MPI - AshokBhat/notes GitHub Wiki

About

• Message Passing Interface

FAQ

• What is MPI?
  • Message Passing Interface
  • A Standardized API
• What is the use?
  • To parallelize programs
  • To Communicate between processes
    • That model a parallel program 
    • Running on a distributed memory system. 
• Is it a Standard?
  • Yes - Defacto Industry Standard
  • Not an ISO or IEC standard
• What does it standardize?
  • Only the API - Not the implementation
• Who implements MPI?
  • Many
  • Free like OpenMPI
  • Commercial like Intel MPI
• What is part of the MPI standard?
  • Datatypes (e.g. MPI_Status)
  • Functions (e.g. MPI_Recv, MPI_Send)
• What is the current version?
  • Current Spec - MPI 3.0 (published in 2012).

See also

• OpenMP