Re: [QE-users] question about last steps of vc-relax

2023-09-04 Thread Nicola Marzari via users
Thanks Paolo! This is a chance to remind everyone that there are sets of carefully tested pseudopotentials (PBE and PBEsol) with suggested cutoffs on https://materialscloud.org/sssp ; these cover the entire periodic table. There are two choices - efficiency or precision. They have been verif

Re: [QE-users] question about last steps of vc-relax

2023-09-04 Thread Paolo Giannozzi
On 9/4/23 11:09, Konstantin Glazyrin wrote: An example - target relaxation pressure 600 kbar: 1 - total   stress  (Ry/bohr**3)                   (kbar)     P=  600.65 - last run of structure relaxation 2 - total   stress  (Ry/bohr**3)                   (kbar)     P=  484.28 - final s

[QE-users] question about last steps of vc-relax

2023-09-04 Thread Konstantin Glazyrin
Dear All, I was playing with one structure 'vc-relax', tested that it converged to the pressure I was aiming for. If I understand correctly, after structural relaxation QE (e.g. step 1) runs an additional 'scf' run (step 2) and recalculates stuff and in both steps recalculates pressure. It is inte