# Quick Start

We describe here in details an example of cubic boron nitride "**BN**" on how to run
structure prediction by CALYPSO.
Here, VASP code was used for geometric structure optimization and total energy calculations.
Please go to your working directory and do:

```bash
mkdir BN
cd BN
cp path-to-package/Examples/BN/* ./
```

The following necessary files should appear in the working directory:

:input.dat: The CALYPSO input file
:calypso.x: The executable file for structure prediction
:submit.sh: Executable shell scripts to submit a job for geometry optimization
:INCAR_*:   VASP input file
:POTCAR:    VASP pseudopotential file

Now you are ready to run the program:

```bash
./calypso.x > caly.log &
```

After a successful run of the program, several VASP output files and a new directory
named **`results`** will be generated in your working directory.