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CHANGELOG.md

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Release notes

6.0.5 (in preparation)

Features:

  • Axis aligned bounding box:
    • Is now a from the right half-open interval.
    • Removed template from class declaration.
  • New configuration tree parser
    • Checks configuration parameters more strictly, automatically prints error/warning messages.
    • Requires Boost >= 1.56 because of boost::optional with move semantics.

Infrastructure

  • Minimum Boost version: 1.56.0, #943
  • Boost requirement is now header-only, #940

Documentation

Fixes

6.0.4

Features:

  • Parallel computing framework for FEM by using PETSc, which also includes
    • Parallel input of partitioned mesh data.
    • Parallel output of solutions by using pvtu data format.
  • New data structures for mesh properties are used everywhere replacing Element's value member.
  • The penalty method to impose first-type boundary conditions was substituted with a non-penalty method for LIS and Eigen linear solvers.
  • Support for multiple nodal variables is extended to the boundary conditions, the sparsity pattern.
  • Passing of linear solver options from the project files is now possible.
  • The global matrix and global vector type of indices is consistent with the linear solver library being used.

Infrastructure

  • Added CMake option OGS_CPU_ARCHITECTURE, #858, downloadable binaries build by Jenkins should now run on more CPUs
  • Added CMake options for Boost, VTK and Eigen (OGS_LIB_BOOST, ...) to specify if libs are searched on the system first, then build them locally (Default), or you can specify to just use system libs (System) or force a local build (Local)
  • Added CMake options for enabling Clang sanitizer:
    • OGS_ADDRESS_SANITIZER
    • OGS_UNDEFINED_BEHAVIOR_SANITIZER
  • The zlib library is removed from ThirdParty directory.
  • A LIS solver interface using Eigen's sparse matrices is now available through CMake option OGS_USE_EIGENLIS.
  • CMake configuration uses ccache if available.

Documentation

Fixes

  • Fix all ogs-internal warnings on all OS.
  • Move eigen solver compute call to solve(); different fix for 0237275

6.0.3

Features:

  • Mesh properties are now used for:

    • heterogeneous "initial conditions" (actually a start solution vector for the elliptic problem).
    • spatially heterogeneous hydraulic conductivity values in the groundwater flow process.

  • First steps towards time dependent problems: Time loop integration for processes is provided.

  • Interpolation of nodal quantities on elements using shape functions.

  • Mesh generator can create surface meshes according to a given function

  • Utilities:

  • MoveGeometry

  • The DOF table handles now all of the provided element types: Hex 8 and 20, Line 2 and 3, Prism 6 and 15, Pyramid 5 and 13, Quad 4, 8, and 9, Tet 4 and 10, Triangle 3 and 6.

  • Eigen linear solver library can be used for solution of the linear systems of equations.

  • Implemented OctTree for fast searching points and nodes

  • Volumetric and surface grid

  • ElementSearcher NodeSearcher improvements

  • Generalized the computation of rotation matrix to xy

Fixes

  • FEFLOW interface supports element sets now.
  • Reduce compilation times by using forward declarations and removing unnecessary includes and using explicit template instantiation for often required classes.
  • GMSH2OGS: fixed bug in cases GMSH mesh does not contain line elements
  • CreateBoundaryConditionsAlongPolylines: fixed bug concerning the GeoLib and point ids.
  • PointVec corrected point id map
  • Shape interface creates polylines in a consistent state

Infrastructure

Test examples

  • Test case: groundwater flow in the Unstrut catchment (model consists approximately of 9e6 hexahedral cells)
    • Simulations using homogeneous and heterogeneous hydraulic conductivity
    • Integrated rivers as Dirichlet type boundary conditions
    • Integrated groundwater recharge (spatialy homogeneous) as Neumann boundary condition

unstrut_heterogeneous_rivers_top_layer_diff_recharge-no_recharge

Next steps

The next big step will be the implementation of a parallelization scheme using PETSc library

In development

  • OGS#PETSc interface for parallel computing
  • Solving of time dependent problems

Planned

  • Implementation of a linear parabolic pde solver
  • Extending the linear elliptic solver to non-linear problems

6.0.2

| Released on 2015/06/15, GitHub Release Link

Release notes

The second release of ogs6 introduces Neumann boundary conditions and VTK result output.

Features:

Fixes

  • Performance optimizations in VTK mesh conversion, PR #695
  • Improve layered prism mesh construction
  • Fix a lot of warnings on gcc/clang/msvc compilers improving the code

Infrastructure

Test examples

Next steps

In development

  • Heterogeneous fields (for e.g. hydraulic conductivity parameters)
  • Octree data structures for fast searches
  • OGS#PETSc interface for parallel computing

Planned

  • Parallelization scheme using PETSc library
  • Extending the linear elliptic solver to non-linear problems

6.0.1

| Released 2015/03/02, GitHub Release Link

The 6th version of OpenGeoSys (OGS) is under way. After single and coupled FORTRAN modules in ROCKFLOW 1+2, the C version 3 with dynamic data structures, the object-oriented C++ parallelized version 4, completed with data integration and visualization tools by version 5; ogs6 - as an open source project - is aimed at performing on supercomputing platforms and providing complete workflows for solving of coupled multi-field problems in real world applications. The major paradigms of ogs6 are being developer-friendly, performing, and user-friendly.

Important links:

Release notes

The first version ogs6 is dedicated for elliptic problems.

Features:

  • Basic structures of processes
  • Mathematical operations are based on Eigen3 library
  • Linear solvers: DenseMatrix with Gauss elimination, and LIS (http://www.ssisc.org/lis/)
  • XML based IO
  • Standard finite element method (FEM)
  • Available element types: lines, triangles, quads, hexahedra
  • Dirichlet boundary conditions
  • Linear elliptic solver (e.g. Groundwater flow) for scalar quantities in homogeneous media

Fixes

  • DenseMatrix Gauss algorithm pivoting

Test examples

  • Example 1: Unit square (access)
  • Example 2: Unit cube (access): has 1000 hexahedra elements with Dirichlet boundary conditions (u=1|x=0) and (u=-1|x=1)

Next steps

In development

  • OGS#PETSc interface for parallel computing (02/2015*planned)
  • Neuman boundary conditions (03/2015*planned)

Planned

  • Parabolic solver