HPL_broadcast - Man Page

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 (3), HPL_all_reduce (3), HPL_barrier (3), HPL_min (3), HPL_max (3), HPL_sum (3).

Referenced By

HPL_all_reduce(3), HPL_barrier(3), HPL_max(3), HPL_min(3), HPL_reduce(3), HPL_sum(3).

February 24, 2016 HPL 2.2 HPL Library Functions