NAME¶

TAU_TRACE_RECVMSG - Traces a receive operation

SYNOPSIS¶

C/C++:

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

Fortran:

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

DESCRIPTION¶

TAU_TRACE_RECVMSG traces a receive operation where tag represents the type of the message received from the source process.

NOTE: When TAU is configured to use MPI (-mpiinc=<dir> -mpilib=<dir>), the TAU_TRACE_RECVMSG 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_SENDMSG(3)