Intel® MPI Library User's Guide for Linux* OS
There are two different licensing options:
Intel® MPI Library Runtime Environment (RTO) license. This license includes tools you need to run MPI programs including runtime process managers, supporting utilities, shared (.so) libraries and documentation. The license includes everything you need to run Intel® MPI Library-based applications and is free and permanent.
Intel® MPI Library Software Development Kit (SDK) license. This license includes all of Runtime Environment components as well as the compilation tools: compiler commands (mpiicc, mpicc, and so on.), files and modules, static (.a) libraries, debug libraries, trace libraries, and test sources. This license is fee-based, with the following options:
evaluation
named-user
floating
For licensing details refer to the EULA or visit http://www.intel.com/go/mpi.