Contents Chapter 7: Running the Mechanical APDL Application on Arm Systems | Print page 7.1. Message Passing Interface (MPI) SupportMechanical APDL provides Open MPI 4.1.8 within the package. Open MPI is the default MPI and the only MPI available in the package. « Chapter 7: Running the Mechanical APDL Application on Arm Systems 7.2. Get Started »