PE includes an API that allows an application to retrieve the process IDs of all POE master processes, or home node processes, that are running on the same node. The information that is retrieved can be used for accounting, or to get more detailed information about the tasks that are spawned by these POE processes.
This appendix includes descriptions of the
parallel task identification API subroutines that are available for parallel programming. Review Chapter 12, A sample PE subroutine before proceeding to better understand how the subroutine descriptions are structured.