Everything on Legacy Systems

Fortran's dominance in HPC is sustained by legacy libraries like LAPACK, which are deeply integrated into scientific workflows. Replacing this code is impractical due to the high cost and risk of migration.

Impact: Organizations relying on scientific simulations must maintain Fortran expertise to ensure operational continuity and avoid costly re-engineering efforts.

— from Fortran's Enduring Role in HPC and Scientific Computing · Engineering Kiosk· Mar 17, 2026