# 6.0.2 | Released yyyy/mm/dd, [GitHub Release Link](https://github.com/ufz/ogs/releases/tag/6.0.2) ## Release notes The second release of ogs6 introduces Neumann boundary conditions and VTK result output. ### Features: - [Neumann boundary conditions](http://docs.opengeosys.org/docs/benchmarks/elliptic/groundwater-flow-neumann) - Refactored mesh property classes to [enable VTK output](https://github.com/ufz/ogs/pull/692) - Builds with MinGW (GCC) on Windows, see [Developer Guide](http://docs.opengeosys.org/docs/devguide/getting-started/prerequisites) and the new MinGW platform instructions - [Cross-compiling for Windows with MXE on Mac OS](http://docs.opengeosys.org/docs/devguide/advanced/cross-compiling) - [Support for new cross-platform IDE CLion](http://docs.opengeosys.org/docs/devguide/development-workflows/development-ides#clion) ### Fixes - Performance optimizations in VTK mesh conversion, [PR #695](https://github.com/ufz/ogs/pull/695) ### Infrastructure - Test runtime is monitored at Jenkins for [normal](https://svn.ufz.de:8443/job/OGS-6/job/Tests_Linux/) and [nightly large tests](https://svn.ufz.de:8443/job/OGS-6/job/Tests_Linux_Large/) - Utilities are build by separate Jenkins Jobs, e.g. [Win_Utils](https://svn.ufz.de:8443/job/OGS-6/job/Win_Utils/) ## Test examples  - Example 1: TODO ## Next steps ### In development - OGS#PETSc interface for parallel computing ### Planned - Parabolic solver -------------------------------------------------------------------------------- # 6.0.1 | Released 2015/03/02, [GitHub Release Link](https://github.com/ufz/ogs/releases/tag/6.0.1) 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: - Getting started tutorial: http://docs.opengeosys.org/docs/quickstart - Descriptions of selected benchmarks: http://docs.opengeosys.org/docs/benchmarks - Source code access: https://github.com/ufz/ogs - Developer guide: http://docs.opengeosys.org/docs/devguide ## 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