To enable automatic segmentation of a distributed application program.

In a method for segmenting a computer program including a plurality of subprograms able to transfer information and situated on a first processing site, it is characterized by that the computer program includes steps (E310, E320, E327) of performing automatic determination about data to indicate transfer of at least a part of the information among pieces of information to be processed by the subprograms for at least one of the subprograms and a step (E350) of allocating the subprograms to a second processing site according to the data.