MOAB Release 5.2.0

Posted by Vijay Mahadevan in MOAB, News, SIGMA

Table of Contents

• Features
• Enhancements
• Fixes

Features

• PR #424, #445, #461, #462, #467, #474: Significant feature additions to improve the TempestRemap-based mapping weights generation workflow
  – Expose both Kd-tree and advancing front intersection
  – Verifications of mapping weight generation for very high-res cases at scale
  – Improve mbconvert to transform TR supported file formats to MOAB h5m and vice-versa
  – Ability to write out the computed remapping weights in parallel to a h5m file is now supported. A h5mtoscrip utility tool to convert the h5m file to SCRIP format is available.
  – Add an extra verification option for maps computed with mbtempest to validate projection weights
  – Improve master-slave partitioner
  – Performance enhancements: Several optimizations in the iMOAB implementation and OnlineMap computation routines have been added
• PR #437: Allow ability to support empty parts in parallel mesh handling
• PR #454, #464, #475: Enable coupling and consistent remap of data between discrete meshes and point cloud representations
  – A new ParCommGraph class is now available to store communication patterns between MPI groups
  – Feature additions support rendezvous coupling that has been tested for multi-way transfer between atmosphere, ocean, land components
• PR #465: Add a new KDtree-based intersection to replace advancing front intersection when dealing with source grids with holes
• PR #471: Introduce a concept of master-slave partitioning method using Zoltan RCB algorithm
  – This feature provided a significant speedup for offline remapping calculations on a sphere
  – TODO: Test similar ideas for other coupled computational problems
• PR #482: Domain file reader in NetCDF format to support E3SM integration
• PR #485: Extensive CMake configuration updates to support Windows platform builds
• PR #486: Adding a new option for area computations using Gauss quadrature based integration instead of spherical excess

Enhancements

• PR #419: Cache the latest facet for RayHistory in OBB tree
• PR #420, #435: Global ID default value (unset) is now -1, while DOFs related to Global ID start from 1
• PR #429: Option for consistent (multiple) ghost layers in thin partitions
• PR #438: Improve coexistence of LAPACK and Eigen3 in configurations
• PR #442: MBTR – Remove assumption that FV DoF numbering is 0-based (now 1-based for both FV/SE)
• PR #444, #449: CMake build improvements related to MPI, HDF5, OSX
• PR #446: Option to reset Global IDs during partitioning
• PR #455: Enforce MOAB flags to add c++0x flags if supported
• PR #463: Update default download option for NetCDF(4.6.3), HDF5 (1.10.1)
• PR #468: PyMOAB bindings to set_connectivity
• PR #475: Improve regridding intersection robustness
• PR #483: Add a new download option to sync large files from FTP site to avoid bloating repository with static meshes
• PR #488: Enforce uniform formatting of the entire source repository with clang-format tool with updated coding guidelines

Fixes

• PR #414, #434: HDF5 writer fixes for polyhedral meshes, to address issues #99 and #110
• PR #415: Fixing index overflow in SQIJ partition for structured meshes
• PR #417, #421, #469: Python bindings fixes and compliance to Python 3 standards
• PR #430: Fixing HDF5 regression test issues
• PR #431, #453, #466, #480: Changes to conform to evolving TempestRemap API co-development
• PR #450: Fix seqfault in Range destructor
• PR #472: HDF5 file descriptor initialization that resolves some issues in VisIt-MOAB plugin
• PR #473: Minor fix for Tqdcfr reader