, the United States installed its first exascale computing system for the Department of Energy (DOE) Office of Science, with an National Nuclear Security Administration (NNSA) system scheduled for 2023. The DOE Exascale Computing Project (ECP)2 has developed new applications capabilities, parallelization approaches, and software tools, while co-developing the computing systems in collaboration with vendor partners. The NNSA is positioned to take full advantage of exascale computing, but demand for more computing will continue to grow beyond exascale, driven by both familiar applications and new mission drivers and new computational approaches that will use high-end computing. Visionary leaders and creativity will be needed to move existing codes to next-generation platforms, to reconsider the use of advanced computing for current and emerging mission problems, and to envision new types of computing systems, algorithmic techniques implemented in software, partnerships, and models of system acquisition.

This report reviews the future of computing beyond exascale computing to meet national security needs at the National Nuclear Security Administration, including computing needs over the next 20 years that exascale computing will not support; future computing technologies for meeting those needs including quantum computing and other novel hardware, computer architecture, and software; and the likely trajectory of promising hardware and software technologies and obstacles to their development and their deployment by NNSA.

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