This chapter includes descriptions of the nonblocking collective communication subroutines that are available for parallel programming. These subroutines, which have a prefix of MPE_I, are extensions of the MPI standard. They are part of IBM's implementation of the MPI standard for PE. Review A sample MPI subroutine before proceeding to better understand how the subroutine descriptions are structured.
The MPI-2 extensions related to collective communication are now available for all MPI blocking collectives. The MPE_I non-blocking collectives have not been enhanced.