Release v18.0-2

Major Features and Improvements

Reduced memory usage for large element counts
Improved interpolation performance on low-order geometries
Introduced uncoupled multisession simulations
Added gather scatter operations across sessions
Added gather scatter options across gtp-planes
Added par file support for postnek
Added parallel map file reader
Added mkSIZE script to automatically create SIZE file
Refactored object and boundary handling
Added RANS and mesh-smoother as experimental features
Added elapsedTime option for writeControl (in par)
Print runtime-statistics every 100 steps
Added support for GNU 8.x

Backwards-Incompatible Changes

Remove PPLIST symbol NEKNEK (not required anymore)
Rerun genmap to produce new map/ma2 file (no support for legacy version)
Change to modified interpolation routines (see interp.f)
Remove CB CTORQ from usr files (now part of OBJDATA included in TOTAL)

Known Bugs

Thanks to our Contributors

This release contains contributions from the Nek5000 core developers, as well as:

@ggiannako, @kmittal2, @kentO

We are also grateful to all who filed issues or helped resolve them, asked and answered questions, and were part of inspiring discussions.