Introduction

This report describes in details the format and structure of OOFEM text input file. Input file can be created by any available text editor or can be generated by some conversion program or by some FEM pre-processor.

Some parts of this document are related parallel version of the code (POOFEM). These parts are distinguished by typing the text in sans serif font family. In a parallel mode a set of input files must be provided, each one for particular process and related partition. The input file corresponding to some partition is called partition input file. Its name is composed from two parts. The fist part (referred as base name) is user-defined. The second part (called partition name), divided from first part by full-stop, is particular partition rank number. The partitions are numbered from zero. It is assumed, that all partitions input files have the same base name. The partition name is appended automatically to input file name, user provides only base name on input. On the other hand, the partition name is not appended to output file name, as specified in output file record (see section 4).

The parallel version requires the unique global numbering for dof managers (nodes) and elements. The global numbering is necessary to link partitions together. However, the dof managers and optionally elements at interpartion boundaries, should be explicitly marked, in order to distinguish different type of relations between their remote counterparts (see further).