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MPAS-Albany

Houses the land-ice component of the U.S. Department of Energy's Energy Exascale Earth System Model known as MPAS-Albany Land Ice.
https://github.com/sandialabs/Albany

Category: Cryosphere
Sub Category: Glacier and Ice Sheets

Keywords

scr-1341 snl-applications snl-science-libs

Keywords from Contributors

sandia-national-laboratories parallel-computing parallel mesh snl-prog-models-runtimes programming-model kokkos abstraction mpi snl-comp-science-libs

Last synced: about 16 hours ago
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Repository metadata

Sandia National Laboratories' Albany multiphysics code

README.md

Albany

Albany is an implicit, unstructured grid, finite element code for the solution and analysis of multiphysics
problems. The Albany repository on the GitHub site contains over 100 regression tests and examples
that demonstrate the code's capabilities on a wide variety of problems including fluid mechanics, ice-sheet flow and other applications. In particular, Albany houses the land-ice component of the U.S. Department of Energy's Energy Exascale Earth System Model (E3SM) known as MPAS-Albany Land Ice (MALI).

The Albany web page is located at http://sandialabs.github.io/Albany

Features

Analysis of complex multiphysics problems

von Karman Vortex Street

Illustration of a von Karman vortex street that forms around a heated tube bundle under certain conditions

Software Architecture

Albany heavily leverages the Trilinos Framework, available at:

git clone https://github.com/trilinos/Trilinos.git

Albany supports the solution of very large problems (those over 2.1 billion degrees of freedom) using MPI, and
also demonstrates the use of the Kokkos hardware abstraction package to support
generic manycore computing across a variety of platforms - MPI + [threads, OpenMP, Cuda, Intel MIC].

Building Albany

Detailed build instructions for both Trilinos and Albany are maintained on the Albany wiki at https://github.com/sandialabs/Albany/wiki/Building-Albany-and-supporting-tools. We note that it is also possible to build Albany using spack; for details on how to do this, please see the Building Albany using Spack site.

We note also that there exists a supported Python interface to Albany, known as PyAlbany. Please see the following slides on PyAlbany for more information.

Nightly Build and Test Results

Ths nightly build results for the Trilinos and SCOREC libraries along with Albany and the status of the Albany regression tests are posted on the world-viewable Albany CDash site at http://my.cdash.org/index.php?project=Albany, as well as an additional CDash site internal to Sandia National Laboratories.

The regression test suite is contained within the Albany repository in the directories:

/tests

These tests are stand-alone and also serve as nice examples about how to describe various PDEs discretized in Albany. They also serve as a template for developing new simulations.

Once Albany is built, the default test suite is executed by typing ctest within the build directory. Any individual test can be executed by
moving into its sub-directory, and executing ctest in that sub-directory. Many Albany tests run in parallel using up to 4 MPI ranks.

Documentation

An HTML user guide can be found inside the Albany repository at:

/doc/user-guide/guide.html

The LaTeX Developer's Guide is located at:

/doc/developersGuide

Note that these documents are not maintained and may be out-of-date with respect to the current version of Albany. For specific questions about using or developing Albany, please contact Irina Tezaur at [email protected].

Note on Unsupported Code and Albany Tags Containing Past Capabilities

Prior version of Albany included additional capabilities not present in the current version of the code, such as Quantum Computer Aided Design (QCAD), Model Order Reduction (MOR), Advanced Topology Optimization (ATO), etc. These capabilities are still available as Albany tags. Each tag has documentation about the version of Trilinos that can be used to build the tag.

The Laboratory for Computational Mechanics (LCM) capabilities within Albany have been moved to separate repositories: Albany-LCM and Albany-SCOREC. The latter repository contains capabilities for adaptive mesh refinement (AMR) using the Parallel Unstructured Mesh Interface (PUMI) library developed at the Rennselaer Polytechnic Institute (RPI). While Albany-LCM is developed/maintained by a Sandia team, the status of the Albany-SCOREC team is unknown at the present time.

Owner metadata

GitHub Events

Total
Last Year

Committers metadata

Last synced: 6 days ago

Total Commits: 13,752
Total Committers: 166
Avg Commits per committer: 82.843
Development Distribution Score (DDS): 0.753

Commits in past year: 249
Committers in past year: 10
Avg Commits per committer in past year: 24.9
Development Distribution Score (DDS) in past year: 0.679

Name Email Commits
Irina K. Tezaur i****h@s****v 3390
Alejandro Mota a****a@s****v 1725
Luca Bertagna l****g@s****v 977
Mauro Perego m****o@s****v 752
Dan Ibanez d****e@s****v 628
Glen Hansen g****e@s****v 567
Andrew M. Bradley a****l@s****v 432
Jake Ostien j****e@s****v 390
Brian Granzow b****w@g****m 359
Andy Salinger a****n@s****v 352
David Littlewood d****l@s****v 280
Julien Cortial j****a@s****v 264
Steve Sun w****n@s****v 244
Jerry Watkins j****n@s****v 237
Jay Foulk j****k@s****v 201
Luca l****4@g****m 200
mcarlson801 m****n@g****m 180
Coleman Alleman c****a@s****v 161
James Overfelt j****f@s****v 140
Erik Nielsen e****e@s****v 138
ipdemes i****s@s****v 136
kliegeois k****s@y****m 132
Cameron Smith s****1@r****u 124
Guba o****a@s****v 120
Mario Juha m****a@g****m 110
Eric Phipps e****p@s****v 102
Jenn Frederick j****e@s****v 98
Irina Tezaur i****h@c****v 89
Qiushi Chen q****n@s****v 81
Joshua Robbins j****n@s****v 68
and 136 more...

Committer domains:

Issue and Pull Request metadata

Last synced: 1 day ago

Total issues: 150
Total pull requests: 140
Average time to close issues: 6 months
Average time to close pull requests: 8 days
Total issue authors: 10
Total pull request authors: 12
Average comments per issue: 7.41
Average comments per pull request: 2.12
Merged pull request: 131
Bot issues: 0
Bot pull requests: 0

Past year issues: 54
Past year pull requests: 48
Past year average time to close issues: 11 days
Past year average time to close pull requests: 10 days
Past year issue authors: 6
Past year pull request authors: 10
Past year average comments per issue: 5.81
Past year average comments per pull request: 2.0
Past year merged pull request: 41
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/sandialabs/Albany

Top Issue Authors

  • ikalash (91)
  • jewatkins (24)
  • bartgol (16)
  • mcarlson801 (10)
  • mperego (3)
  • ludydulimi (2)
  • stefano2734 (1)
  • thartland (1)
  • xylar (1)
  • kliegeois (1)

Top Pull Request Authors

  • bartgol (44)
  • jewatkins (25)
  • mcarlson801 (24)
  • mperego (19)
  • kliegeois (11)
  • cwsmith (7)
  • OscarAntepara (3)
  • bartlettroscoe (2)
  • ikalash (2)
  • thartland (1)
  • jeremy-brooks-1 (1)
  • jhux2 (1)

Top Issue Labels

  • Testing (68)
  • build (21)
  • LandIce (18)
  • Omega_h (10)
  • CUDA (10)
  • Kokkos (9)
  • question (8)
  • spack (7)
  • help wanted (7)
  • PyAlbany (6)
  • Discussion (5)
  • Code cleanup (5)
  • developer usability (4)
  • Trilinos (4)
  • infrastructure (3)
  • bug (1)
  • enhancement (1)
  • STK (1)
  • Work In Progress (1)

Top Pull Request Labels

  • bugfix (21)
  • Code cleanup (13)
  • enhancement (12)
  • Omega_h (11)
  • STK (4)
  • PyAlbany (4)
  • Trilinos (3)
  • LandIce (3)
  • Testing (3)
  • bug (2)
  • infrastructure (2)
  • user usability (2)
  • developer usability (2)
  • cmake (2)
  • performance (1)
  • WIP (1)
  • CUDA (1)

Score: 10.9980918198067