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ECP-ST-CAR.toc.make
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\contentsline {section}{EXECUTIVE SUMMARY}{v}{Doc-Start}
\contentsline {section}{LIST OF FIGURES}{viii}{Doc-Start}
\contentsline {section}{LIST OF TABLES}{ix}{Doc-Start}
\contentsline {section}{\numberline {1}Introduction}{1}{section.1}
\contentsline {subsection}{\numberline {1.1}Background}{1}{subsection.1.1}
\contentsline {subsection}{\numberline {1.2}ECP Software Technology Approach}{4}{subsection.1.2}
\contentsline {subsubsection}{\numberline {1.2.1}Software Development Kits}{4}{subsubsection.1.2.1}
\contentsline {paragraph}{ECP ST SDKs}{6}{table.caption.3}
\contentsline {paragraph}{The xSDK}{6}{figure.caption.4}
\contentsline {subsubsection}{\numberline {1.2.2}ECP ST Software Delivery}{7}{subsubsection.1.2.2}
\contentsline {paragraph}{ECP ST Delivery and HI Deployment}{7}{subsubsection.1.2.2}
\contentsline {paragraph}{ECP ST Delivery Strategy}{7}{subsubsection.1.2.2}
\contentsline {subsection}{\numberline {1.3}ECP ST Project Restructuring}{8}{subsection.1.3}
\contentsline {subsection}{\numberline {1.4}New Project Efforts}{12}{subsection.1.4}
\contentsline {subsubsection}{\numberline {1.4.1}FFTs}{12}{subsubsection.1.4.1}
\contentsline {subsubsection}{\numberline {1.4.2}LLNL Math Libraries}{13}{subsubsection.1.4.2}
\contentsline {section}{\numberline {2}ECP ST Technical Areas}{14}{section.2}
\contentsline {subsection}{\numberline {2.1}{\texttt {WBS 2.3.{1}}} Programming Models \& Runtimes}{14}{subsection.2.1}
\contentsline {subsubsection}{\numberline {2.1.1}Scope and Requirements}{14}{subsubsection.2.1.1}
\contentsline {subsubsection}{\numberline {2.1.2}Assumptions and Feasibility}{14}{subsubsection.2.1.2}
\contentsline {subsubsection}{\numberline {2.1.3}Objectives}{14}{subsubsection.2.1.3}
\contentsline {subsubsection}{\numberline {2.1.4}Plan}{14}{subsubsection.2.1.4}
\contentsline {subsubsection}{\numberline {2.1.5}Risks and Mitigation Strategies}{15}{subsubsection.2.1.5}
\contentsline {subsection}{\numberline {2.2}{\texttt {WBS 2.3.{2}}} Development Tools}{15}{subsection.2.2}
\contentsline {subsubsection}{\numberline {2.2.1}Scope and Requirements}{15}{subsubsection.2.2.1}
\contentsline {subsubsection}{\numberline {2.2.2}Assumptions and Feasibility }{16}{subsubsection.2.2.2}
\contentsline {subsubsection}{\numberline {2.2.3}Objectives}{16}{subsubsection.2.2.3}
\contentsline {subsubsection}{\numberline {2.2.4}Plan}{16}{subsubsection.2.2.4}
\contentsline {subsubsection}{\numberline {2.2.5}Risks and Mitigations Strategies}{17}{subsubsection.2.2.5}
\contentsline {subsection}{\numberline {2.3}{\texttt {WBS 2.3.{3}}} Mathematical Libraries}{17}{subsection.2.3}
\contentsline {subsubsection}{\numberline {2.3.1}Scope and Requirements}{17}{subsubsection.2.3.1}
\contentsline {subsubsection}{\numberline {2.3.2}Assumptions and Feasibility}{18}{subsubsection.2.3.2}
\contentsline {subsubsection}{\numberline {2.3.3}Objectives}{18}{subsubsection.2.3.3}
\contentsline {subsubsection}{\numberline {2.3.4}Plan}{18}{subsubsection.2.3.4}
\contentsline {subsubsection}{\numberline {2.3.5}Risks and Mitigations Strategies}{18}{subsubsection.2.3.5}
\contentsline {subsection}{\numberline {2.4}{\texttt {WBS 2.3.{4}}} Data \& Visualization}{19}{subsection.2.4}
\contentsline {subsubsection}{\numberline {2.4.1}Scope and Requirements}{19}{subsubsection.2.4.1}
\contentsline {subsubsection}{\numberline {2.4.2}Assumptions and Feasibility}{20}{subsubsection.2.4.2}
\contentsline {subsubsection}{\numberline {2.4.3}Objectives}{20}{subsubsection.2.4.3}
\contentsline {subsubsection}{\numberline {2.4.4}Plan}{21}{subsubsection.2.4.4}
\contentsline {subsubsection}{\numberline {2.4.5}Risks and Mitigations Strategies}{21}{subsubsection.2.4.5}
\contentsline {subsection}{\numberline {2.5}{\texttt {WBS 2.3.{5}}} SW Ecosystem \& Delivery}{22}{subsection.2.5}
\contentsline {subsubsection}{\numberline {2.5.1}Scope and Requirements}{22}{subsubsection.2.5.1}
\contentsline {subsubsection}{\numberline {2.5.2}Assumptions and Feasibility}{23}{subsubsection.2.5.2}
\contentsline {subsubsection}{\numberline {2.5.3}Objectives}{23}{subsubsection.2.5.3}
\contentsline {subsubsection}{\numberline {2.5.4}Plan}{24}{subsubsection.2.5.4}
\contentsline {subsubsection}{\numberline {2.5.5}Risks and Mitigations Strategies}{24}{subsubsection.2.5.5}
\contentsline {section}{\numberline {3}ECP ST Deliverables}{25}{section.3}
\contentsline {subsection}{\numberline {3.1}ECP ST Products}{25}{subsection.3.1}
\contentsline {subsection}{\numberline {3.2}Standards Committees}{28}{subsection.3.2}
\contentsline {subsection}{\numberline {3.3}Contributions to External Software Products}{28}{subsection.3.3}
\contentsline {section}{\numberline {4}ECP ST Project Summaries}{31}{section.4}
\contentsline {subsection}{\numberline {4.1}Programming Models \& Runtimes}{32}{subsection.4.1}
\contentsline {subsubsection}{\numberline {4.1.1}{\texttt {WBS 2.3.{1.01}}} Programming Models \& Runtimes\ Software Development Kits}{33}{subsubsection.4.1.1}
\contentsline {paragraph}{Overview}{33}{subsubsection.4.1.1}
\contentsline {subsubsection}{\numberline {4.1.2}{\texttt {WBS 2.3.{1.02}}} LANL ATDM Programming Models and Runtimes}{34}{subsubsection.4.1.2}
\contentsline {paragraph}{Overview}{34}{subsubsection.4.1.2}
\contentsline {paragraph}{Key Challenges}{34}{subsubsection.4.1.2}
\contentsline {paragraph}{Solution Strategy}{34}{subsubsection.4.1.2}
\contentsline {paragraph}{Recent Progress}{34}{figure.caption.21}
\contentsline {paragraph}{Next Steps}{35}{figure.caption.21}
\contentsline {subsubsection}{\numberline {4.1.3}{\texttt {WBS 2.3.{1.03}}} LLNL ATDM Programming Models and Runtimes}{36}{subsubsection.4.1.3}
\contentsline {paragraph}{Overview}{36}{subsubsection.4.1.3}
\contentsline {paragraph}{Key Challenges}{36}{subsubsection.4.1.3}
\contentsline {paragraph}{Solution Strategy}{36}{subsubsection.4.1.3}
\contentsline {paragraph}{Recent Progress}{37}{figure.caption.22}
\contentsline {paragraph}{Next Steps}{37}{figure.caption.22}
\contentsline {subsubsection}{\numberline {4.1.4}{\texttt {WBS 2.3.{1.04}}} SNL ATDM Programming Models: Kokkos}{38}{subsubsection.4.1.4}
\contentsline {paragraph}{Overview}{38}{subsubsection.4.1.4}
\contentsline {paragraph}{Key Challenges}{38}{subsubsection.4.1.4}
\contentsline {paragraph}{Solution Strategy}{38}{subsubsection.4.1.4}
\contentsline {paragraph}{Recent Progress}{39}{figure.caption.23}
\contentsline {paragraph}{Next Steps}{39}{figure.caption.23}
\contentsline {subsubsection}{\numberline {4.1.5}{\texttt {WBS 2.3.{1.04}}} SNL ATDM Programming Models: DARMA}{40}{subsubsection.4.1.5}
\contentsline {paragraph}{Overview}{40}{subsubsection.4.1.5}
\contentsline {paragraph}{Key Challenges}{40}{subsubsection.4.1.5}
\contentsline {paragraph}{Solution Strategy}{40}{subsubsection.4.1.5}
\contentsline {paragraph}{Recent Progress}{41}{figure.caption.24}
\contentsline {paragraph}{Next Steps}{41}{figure.caption.24}
\contentsline {subsubsection}{\numberline {4.1.6}{\texttt {WBS 2.3.{1.05}}} xGA}{42}{subsubsection.4.1.6}
\contentsline {paragraph}{Overview}{42}{subsubsection.4.1.6}
\contentsline {paragraph}{Key Challenges}{42}{subsubsection.4.1.6}
\contentsline {paragraph}{Solution Strategy}{42}{subsubsection.4.1.6}
\contentsline {paragraph}{Recent Progress}{42}{Item.11}
\contentsline {paragraph}{Next Steps}{43}{figure.caption.25}
\contentsline {subsubsection}{\numberline {4.1.7}{\texttt {WBS 2.3.{1.06}}} ISC4MCM (RAJA)}{44}{subsubsection.4.1.7}
\contentsline {paragraph}{Overview.}{44}{subsubsection.4.1.7}
\contentsline {paragraph}{Key Challenges.}{44}{Item.21}
\contentsline {paragraph}{Solution Strategy.}{44}{Item.21}
\contentsline {paragraph}{Recent Progress}{45}{Item.21}
\contentsline {paragraph}{Next Steps}{45}{Item.21}
\contentsline {subsubsection}{\numberline {4.1.8}{\texttt {WBS 2.3.{1.07}}} Exascale MPI}{46}{subsubsection.4.1.8}
\contentsline {paragraph}{Overview}{46}{subsubsection.4.1.8}
\contentsline {paragraph}{Key Challenges}{46}{subsubsection.4.1.8}
\contentsline {paragraph}{Solution Strategy}{46}{Item.32}
\contentsline {paragraph}{Recent Progress}{47}{Item.32}
\contentsline {paragraph}{Next Steps}{47}{figure.caption.26}
\contentsline {subsubsection}{\numberline {4.1.9}{\texttt {WBS 2.3.{1.08}}} Legion}{48}{subsubsection.4.1.9}
\contentsline {paragraph}{Overview}{48}{subsubsection.4.1.9}
\contentsline {paragraph}{Key Challenges}{48}{subsubsection.4.1.9}
\contentsline {paragraph}{Solution Strategy}{48}{subsubsection.4.1.9}
\contentsline {paragraph}{Recent Progress}{48}{subsubsection.4.1.9}
\contentsline {paragraph}{Next Steps}{48}{figure.caption.27}
\contentsline {subsubsection}{\numberline {4.1.10}{\texttt {WBS 2.3.{1.09}}} Distributed Tasking at Exascale: PaRSEC}{50}{subsubsection.4.1.10}
\contentsline {paragraph}{Overview}{50}{subsubsection.4.1.10}
\contentsline {paragraph}{Key Challenges}{50}{figure.caption.28}
\contentsline {paragraph}{Solution Strategy}{50}{figure.caption.28}
\contentsline {paragraph}{Recent Progress}{50}{figure.caption.28}
\contentsline {paragraph}{Next Steps}{51}{figure.caption.29}
\contentsline {subsubsection}{\numberline {4.1.11}{\texttt {WBS 2.3.{1.10}}} Kokkos Support}{52}{subsubsection.4.1.11}
\contentsline {paragraph}{Overview}{52}{subsubsection.4.1.11}
\contentsline {paragraph}{Key Challenges}{52}{subsubsection.4.1.11}
\contentsline {paragraph}{Solution Strategy}{52}{subsubsection.4.1.11}
\contentsline {paragraph}{Recent Progress}{52}{subsubsection.4.1.11}
\contentsline {paragraph}{Next Steps}{52}{subsubsection.4.1.11}
\contentsline {subsubsection}{\numberline {4.1.12}{\texttt {WBS 2.3.{1.11}}} Open MPI for Exascale (OMPI-X)}{54}{subsubsection.4.1.12}
\contentsline {paragraph}{Overview}{54}{subsubsection.4.1.12}
\contentsline {paragraph}{Key Challenges}{54}{subsubsection.4.1.12}
\contentsline {paragraph}{Solution Strategy}{54}{subsubsection.4.1.12}
\contentsline {paragraph}{Recent Progress}{55}{subsubsection.4.1.12}
\contentsline {paragraph}{Next Steps}{55}{figure.caption.30}
\contentsline {subsubsection}{\numberline {4.1.13}{\texttt {WBS 2.3.{1.12}}} Runtime System for Application-Level Power Steering on Exascale Systems}{56}{subsubsection.4.1.13}
\contentsline {paragraph}{Overview}{56}{subsubsection.4.1.13}
\contentsline {paragraph}{Key Challenges}{56}{subsubsection.4.1.13}
\contentsline {paragraph}{Solution Strategy}{56}{subsubsection.4.1.13}
\contentsline {paragraph}{Recent Progress}{57}{subsubsection.4.1.13}
\contentsline {paragraph}{Next Steps}{57}{figure.caption.31}
\contentsline {subsubsection}{\numberline {4.1.14}{\texttt {WBS 2.3.{1.13}}} SOLLVE}{58}{subsubsection.4.1.14}
\contentsline {paragraph}{Overview}{58}{subsubsection.4.1.14}
\contentsline {paragraph}{Key Challenges}{58}{subsubsection.4.1.14}
\contentsline {paragraph}{Solution Strategy}{58}{subsubsection.4.1.14}
\contentsline {paragraph}{Recent Progress}{59}{Item.37}
\contentsline {paragraph}{Next Steps}{59}{figure.caption.32}
\contentsline {subsubsection}{\numberline {4.1.15}{\texttt {WBS 2.3.{1.13}}} Argobots: Flexible, High-Performance Lightweight Threading }{60}{subsubsection.4.1.15}
\contentsline {paragraph}{Overview}{60}{subsubsection.4.1.15}
\contentsline {paragraph}{Key Challenges}{60}{subsubsection.4.1.15}
\contentsline {paragraph}{Solution Strategy}{60}{subsubsection.4.1.15}
\contentsline {paragraph}{Recent Progress}{60}{figure.caption.33}
\contentsline {paragraph}{Next Steps}{61}{figure.caption.33}
\contentsline {subsubsection}{\numberline {4.1.16}{\texttt {WBS 2.3.{1.13}}} BOLT: Lightning Fast OpenMP}{62}{subsubsection.4.1.16}
\contentsline {paragraph}{Overview}{62}{subsubsection.4.1.16}
\contentsline {paragraph}{Key Challenges}{62}{subsubsection.4.1.16}
\contentsline {paragraph}{Solution Strategy}{62}{subsubsection.4.1.16}
\contentsline {paragraph}{Recent Progress}{62}{subsubsection.4.1.16}
\contentsline {paragraph}{Next Steps}{63}{figure.caption.34}
\contentsline {subsubsection}{\numberline {4.1.17}{\texttt {WBS 2.3.{1.14}}} UPC++}{64}{subsubsection.4.1.17}
\contentsline {paragraph}{Overview}{64}{subsubsection.4.1.17}
\contentsline {paragraph}{Key Challenges}{64}{subsubsection.4.1.17}
\contentsline {paragraph}{Solution Strategy}{64}{subsubsection.4.1.17}
\contentsline {paragraph}{Recent Progress}{65}{Item.48}
\contentsline {paragraph}{Next Steps}{65}{figure.caption.35}
\contentsline {subsubsection}{\numberline {4.1.18}{\texttt {WBS 2.3.{1.14}}} GASNet-EX}{66}{subsubsection.4.1.18}
\contentsline {paragraph}{Overview}{66}{subsubsection.4.1.18}
\contentsline {paragraph}{Key Challenges}{66}{subsubsection.4.1.18}
\contentsline {paragraph}{Solution Strategy}{66}{subsubsection.4.1.18}
\contentsline {paragraph}{Recent Progress}{66}{subsubsection.4.1.18}
\contentsline {paragraph}{Next Steps}{67}{figure.caption.36}
\contentsline {subsubsection}{\numberline {4.1.19}{\texttt {WBS 2.3.{1.15}}} Enhancing Qthreads for ECP Science and Energy Impact}{68}{subsubsection.4.1.19}
\contentsline {paragraph}{Overview}{68}{subsubsection.4.1.19}
\contentsline {paragraph}{Key Challenges}{68}{subsubsection.4.1.19}
\contentsline {paragraph}{Solution Strategy}{68}{subsubsection.4.1.19}
\contentsline {paragraph}{Recent Progress}{68}{subsubsection.4.1.19}
\contentsline {paragraph}{Next Steps}{69}{figure.caption.37}
\contentsline {subsubsection}{\numberline {4.1.20}{\texttt {WBS 2.3.{1.16}}} SICM}{70}{subsubsection.4.1.20}
\contentsline {paragraph}{Overview}{70}{subsubsection.4.1.20}
\contentsline {paragraph}{Key Challenges}{71}{figure.caption.38}
\contentsline {paragraph}{Solution Strategy}{71}{figure.caption.38}
\contentsline {paragraph}{Recent Progress}{71}{figure.caption.38}
\contentsline {paragraph}{Next Steps}{72}{figure.caption.38}
\contentsline {subsection}{\numberline {4.2}Development Tools}{73}{subsection.4.2}
\contentsline {subsubsection}{\numberline {4.2.1}{\texttt {WBS 2.3.{2.01}}} Development Tools\ Software Development Kits}{74}{subsubsection.4.2.1}
\contentsline {paragraph}{Overview}{74}{subsubsection.4.2.1}
\contentsline {subsubsection}{\numberline {4.2.2}{\texttt {WBS 2.3.{2.02}}} LANL ATDM Tools}{75}{subsubsection.4.2.2}
\contentsline {paragraph}{Overview}{75}{subsubsection.4.2.2}
\contentsline {paragraph}{Key Challenges}{75}{Item.54}
\contentsline {paragraph}{Solution Strategy}{75}{Item.54}
\contentsline {paragraph}{Recent Progress}{75}{Item.54}
\contentsline {paragraph}{Next Steps}{75}{Item.54}
\contentsline {subsubsection}{\numberline {4.2.3}{\texttt {WBS 2.3.{2.03}}} LLNL ATDM Development Tools Projects}{76}{subsubsection.4.2.3}
\contentsline {paragraph}{Overview}{76}{subsubsection.4.2.3}
\contentsline {paragraph}{Key Challenges}{76}{subsubsection.4.2.3}
\contentsline {paragraph}{Solution Strategy}{76}{subsubsection.4.2.3}
\contentsline {paragraph}{Recent Progress}{77}{subsubsection.4.2.3}
\contentsline {paragraph}{Next Steps}{77}{subsubsection.4.2.3}
\contentsline {subsubsection}{\numberline {4.2.4}{\texttt {WBS 2.3.{2.04}}} SNL ATDM Tools}{78}{subsubsection.4.2.4}
\contentsline {paragraph}{Overview}{78}{subsubsection.4.2.4}
\contentsline {paragraph}{Key Challenges}{78}{subsubsection.4.2.4}
\contentsline {paragraph}{Solution Strategy}{78}{subsubsection.4.2.4}
\contentsline {paragraph}{Recent Progress}{79}{Item.59}
\contentsline {paragraph}{Next Steps}{79}{Item.59}
\contentsline {subsubsection}{\numberline {4.2.5}{\texttt {WBS 2.3.{2.05}}} Exascale Code Generation Toolkit}{80}{subsubsection.4.2.5}
\contentsline {paragraph}{Overview}{80}{subsubsection.4.2.5}
\contentsline {paragraph}{Key Challenges}{80}{subsubsection.4.2.5}
\contentsline {paragraph}{Solution Strategy}{80}{subsubsection.4.2.5}
\contentsline {paragraph}{Recent Progress}{81}{figure.caption.39}
\contentsline {paragraph}{Next Steps}{81}{figure.caption.39}
\contentsline {subsubsection}{\numberline {4.2.6}{\texttt {WBS 2.3.{2.06}}} Exa-PAPI}{82}{subsubsection.4.2.6}
\contentsline {paragraph}{Overview}{82}{subsubsection.4.2.6}
\contentsline {paragraph}{Key Challenges}{82}{subsubsection.4.2.6}
\contentsline {paragraph}{Solution Strategy}{82}{subsubsection.4.2.6}
\contentsline {paragraph}{Recent Progress}{82}{subsubsection.4.2.6}
\contentsline {paragraph}{Next Steps}{83}{Item.68}
\contentsline {subsubsection}{\numberline {4.2.7}{\texttt {WBS 2.3.{2.07}}} YTune}{84}{subsubsection.4.2.7}
\contentsline {paragraph}{Overview}{84}{subsubsection.4.2.7}
\contentsline {paragraph}{Key Challenges}{84}{subsubsection.4.2.7}
\contentsline {paragraph}{Solution Strategy}{84}{subsubsection.4.2.7}
\contentsline {paragraph}{Recent Progress}{85}{subsubsection.4.2.7}
\contentsline {paragraph}{Next Steps}{85}{subsubsection.4.2.7}