What’s New in GetFEM 5.5

The main contribution of this version is a new scripting language interface to the MUMPS sparse system solver.

Released version, 2026/06/15.

The main changes are:

  • Fixes in derivation of Interpolate expressions in GWFL

  • Support importing 13- and 14-node pyramid elements from gmsh

  • Support importing 15- and 18-node prism elements from gmsh

  • Allow for multiple right hand side vectors in MUMPS solves

  • New MUMPS context object for reusable factorization, and access to all MUMPS options

  • Fix performance bottleneck in parsing long GWFL expressions

  • A lot of codebase maintenance and improvements

  • Support for fully automated MS Windows builds through github Actions