HPL_broadcast HPL 2.2 Library Functions February 24, 2016


HPL_broadcast Broadcast operation.


#include "hpl.h"

int HPL_broadcast( void * BUFFER, const int COUNT, const HPL_T_TYPE DTYPE, const int ROOT, MPI_Comm COMM );


HPL_broadcast broadcasts a message from the process with rank ROOT to all processes in the group.


BUFFER  (local input/output)          void *
        On entry,  BUFFER  points to  the  buffer to be broadcast. On
        exit, this array contains the broadcast data and is identical
        on all processes in the group.
COUNT   (global input)                const int
        On entry,  COUNT  indicates the number of entries in  BUFFER.
        COUNT must be at least zero.
DTYPE   (global input)                const HPL_T_TYPE
        On entry,  DTYPE  specifies the type of the buffers operands.
ROOT    (global input)                const int
        On entry, ROOT is the coordinate of the source process.
COMM    (global/local input)          MPI_Comm
        The MPI communicator identifying the process collection.

See Also

HPL_reduce, HPL_all_reduce, HPL_barrier, HPL_min, HPL_max, HPL_sum.