Learn FORTRAN with Real Code Examples
Updated Nov 20, 2025
Architecture
Compiled language
Supports procedural & object-oriented paradigms
Array-oriented design
Parallel processing via OpenMP/MPI
Modules for namespace management
Rendering Model
Source code compiled into machine code
Executable runs on CPU
Modules provide namespace and reusability
Intrinsic functions optimized by compiler
Parallel loops distributed on threads/processors
Architectural Patterns
Procedural programming
Modular programming via modules
Array and matrix-oriented design
Parallel execution (OpenMP/MPI)
Scientific computation pipelines
Real World Architectures
Climate & weather modeling
Computational physics
Aerospace simulations
Finite element analysis
High-performance numerical pipelines
Design Principles
Optimize numerical computations
Array-oriented design
Efficient compiled execution
Backward compatibility
Support for parallelism
Scalability Guide
Vectorize loops
Use parallelism with OpenMP/MPI
Modularize code for HPC clusters
Minimize I/O bottlenecks
Leverage optimized libraries (BLAS/LAPACK)
Migration Guide
Convert legacy Fortran 77 to Fortran 90/2003
Modularize old code into modules
Use modern parallel libraries
Replace fixed-format I/O with free-format
Integrate with Python/C for modern pipelines