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  Acknowledgement Algorithm

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     There is a script (contrib.sh) to generate the list (mostly) automagically.
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  3) Divide to
     Core team: regularly work on team stories and/or funded by the core team P/T
     Teams with jointly owned capabilities (Inverse and Plato)
     Other off team contributors: DevOps, SM, etc.
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  4) Each list is in alphabetical order by last name
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# Acknowledgments

The Sierra/SD software package is the collective effort of many individuals and teams.
A core Sandia National Laboratories based Sierra/SD development team is responsible for maintenance of documentation, testing, and
support of code capabilities.  This team includes
  Dagny Beale,
  Gregory Bunting,
  Nate Crane,
  David Day,
  Clark Dohrmann,
  Payton Lindsay,
  Justin Pepe,
  Julia Plews,
  Jesse Thomas,
  Ben Treweek,
  and
  Johnathan Vo.

The Sierra/SD team also works closely with the Sierra FuSED and Plato teams to jointly enhance and maintain several capabilities.
This includes contributions from
  Wilkins Aquino,
  Sean Hardesty,
  Elizabeth Livingston,
  Chandler Smith,
  Timothy Walsh,
  and
  Ray Wildman.

The Sierra/SD team works closely with other Sierra teams on core libraries and shared tools.
This includes the DevOps, Sierra Toolkit, Solid Mechanics, Fluid Thermal Teams.  Additionally,
analysts regularly provide code capabilities as well as help review and verify code capabilities,
testing, and documentation. Other individuals not already mentioned directly contributing to the Sierra/SD
documentation, testing, and code base during the last year include
  Victor Brunini,
  Jonathan Clausen,
  David Glaze,
  Mark Hamilton,
  Andrew Kimler,
  Dong Lee,
  Kevin Manktelow,
  Mark Merewether,
  Scott Miller,
  Matthew Mosby,
  Tony Nguyen,
  Tolu Okusanya,
  Heather Pacella,
  Kendall Pierson,
  Nick Reynolds,
  Timothy Shelton,
  John Shimanek,
  Greg Sjaardema,
  Clinton Stimpson,
  Tyler Voskuilen,
  Ellen Wagman,
  Alan Williams,
  and
  Christopher Wilson.

Historically dozens of other Sandia staff, students, and external
collaborators have also contributed to the Sierra/SD product and its
documentation.

Many other individuals groups have contributed either directly or
indirectly to the success of the Sierra/SD product. These include but
are not limited to;

- Garth Reese implemented the original Sierra/SD code base. He served as
  principal investigator and product owner for Sierra/SD for over twenty
  years. His efforts and contributions led to much of the current
  success of .
- Clark Dohrmann who developed the GDSW solver that is vital for
  parallel and GPU performance of Sierra/SD.
- David Day who directly supported Sierra/SD development work for over
  twenty years.
- The ASC program at the DOE which funded the initial Sierra/SD
  (Salinas) development as well as the ASC program which still provides
  the bulk of ongoing development support.
- Line managers at Sandia Labs who supported this effort. Special
  recognition is extended to David Martinez who helped establish the
  effort.
- Charbel Farhat and the University of Colorado at Boulder. They have
  provided incredible support in the area of finite elements, and
  especially in development of linear solvers.
- Carlos Felippa of U. Colorado at Boulder. His consultation has been
  invaluable, and includes the summer of 2001 where he visited at Sandia
  and developed the Hexshell element for us.
- Danny Sorensen, Rich Lehoucq and other developers of ARPACK, which is
  used for eigenvalue problems.
- Esmond Ng who wrote *sparspak* for us. This sparse solver package is
  responsible for much of the performance in Sierra/SD linear solvers.
- The *metis* team at the University of Minnesota. *Metis* is an
  important part of the graph partitioning schemes used by several of
  our linear solvers. These are copyright 1997 from the University of
  Minnesota.
- Padma Raghaven for development of a parallel direct solver that is a
  part of the linear solvers.
- The developers of the SuperLU Dist parallel sparse direct linear
  solver. It is used through GDSW for a variety of problems.
- Leszek Demkowicz at the University of Texas at Austin who provided the
  HP3D {cite}`hp3d_shape` library and has worked with the Sierra/SD team on
  several initiatives. The HP3D library is used to calculate shape
  functions for higher order elements.

This work was supported by the Laboratory Directed Research and
Development (LDRD) program.
