understanding the log file

[HIMANI]

Please specify what is the meaning of dE, dH, E, force steps and other parameters in a log file?

[Jess Wellendorff]

E: electronic total energy
force: Hellman-Feynman force

In the self-consistent field loop (dE nad dH are minimized):
dE:  change of total energy
dH: change of Hamiltonian matrix elements

[Anders Blom]

E and dE in the selfconsistent loop is actually not total energy, because that's rather expensive to compute in LCAO, so we don't do that. Instead this is the "band structure energy", i.e. the sum of the energies of all occupied states, essentially.

dH is indeed the change in the Hamiltonian, and more specifically the largest matrix element change.