TAU_TRACE_SENDMSG(3)

Name
TAU_TRACE_SENDMSG - Traces a receive operation

Synopsis

C/C++:

TAU_TRACE_SENDMSG(int tag, int source, int length);

Fortran:

TAU_TRACE_SENDMSG(integer tag, integer source, integer length);

Description

TAU_TRACE_SENDMSG traces an inter-process message communication when a tagged message is sent to a destination process.

NOTE: When TAU is configured to use MPI (-mpiinc=<dir> -mpilib=<dir>), the TAU_TRACE_SENDMSG and TAU_TRACE_SENDMSG macros are not required. The wrapper interposition library in

    $(TAU_MPI_LIBS)

uses these macros internally for logging messages.

Example

C/C++ :

    if (pid == 0) {
      TAU_TRACE_SENDMSG(currCol, sender, ncols * sizeof(T));
      MPI_Send(vctr2, ncols * sizeof(T), MPI_BYTE, sender,
               currCol, MPI_COMM_WORLD);
    } else {
      MPI_Recv(&ans, sizeof(T), MPI_BYTE, MPI_ANY_SOURCE,
               MPI_ANY_TAG,MPI_COMM_WORLD, &stat);
      MPI_Get_count(&stat, MPI_BYTE, &recvcount);
      TAU_TRACE_RECVMSG(stat.MPI_TAG, stat.MPI_SOURCE, recvcount);
    }

Fortran :

    call TAU_TRACE_RECVMSG(tag, source, length)
    call TAU_TRACE_SENDMSG(tag, destination, length)

See Also

TAU_TRACE_RECVMSG(3)