All the DFT examples may be done with either ESPRESSO or PARATEC.
Each directory's README tells you how to run it and suggests number of processors and walltime for parallel calculations.
Needed pseudopotentials are contained in DFT/pseudos.

Note: ESPRESSO examples are compatible with Quantum ESPRESSO 5.0 and later versions.
If you want to run them with Quantum ESPRESSO 4.3.2 or earlier version, you should modify the input files for pw.x.
Change "calculation = 'bands'" to "calculation = 'nscf'" and "CELL_PARAMETERS" to "CELL_PARAMETERS cubic".

This directory contains example runs for a variety of physical systems:

silicon: a bulk semiconductor
  Includes PREBUILT tarball of DFT inputs from PARATEC.
  Includes ref directories containing sample output from ESPRESSO and BerkeleyGW steps.
  Available for EPM as well as DFT.
  Shows how to use Wannier90 and sig2wan.x to obtain a GW bandstructure by interpolation.

Si2_bs: another silicon example
  Shows how to use inteqp to obtain a GW bandstructure by interpolation.

Si2_sapo: another silicon example
  Shows how to perform iterative Davidson diagonalization in SAPO,
    requires pw2bgw with write_vscg capability as in espresso-5.0.2.

Zn2O2: a bulk semiconductor
  Includes ref directories containing sample output from ESPRESSO and BerkeleyGW steps.
  Shows how to use inteqp to obtain a GW bandstructure by interpolation.
  Shows how to perform iterative Davidson diagonalization in SAPO,
    requires pw2bgw with write_vscg capability as in espresso-5.0.2.
  Shows how to use valence only charge density in the Generalized Plasmon Pole model,
    requires pw2bgw with calc_rhog capability as in espresso-5.0.2.

sodium: a bulk metal

swcnt_5-5: (5,5) single-walled carbon nanotube, a metallic 1D system

swcnt_8-0: (8,0) single-walled carbon nanotube, a semiconducting 1D system
  Has runs of plotxct with visualization by volume.py and surface.x.

CO: a small molecule

benzene: a slightly larger molecule
  Includes run of gsphere.py and SIESTA.

There are also examples in the Visual directory for the scripts there.
The testsuite runs may also be consulted, although they are not realistic calculations.
