---
project: HPC DNS Post-Processing Fortran Core
summary: Tridiagonal compact finite difference solver, mathematical operators, and MPI-IO drivers.
author: Google DeepMind Team & Ignis
version: 1.0.0
src_dir: ./code
output_dir: ./docs/fortran_api
exclude: **/pycompact/**
preprocess: true
display: public
---

# Fortran Core Documentation

Welcome to the Fortran Core Reference. This section contains automatically generated docs from `FORD` for the high-order compact difference solver modules:

- **[[Compact]]**: Compact finite difference scheme equations.
- **[[m_calculate]]**: spatial derivatives and chemical kinetics.
- **[[m_arrays]]**: post-processing field allocation.
- **[[m_openmpi]]**: MPI parallel domain wrapper.
- **[[m_parameters]]**: input loaders and physical values.
- **[[post]]**: main driver pipeline.