Vasp 5.4.4 Installation May 2026

make veryclean

Cause: Fortran 2008/2018 strictness in newer compilers (gfortran 10+, ifx).
Solution:

GNU builds work, but Intel compilers with MKL typically give 20-30% better performance for VASP. vasp 5.4.4 installation

wget https://registrationcenter-download.intel.com/akdlm/irc_nas/19079/l_BaseKit_p_2023.0.0.25537_offline.sh
sudo sh ./l_BaseKit_p_2023.0.0.25537_offline.sh -a --silent --eula accept
# Then similarly for HPC kit (includes Intel MPI and MKL)

source /opt/intel/oneapi/setvars.sh