V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MPI
       Message Passing Interface (SMP, Cluster)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MPI
       Multiprocessor Interconnect Bus


The Free On-line Dictionary of Computing (30 December 2018):

Message Passing Interface
MPI

    A de facto standard for
   communication among the nodes running a parallel program
   on a distributed memory system.  MPI is a library of
   routines that can be called from Fortran and C programs.
   MPI's advantage over older message passing libraries is that
   it is both portable (because MPI has been implemented for
   almost every distributed memory architecture) and fast
   (because each implementation is optimised for the hardware
   it runs on).

   [Address?]

   (1997-06-09)