This is the distribution of the Quantum ESPRESSO suite of codes (ESPRESSO: opEn-Source Package for Research in Electronic Structure, Simulation, and Optimization)
Quick installation instructions for the impatient, using "make":
([] means "optional"):
./configure [options]
make all
"make" alone prints a list of acceptable targets. Optionally,
make -jN runs parallel compilation on N processors.
Link to binaries are found in bin/.
Using "CMake":
mkdir ./build
cd ./build
cmake [-DCMAKE_INSTALL_PREFIX=/path/to/install] ..
make [-jN]
[make install]
"make" builds all targets. Link to binaries are found in build/bin.
If make install is invoked, directory CMAKE_INSTALL_PREFIX
is prepended onto all install directories.
For more information, see the general documentation in directory Doc/, package-specific documentation in */Doc/, and the web site http://www.quantum-espresso.org/. Documentation for developers can be found on Wiki page on gitlab.
- PWscf: structural optimisation and molecular dynamics on the electronic ground state, with self-consistent solution of DFT equations;
- CP: Car-Parrinello molecular dynamics;
- PHonon: vibrational and dielectric properties from DFPT (Density-Functional Perturbation Theory);
- TD-DFPT: spectra from Time-dependent DFPT;
- HP: calculation of Hubbard parameters from DFPT;
- EPW: calculation of electron-phonon coefficients in metals;
- PWCOND: ballistic transport;
- XSpectra: calculation of X-ray absorption spectra;
- PWneb: reaction pathways and transition states with the Nudged Elastic Band method;
- GWL: many-body perturbation theory in the GW approach using ultra-localised Wannier functions and Lanczos chains.
The following libraries have been isolated and partially encapsulated in view of their release for usage in other codes as well:
- UtilXlib: performing basic MPI handling, error handling, timing handling.
- FFTXlib: parallel (MPI and OpenMP) distributed three-dimensional FFTs, performing also load-balanced distribution of data (plane waves, G-vectors and real-space grids) across processors.
- LAXlib: parallel distributed dense-matrix diagonalization, using ELPA, SCALapack, or a custom algorithm.
- KS Solver: parallel iterative diagonalization for the Kohn-Sham Hamiltonian (represented as an operator),using block Davidson and band-by-band or block Conjugate-Gradient algorithms.
- LRlib: performs a variety of tasks connected with (time-dependent) DFPT, to be used also in connection with Many-Body Perturbation Theory.
- upflib: pseudopotential-related code
Since Feb.2021 this repository also works for GPU's (currently only NVidia). See file README_GPU.md.
Quantum ESPRESSO is an open project: contributions are welcome. Read the Contribution Guidelines to see how you can contribute.
All the material included in this distribution is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
These programs are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.