FPLO-9 is running only on Unix-like systems.
The code is written in C and Fortran90, the user interface to handle input data is a curses application.

The code is tested on the Linux (i386 and x86_64) with the Intel Fortran compiler version 10.1 and 11.1.

Additionally you need some tools for useful add-ons:

• xmgr or xmgrace (to visualize the DOS)
• gv (to have a look on crystal structure and bandstructure)
• perl5 interpreter (for developing the code)

To get the Intel Fortran90 compiler please check http://www.intel.com/ or ask your local vendor.

Dependent on the size of systems and the accuracy you need FPLO-9 needs a lot of memory. For most calculations 1-2GB RAM are enough, but there are cases where you need more. Bear in mind that Linux on i386 is a 32-bit system, where three GB is the upper limit of memory, which can be allocated by one process. For binaries created with ifort, there is a limit of 2.8GB memory per process if there is no array larger than 1GB. If there is such a large array, at most 2GB RAM can be allocated. If you need more you have to switch to a 64-bit system.

To install FPLO-9 you need about 30MB file space.