# Funding

We thank the United States Department of Energy, [Office of Science](http://science.energy.gov/),
Advanced Scientific Computing Research (ASCR)
[Applied Mathematics Research](http://science.energy.gov/ascr/research/applied-mathematics/),
[SciDAC](https://www.scidac.org/), and
[Exascale Project](https://www.exascaleproject.org/) programs for providing much of the funding of PETSc.

Specific and previous funding sources:

- High Energy Physics (HEP) SciDAC Partnership [Multiscale acceleration: Powering future discoveries in High Energy Physics](https://www.scidac.gov/partnerships/high-energy-physics.html), 2022-
- Biological and Environmental Research (BER) SciDAC Partnership [Capturing the Dynamics of Compound Flooding in E3SM](https://www.scidac.gov/partnerships/bio-env-research.html), 2022-
- Fusion Energy Science (FES) SciDAC Partnership [Partnership Center for High-fidelity Boundary Plasma Simulation (SciDAC-4)](https://www.scidac.gov/partnerships/fusion-energy.html), 2005-
- FES SciDAC Partnership [Simulation Center for Runaway Electron Avoidance and Mitigation](https://www.scidac.gov/partnerships/fusion-energy.html), 2015-2023
- Exascale Computing Project [WDMApp](https://www.exascaleproject.org/research-project/wdmapp), 2021
- Applied Mathematics Base (Core) funding, 1994-
- Preparing PETSc/TAO for Exascale a DOE [Exascale Project](https://www.exascaleproject.org/)
- SciDAC [FASTMath Project](https://fastmath-scidac.llnl.gov/), 2011-
- SciDAC [TOPS Project](http://www.scalablesolvers.org/), 2001-2011
- DOE ASCR SciDAC-e, Large-Scale Differential Variational Inequalities for Heterogeneous Materials, 2010-2011
- NFS [Computational Infrastructure for Geodynamics](http://www.geodynamics.org/)
  (CIG), 2005-2009
- Advanced Reactor Simulation, Richard Martineau, LDRD, [Idaho National Laboratory](https://inl.gov/)
- Multiphase Flow Simulation, Ray Berry, LDRD, [Idaho National Laboratory](https://inl.gov/)
- The DOE 2000 [ACTS Toolkit](https://www.nersc.gov/news-publications/nersc-news/nersc-center-news/1998/acts-toolkit-support-debuts-on-the-web/)
- The DOE/FE ACTI program, late 1990's
- NSF `Multi-Model Multi-Domain Computational Methods in Aerodynamics and Acoustics`, 1996-1998
