Getting started#
FDTDX has two layers worth learning separately: a declarative scene model and a JAX-native time-stepper. Start with installation, then build one small scene before tuning grids or differentiation.
1 · Install
Set up the validated fork, select a JAX backend, and confirm the accelerator.
2 · First simulation
Define a domain, place physics objects, run the time stepper, and read a metric.
3 · Mental model
Understand immutable objects, placement constraints, arrays, parameters, and compilation.