IGM - IGM v3.1.1

The highlight of this release is a refactor of the enthalpy module, as well as the addition of various horizontal discretizations for the ice-flow solver.

Improvements and Updates

Modules

• enthalpy:
  • Refactoring: the componenets are now located in separate folders
  • Discretization: independent vertical discretization for enthalpy (Nz_E)
  • BC: option to force basal temperature at pressure melting point
  • Config: more detailed structure with numerics, solver, thermal, arrhenius, drainage, till sections
  • Tests: Kleiner et al. (2015) Exp A & B benchmarks, unit tests
• iceflow:
  • Discretization: new horizontal discretization framework (basis_horizontal); with Q1 FE, P1 FE, central FD (legacy discretization, remains default)
  • Cost components: adapted to new horizontal discretization framework and new enthalpy grid
  • Renaming: vertical_discr to discr_v, vert_basis to basis_vertical, staggered_grid to basis_horizontal
• vert_flow:
  • New version 3: based on precomputed discretization matrices

Code maintenance

• Included missing __init__.py file in enthalpy utils folder to resolve PyPI installation
• Fixed version for NetCDF compatibility

Contributors: @tgregov, @brfi3983.

Cryosphere - Glacier and Ice Sheets - Python
Published by tgregov 3 months ago

IGM - IGM v3.1.0

Disclaimer: This release is currently broken (with PyPI) due to import issues with the enthalpy module. Please use v3.1.1 or later.

The highlight of this release is a new unified framework for the ice-flow module, accessible via method=unified.

This framework consolidates the existing solver and emulation approaches under a single interface, using the mapping parameter to select the desired mode: identity corresponds to the legacy solver mode, while network corresponds to the legacy emulated mode. The unified framework provides greater flexibility and simplifies long-term maintenance. The legacy solver and emulated modes will eventually be deprecated and removed.

Improvements and Updates

Modules

• iceflow:
  • Solver: unified framework allowing for more flexible and maintainable ice-flow solver
  • Networks: new neural architectures (FNO, MLP, CNN)
  • Inputs: defaults to normalization of inputs (within unified)
  • Discretization: new flexible vertical discretization for velocity
  • Optimizers: sequential option, halt/convergence criterion
  • BC: update frozen boundary condition for new vertical discretization
  • Performance: uses tf.function for forward pass of the ice-flow model
  • Memory: work in progress for single/double precision support
  • Display: cleaner visualization using rich
  • Renaming:sia to molho, w to theta, gradient to grad, warm_up_it to nbit_warmup
  • Tests: ISMIP-HOM suite, BCs, vertical discretization, data preparation
  • Documentation: update config files and website
• data_assimilation:
  • Work in progress
• instructed_oggm:
  • Adapted to IGM 3.0

Code maintenance

• CI/CD: Added pandoc, mkdocs-bibtex dependencies for documentation

Contributors: @tgregov, @shrrosier, @brfi3983, @jouvetg.

Cryosphere - Glacier and Ice Sheets - Python
Published by tgregov 3 months ago

IGM - IGM v3.0.1

Improvements and Updates

Modules

• iceflow:
  • Boundary conditions
  • Vertical discretization
  • Progress bar
  • ζ coordinate corrections
  • Tests for L-BFGS optimizer
• write_vtp:
  • New VTK output module for particle visualization
• data_assimilation:
  • Work in progress
  • Integration of Optuna features
• oggm_shop:
  • Added EPSG attribute to output (J. Fürst)
  • Adapted to IGM 3.0 (#41)

Code maintenance

• Installation:
  • Removed specific Python version requirement (#24)
• CI/CD:
  • Fixed PyPI packaging with proper __init__.py files

Cryosphere - Glacier and Ice Sheets - Python
Published by brfi3983 3 months ago

IGM - IGM v3.0.0

IGM v3.0.0

Check at more detailed list of changes to transition from version 2 to 3 at : https://igm-model.org/latest/about/transition-IGM-2-to-3/

Improvements and Updates

• IGM can now deploy multiple runs on a single GPU (if memory allows it)
• Integration with hydra
• Improved the code layout and structure
• Added various modules
  • Damage
  • Stress
  • Improved lagrangian particle tracking

Breaking changes

• argparse is now replaced with hydra
• documentation is now moved from wiki to https://igm-model.org/latest/
• json has been replaced with yaml

Bug fixes

Other changes

Cryosphere - Glacier and Ice Sheets - Python
Published by brfi3983 9 months ago

IGM - v2.2.3

IGM v2.2.3

Bug fixes and other changes

• Final release before /feature/hydra branch is merged into main

Cryosphere - Glacier and Ice Sheets - Python
Published by brfi3983 9 months ago

IGM - v2.2.2

Cryosphere - Glacier and Ice Sheets - Python
Published by jouvetg almost 2 years ago

IGM - v2.2.1

Cryosphere - Glacier and Ice Sheets - Python
Published by brfi3983 over 2 years ago

IGM - v2.2.0

Cryosphere - Glacier and Ice Sheets - Python
Published by brfi3983 over 2 years ago

IGM - v2.1.0

Cryosphere - Glacier and Ice Sheets - Python
Published by jouvetg over 2 years ago

IGM - v2.0.4

This release includes renaming of parameter and module

Cryosphere - Glacier and Ice Sheets - Python
Published by jouvetg over 2 years ago

IGM - v2.0.0

Cryosphere - Glacier and Ice Sheets - Python
Published by jouvetg over 2 years ago