|License||commercial VASP license; see text|
|Citing||see VASP license and documentation|
|Graphical Interface||No (only via 3rd party tools like VMD)|
The Vienna Ab initio Simulation Package (VASP) is an atomic scale materials modelling program for e.g. electronic structure calculations and quantum-mechanical molecular dynamics. Although the focus is on simulation of periodic structures like solids and surfaces, molecular structures can be simulated as well by the so-called supercell approach. VASP is a plane wave code using PAW (projector augmented wave) pseudopotentials. Exchange and correlation effects are described based on DFT (density functional theory) as well as Hartree-Fock and post Hartree-Fock methods.
Some features of VASP:
- Functionals: LDA, GGAs, metaGGAs, Hartree-Fock, Hartree-Fock/DFT hybrids
- Dynamics: Born-Oppenheimer molecular dynamics
- Relaxation: Conjugate gradient, quasi-Newton or damped molecular dynamics
- Transition state search: Nudged elastic band methods, climbing dimer method
- Linear response to electric fields: Static dielectric properties, Born effective charge tensors, piezoelectric tensors
- Green's function methods: GW quasiparticles
- Magnetism: Collinear and non-collinear, spin-orbit coupling
- Linear response to ionic displacements: Phonons, elastic constants, internal strain tensors
For more information on VASP please
visit What is VASP?.
2 License and citing
VASP is available only for groups with a valid group license. Furthermore every scientist has to be registered with his group VASP license at the VASP group in Vienna before we can grant access to the VASP binaries or pseudopotentials.
In future publications of work performed using VASP, the use of the software shall be properly acknowledged, e.g. in the form:
The calculations have been performed using the ab-initio total-energy and
molecular-dynamics program VASP (Vienna ab-initio simulation program)
developed at the Institut für Materialphysik of the Universität Wien [1,2].
 G. Kresse and J. Furthmüller, Phys. Rev. B 54, 11169 (1996).
If the PAW-version is used, an additional reference shell be made to:
 G. Kresse and D. Joubert, Phys. Rev. 59, 1758 (1999).
3 Versions and availability
A list of versions available on the bwUniCluster and bwForClusters can be obtained from the Cluster Information System: CIS Information on VASP
On the command line interface (CLI) of a particular bwHPC cluster a list of available VASP versions can be inquired as followed
$ module avail chem/vasp
4.1 Loading the module
You can load the default version of VASP with the command
$ module load chem/vasp
There are no dependencies to other modules. All required components,
e.g. Intel MPI, are included in the VASP module.
4.2 Program binaries and input files
After setting up the primary input files INCAR, POSCAR, KPOINTS and POTCAR in the job's directory, one can call the vasp shell script
In interactive mode the script defaults to the serial version of VASP. For command line options please see
$ vasp -help
The pseudopotential file POTCAR can be created with help of the shell script
Please see the manual
$ vasp-pot -help
before using vasp-pot.
4.3 Parallel computing and disk usage
Depending on the resources requested from the queueing system, the vasp script automatically detects whether to run the serial or the MPI-parallel version.
If running on multiple nodes, the job must run within a common job directory visible on all nodes. So in case of multi-node jobs, using /tmp/$USER is no option.
To lower the disk I/O demands of the VASP jobs one should add the options
LWAVE = .FALSE.; LCHARG = .FALSE.; LVTOT = .FALSE.
$ module help chem/vasp
4.4 Queueing system example
See qeueuing system example input file as referenced in
$ module help chem/vasp
4.5 Interactive parallel example
The example shows, how to load the vasp module, extract some example input files and run vasp on an interactive node using 4 cores:
$ module load chem/vasp $ mkdir ~/VASP-example-job/ $ cd ~/VASP-example-job/ $ tar -zxvf $VASP_EXA_DIR/bench.Hg.tar.gz $ vasp -n 4
5 Version-specific information
For specific information about version X, see the output of command
$ module help chem/vasp/X
To load and use a specific VASP version X, use the command
$ module load chem/vasp/X