0.44.1 - 2025-11-07

Fixed

• Fix loop bounds for gcc+OpenMP compiler by @fmahebert in #324
• Fix compilation of atlas_fctest_fvm_nabla with NAG compiler (#326) by @wdeconinck in #330
• Set Eigen version to eigen@3 in CI to prevent 5.0.0 update

0.44.0 - 2025-10-06

Added

• Add Collect communication pattern by @wdeconinck in #301
• Add array::View interoperability with mdspan by @wdeconinck in #304
• Add support for pocketfft by @wdeconinck in #308, #320
• Improvement in spherical-polygon intersection by @sbrdar in #310
• Improvement in the conservative interpolation for general meshes by @sbrdar in #318
• Add Field::syncHost and Field::syncDevice by @wdeconinck in #311
• Add more GPU tracing capabilities for device allocations and host-device data transfers by @wdeconinck in #312
• Improve HaloExchange on_device, checking state flags by @wdeconinck in #313
• Update interpolation to support hicsparse backend by @l90lpa in #275
• Add Locator to find at which partition and at which index a global index is located by @wdeconinck in #317
• Add matrix halo exchange to "binning" interpolation method. by @odlomax in #315
• Introduce atlas-interpolations app by @wdeconinck in #321
• Support building of StructuredColumns with halos for grids with uneven points at poles e.g. N80 grid

Changed

• Move mdspan from atlas to pluto and update mdspan to latest by @wdeconinck in #303
• Update MeshBuilder API by @wdeconinck in #305

Fixed

• Fix out-of-range in RegionalLinear2D with FORTRAN feature disabled by @wdeconinck in #322
• Fix empty adjoint matrix for SphericalVector for scalar fields by @wdeconinck in #314
• Support CUDA 13.0 by @wdeconinck in #316
• Fix out-of-range in RegionalLinear2D with FORTRAN feature disabled by @wdeconinck in #322
• Allow BlockStructuredColumns to be used for MatchingPartitioner

0.37.0 - 2024-04-09

Added

• Add SphericalVector interpolation method using parallel transport (#163)
• Added arrayForEachDim method

Fixed

• Bugfix for regional grids with ny > nx
• Fix build for configuration setting ATLAS_BITS_LOCAL=64

Changed

• Use new LocalConfiguration baseclass functions in util::Config and util::Metadata instead of eckit::Value backdoor
• atlas_io is an adaptor library when eckit_codec is available (#181)

0.36.0 - 2023-12-11

Added

• Add TriangularMeshBuilder with Fortran API, so far for serial meshes only
• Add Fortran API for CellCollumns functionspace
• Add EqualAreaPartitioner which is geometry based rather than loadbalanced like EqualRegionsPartitioner

Fixed

• Compilation with Intel LLVM compiler
• Fix 180 degrees phase shift error in MDPI_gulfstream function

Changed

• Update install scripts
• Preparation for using eckit::codec as backend for atlas_io

0.35.1 - 2023-10-24

Added

• Don't output with output::Gmsh the triangle elements with wrong orientation when coordinates are "lonlat"
• Add control to skip Gmsh-output of triangles with too large edge length ratio
• Configurable geometry in KDTree
• Use configurable KDTree geometry in PointCloud
• atlas-grid-points executable to list grid points
• Allow constructor of atlas::io::ArrayShape with different integer types
• Support atlas_io with vector<std::int64_t>

Fixed

• Control FPE in StructuredColumns::checksum to avoid overflow and invalid in unimportant halo regions
• Fixes to MeshBuilder validate_mesh_vs_grid

Changed

• Use search radius in FiniteElement interpolation when mesh defines metadata to do so

0.35.0 - 2023-02-10

Added

• Add accessors for the GridBox class (MIR-632)
• Add FunctionSpace::partition() field
• Add configurable MPI communicator to data structures (#131)
• Add single precision support for fvm::Nabla
• Implement PointCloud parallel construction with halo_radius

Fixed

• Fix StructuredMeshGenerator for Gaussian grids that don't start at 0 degrees (ATLAS-375)
• Remove functionspace::Spectral via Trans initialisation (fixes #153)
• Enable MeshBuilder to set up the Grid (#152)
• Fix use of cmake option ATLAS_ENABLE_TRANS as in a bundle

Changed

• Cleanup long-standing temporary element types. API change but with deprecated old API
• Deprecated rename Mesh::nb_partitions -> Mesh::nb_parts
• Implement Delaunay triangulation using Qhull instead of CGAL but CGAL can still be enabled instead for now

0.34.0 - 2023-07-10

Added

• Fieldset::metadata (#126)
• Fieldset::adjointHaloExchange
• Field/Fieldset::clone method
• Functions to enable/disable FPE
• Add function to build mesh from imported connectivity data (#135)
• Implement field::for_each capabilities (#139)
• Introduce colon-separated environment variable ATLAS_PLUGIN_PATH to simplify plugin detection
• Introduce atlas::mdspan, contributed from github.com/kokkos/mdspan
• Add function Field::horizontal_dimension() -> std::vector<idx_t>
• Setup horizontal_dimensions() for BlockStructuredColumns fields
• Upgrade the halo exchange procedure for the function space 'PointCloud' (#120)

Fixed

• Enable latitude normalisation in KDTree coordinate transform (#140)
• Fix LocalView indexing bug for non-contiguous slices
• C++17 flag public propagation to downstream C++ CMake packages
• Fix cells().global_index() metadata for RegularLonLat grids in StructuredMeshGenerator
• BuildHalo: mark interior added cells as ghost

0.33.0 - 2023-04-03

Added

• Add support for StructuredPartitionPolygon with halo > 0
• Add information on atlas having PROJ support

Changed

• C++17 standard is now a requirement

Fixed

Fix StructuredInterpolation2D with retry for failed stencils

0.32.1 - 2023-02-09

Added

• Added (lon, lat) to (alpha, beta) transforms to cubed sphere projection

0.32.0 - 2023-01-23

Added

• Added BlockStructuredColumns FunctionSpace
• Added function SolidBodyRotation
• Added convenience Fortran constructors for ShiftedLonLat, SHiftedLon, ShiftedLat
• Support for more FunctionSpaces in various interpolation methods

Changed

• PolygonLocator now wraps around longitudes for non-matching domains
• StructuredMeshGenerator can generate meshes with partitions without elements
• SerialDistribution makes every MPI task have the entire mesh

Fixed

• Remove assertion for checking of empty mesh in NodeColumns FunctionSpace
• Gaussian latitudes can now be computed for very high resolution, without running out of memory.
• Interpolation to functionspaces with empty partitions