# National Nuclear Security Administration **Domain:** Austin Research / Institutions **Doc Type:** Research entity **Source basis:** Supplied research cluster with linked references; see the [[wiki/Austin Research Evidence Map|evidence map]] for verification scope. The **National Nuclear Security Administration (NNSA)** is the federal sponsor behind the Austin cluster’s [[wiki/Predictive Science Academic Alliance Program|PSAAP]] lineage. Its [[wiki/Advanced Simulation and Computing|Advanced Simulation and Computing]] program supports simulation capabilities and computational resources for nuclear-stockpile assessment and related scientific work. PSAAP engages universities in [[wiki/Predictive Science|predictive science]], computing methods, and workforce development. The original [[wiki/PECOS|PECOS]] award and its later PSAAP III work connect NNSA’s mission demands to Oden’s verified, validated, uncertainty-aware simulations. The causal link here is sponsorship of a defined research program. The corpus follows how methods developed under these constraints become useful in other high-consequence domains. Broader reuse is evaluated at the level of the receiving project rather than treated as NNSA sponsorship of every subsequent application. ## Connected entries [[wiki/Advanced Simulation and Computing|Advanced Simulation and Computing]] · [[wiki/Predictive Science Academic Alliance Program|Predictive Science Academic Alliance Program]] · [[wiki/Nuclear Stockpile Stewardship|Nuclear Stockpile Stewardship]] · [[wiki/PECOS|PECOS]] · [[wiki/Lawrence Livermore National Laboratory|Lawrence Livermore National Laboratory]] · [[wiki/Sandia National Laboratories|Sandia National Laboratories]] ## Sources and corpus context - [[research/The Austin Executable Loop|The Austin Executable Loop — master document]] - [NNSA Announces Selection of the Next Round of Predictive Science Academic Alliance Program Centers](https://www.energy.gov/nnsa/articles/nnsa-announces-selection-next-round-predictive-science-academic-alliance-program) - [DOE Timeline of Events: 2008 — PSAAP and PECOS](https://www.energy.gov/lm/timeline-events-2008) - [Predictive Science Research Gets Major Boost Thanks to the Department of Energy](https://news.utexas.edu/2020/10/05/predictive-science-research-gets-major-boost-thanks-to-the-department-of-energy/) **Cluster:** [[wiki/Austin Executable Loop|Austin Executable Loop]] · [[wiki/Austin Research Evidence Map|Austin Research Evidence Map]]