sledgehamr v1.1.0

New Features:

• Leapfrog integrator
• FFT zero-padding
• FFTs and gravitational wave spectra can now be computed on GPUs
• Gravitational wave spectrum output can be binned into bins of size k_IR
• Location of 2D slices can now be selected
• FOPT project: new piecewise potential
• New project: Axion only EOM

Changes:

• pySledgehamr: 3D output now read using 64-bit
• AMReX-based integrators temporarily disabled due to breaking changes in the AMReX repo
• Fix issues with the upsampling of input fields from hdf5 files
• FFTs now computed via the new AMReX FFT interface rather than SWFFT
• No CUDA-aware MPI for now

sledgehamr v1.0.2

Changes:

• Writing of level data optimized for GPUs.
• Gravitational wave spectrum computation sped up massively through the pre-computation of projectors.
• Prevent crashes during a rare edge case related to shadow level creation after a restart.
• Handle case where max_level has been reduced by the user during a restart and is now below finest_level. All levels beyond max_level will be ignored in the checkpoint file.
• Remove boost system and boost filesystem dependency as it is no longer needed.
• FirstOrderPhaseTransitions: Add additional time-dependent cut-off to freeze out gravitational waves.
• AxionStringPreevolution: Ability to evolve from a truly random initial state that is generated in-place.
• pySledgehamr: Print warning message if gravitational wave spectrum cannot be read properly (e.g. if calculation did not finish in time).

Sledgehamr v1.0.1

Changes: Small fix to accommodate changes in recent amrex versions.

Sledgehamr v1.0.0

First release!