Basic HTML version of Foils prepared 19 September 98

Foil 40 Interpretation of Returned Message Status

From MPI Message Passing Interface Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
In C status is a structure of type MPI_Status
  • status.source gives actual source process
  • status.tag gives the actual message tag
In Fortran the status is an integer array and different elements give:
  • in status(MPI_SOURCE) the actual source process
  • in status(MPI_TAG) the actual message tag
In C and Fortran, the number of elements (called count) in the message can be found from call to
call MPI_GET_COUNT (IN status, IN datatype,
OUT count, OUT error_message)
  • where as usual in C last argument is missing as returned in function call

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sun Apr 11 1999