Changelog of v1.1.2

This is a very minor update, mainly incorporating some recommendations we received during the review process of the mumax⁺ paper.

• Fix show_regions after 3D upgrade.
• Use more appropriate error in exchange tests.
• Update README and documentation variously.

Changelog of v1.1.1

New features

• plot_field function replaces show_field and show_layer functions with much more functionality. (See #96 for an extended summary.)
• Add inspect_field function.
• Superball shape

Quality of life

• Windows installation should work again, including better instructions. (Thanks to @jplauzie for his help via #93.)
• extent property of System/Magnet
• Change the HSL color map so it is now continuous within the color sphere. (It is now slightly different from mumax³)
• show_field_3D no longer assumes normalized fields.
• Add get_rgb and both get_rgb and get_rgba are more user-friendly and more general.

Bug fixes

• Fix radius to diameter typo in Sphere shape.
• Fix InterParameter writing at wrong memory with small grids.
• Avoid crash in thermal noise kernel if msat == 0.
• Antiferromagnetic exchange field strength between two sublattices is now 0 if either sublattice has msat == 0.

Misc.

• Fix vortex position typo in standard problem 3 example.
• Add Google analytics to website.

Changelog of v1.1.0

New Features

• non-collinear antiferromagnets
• viscous damping
• traction boundary conditions
• Add more accurate calculation of stray field kernels using an asymptotic expansion.
• 3D voronoi tessellation
• magnetic force microscopy (with example)
• show_regions functionality.

Quality of life

• Let StrayField accept all Magnet classes.
• Add pyOVF to the environment for proper reading and writing of .ovf files.
• documentation website

Bug fixes

• Cast 1 to real for proper single/double handling in voronoi.cpp.
• Fix exchangeAssuredZero function.
• Fix energy calculation for non-trivial geometries.

Misc.

• Slight optimization of field, force and strain initialization.
• Add colon to ku2 and kc3 parameter names.
• Reference paper2025 tag in README and documentation.

Changelog of v1.0.2

New features

• Add rigid strain (with example and tests).
• Add frozen spins (with tests).
• Enhance Voronoi tessellation:
  • settable seed
  • user-accessible regionOf function
  • PBC
  • Let user define center indices using a function.

Quality of life

• Allow writing data to file during solve.
• Add meshgrid property to Magnet class.
• Add option to use callable function to set time term mask of Parameter (with tests).
• Allow for easy AFM demag switch in AFM.
• Bind is_sublattice to Python side.
• Add optional tqdm progress bar to solve function.

Bug fixes

• Change uint to unsigned int.
• Fix adaptive corrFactor.
• Change afmex_nn and afmex_cell warnings to function with functions and arrays.
• Fix wrong pointer bug in dynamic CuVectorParameter vectorAt function.
• Fix bench example.
• Fix bug in dmiAssuredZero.
• Make k_fieldGetRGB memory safe.
• Account for rectangular grids in tessellator.
• Use a default sensible timestep when starting adaptive timestepping if torque is zero.
• Update C++ examples and let pip install them.
• Improve accuracy of traction-free BC to 2nd order which improves stability.
• Account for zero msat of sub2 neighbor in AFM DMI calculation.

Tests

• Added proposed DMI standardproblem tests in 1D, 2D and 3D.
• Added similar tests for AFM.
• Rigid strain tests
• Frozen spins tests
• Parameter time term mask tests

Misc.

• Change cij to Cij.
• Mention double precision in README.
• Fix typo in AFM Relaxer.
• Add B1 and B2 warnings.
• Add valueAt to CuVectorParameter.
• Tweak magnetoelastic_dispersion_afm example.
• Clean up twodomain config.
• Fix typo in standardproblem 2.
• Remove unnecessary transpose in magnetoelastic example.
• Change displacement representation from scatter to lines in example.
• Expand skyrmionracetrack example to show more than just the final result.
• Fix docstring units.
• Add rigid strain example based on paper.

Full Changelog: v1.0.1...v1.0.2

Small update to update CMake, Python and pybind11:

• CMake 3.16 ti 4.0.0, with minimum of 3.24 for clean automatic CUDA architecture detection
• Python 3.8 to 3.13
• pybind11 ~v2.4 to v2.13.6

Features include:

• multiple magnets
• antiferromagnets and ferrimagnets
• total DMI tensor
• magnetoelastics
• antiferromagnetic magnetoelastics

See the following paper for a full description.

mumax+: extensible GPU-accelerated micromagnetics and beyond

https://arxiv.org/abs/2411.18194