Under CopyrightMachado, RuiRuiMachadoRotaru, TiberiuTiberiuRotaruRahn, MirkoMirkoRahnBartsch, ValeriaValeriaBartsch2022-03-073.3.20162016https://publica.fraunhofer.de/handle/publica/29764010.24406/publica-fhg-297640This document provides simple guidelines on the process of porting an MPI application to GPI-2. Part I of this document introduces GPI-2, its main arguments and then takes the reader through a simple framework with distinct steps towards a GPI-2 application. Part II provides a simple example, a MPI code solving the Laplace equation on a three dimensional regular grid.en003006519report