CHANGELOG.md

dune-uggrid 2.10 (unreleased)

• Remove deprecated AllocEnvMemory and FreeEnvMemory. They were wrappers of standard malloc and free.

• Remove deprecated Mark and Release. Use MarkTmpMem and ReleaseTmpMem instead.

• Remove deprecated HeapAllocMode and its flags FROM_BOTTOM and FROM_TOP. They lost any influence, as we use the system heap.

• Remove deprecated DDD_InfoProcList, use DDD_InfoProcListRange instead.

• Remove deprecated DDD_IFOneway, use method overload with context as first argument instead.

dune-uggrid 2.9 (2022-11-25)

• The dune-uggrid module does not set the preprocessor flag HAVE_UG anymore. Use HAVE_DUNE_UGGRID instead.
• Several unused data members have been removed from the UGGrid data structure. The grids will behave as before, but the memory footprint should be a bit smaller.

dune-uggrid 2.8 (2021-09-06)

• Added support for All_All communication on facets.
• Removes support for _2 and _3 macros.
• Remove support for XDR.

dune-uggrid 2.7.0 (2019-12-20)

• Multiple grids are now also allowed in the parallel implementation [!96 (merged)]: !96 (merged)

• The TET_RULESET compile-time option has been renamed to DUNE_UGGRID_TET_RULESET and is enabled by default. It is no longer necessary to provide the RefRules.data file. !134 (merged)

• Header files moved below dune/uggrid. Headers are installed in the same sub-directory and no longer into ug/. This breaks compatibility to UG 3.13. !137 (closed)

dune-uggrid 2.6.0 (2018-04-03)

• Transfer of element data during load balancing is supported. See !55 (merged) and dune-grid!172
• dune-uggrid has gained a new build-time switch TET_RULESET (default is off). When set, UGGrid will use a better algorithm to compute green closures for red--green grid refinement. This better algorithm, which involves a complete rule set for tetrahedral elements, leads to refined grids with smaller closures. It also fixes at least one bug. Beware: when TET_RULESET is set, UG wants to read a table from the file RefRule.data (in uggrid/lib/ugdata). This file needs to be in the current directory, otherwise UGGrid will abort. The long-term plan is to compile the data file into the binary, and make the new closure algorithm the default.
• Many now unused parts of UG have been removed from the source.
• The memory management of UG got a major overhaul:
  • As malloc/free memory management was used for a long time, we removed the manual heap management of UG.
  • DYNAMIC_MEMORY_ALLOCMODEL was used by default, now we removed the switch and cleaned up all #ifdefs
  • The FROM_BOTTOM/FROM_TOP flags during memory allocation didn't have any influence, as we use the system heap. The enums were deprecated and the interface updated.
  • unified the different memory allocation methods
  • removed user data from the MULTIGRID structure
  • removed virtual heap management
• The InsertElement algorithm has been completely rewritten. Up to now the user had to ensure that enough memory was allocated in order to create a lookup for the InsertElement neighbor search. This was necessary to ensure an O(n) complexity. Otherwise loading large meshes was prohibitively slow. The new implementation uses modern C++ data structures. To speed up the neighbor search we maintain a hash-map (i.e. unordered_map) from a face to an element. The new implementation is as fast as the old one, can dynamically adapt to the mesh size and uses less memory.

See the list of all dune-uggrid 2.6 merge requests for minor changes not mentioned here.

dune-uggrid 2.5.0 (2017-12-18)

• dune-uggrid is now a DUNE module that will only contain UG's grid manager in the future.
• Switch to CMake build system.

UG Release 3.13.0 (01-03-2016)

• Rename macros _2 and _3 to UG_DIM_2 and UG_DIM_3 respectively, to avoid clashes with symbols of the same name in libc++.
• Add file .gitlab-ci.yml to drive the Gitlab continuous integration features
• Remove an obsolete XCode project file, and an obsolete mystery file 'conf.h'
• Fix an out-of-bounds array access reported by the gcc sanitizer

UG Release 3.12.1 (11-05-2015)

• Fix bug in Makefile.am which prevented building of tarballs.

UG Release 3.12.0 (11-05-2015)

The major change in this release is the official transformation of the entire code base to C++. While pretty much everybody (read: all Dune users) has compiled UG as C++ for many years now, the code itself was still officially C. In the 3.12.0 release all .c files have now been renamed to .cc, and UG will hence build as C++ by default. Thanks to Christoph Grüninger.

• Remove code that redefines standard types on specific architectures (Fixes Debian build problems of dune-grid)
• Fix various problems when compiling with clang
• Fix the return type of a few methods that don't actually return anything.
• Removal of dead and redundant code
• Minor cleanup and beautifications in ddd

UG Release 3.11.1 (2-12-2014)

This is mainly a bugfix release. As the only behavioral change, memory management now defaults to the operating system heap, rather than the built-in heap. This eases debugging and appears to speed up the code.

• Make method CreateLine return void instead of INT. This fixes a segfault when compiling with clang. Thanks to Carsten Gräser.
• More build system and other cleanup

UG Release 3.11.0 (12-06-2014)

This release contains several bugfixes related to dynamic load balancing. It also contains many important cleanup patches (kudos to Ansgar Burchardt).

• Properly set SideVector VCOUNT fields after load balancing (Dune FlySpray 810: https://dune-project.org/flyspray/index.php?do=details&task_id=810 )
• Bugfix: Always identify MIDNODEs to the proclist of the father edge
• Bugfix: Initialize EDIDENT for edges for 3d and 2d before refinement
• Bugfix: Call the RestrictPartitioning method more often before adaptive refinement
• Remove the Fortran interface to the DDD library
• Remove left-overs from the Chaco load balancer which used to be contained in the UG source tree
• Remove lots of code related to obsolete architectures and the old build system
• Remove old, non-free version of netgen
• Constification in the DDD subsystem
• Various build-system improvements