HPL_sdrv(3) HPL Library Functions HPL_sdrv(3)NAMEHPL_sdrv - Send and receive a message.
SYNOPSIS
#include "hpl.h"
int HPL_sdrv( double * SBUF, int SCOUNT, int STAG, double * RBUF, int
RCOUNT, int RTAG, int PARTNER, MPI_Comm COMM );
DESCRIPTIONHPL_sdrv is a simple wrapper around MPI_Sendrecv. Its main purpose is
to allow for some experimentation and tuning of this simple function.
Messages of length less than or equal to zero are not sent nor
received. Successful completion is indicated by the returned error
code HPL_SUCCESS.
ARGUMENTS
SBUF (local input) double *
On entry, SBUF specifies the starting address of buffer to be
sent.
SCOUNT (local input) int
On entry, SCOUNT specifies the number of double precision
entries in SBUF. SCOUNT must be at least zero.
STAG (local input) int
On entry, STAG specifies the message tag to be used for the
sending communication operation.
RBUF (local output) double *
On entry, RBUF specifies the starting address of buffer to be
received.
RCOUNT (local input) int
On entry, RCOUNT specifies the number of double precision
entries in RBUF. RCOUNT must be at least zero.
RTAG (local input) int
On entry, RTAG specifies the message tag to be used for the
receiving communication operation.
PARTNER (local input) int
On entry, PARTNER specifies the rank of the collaborative
process in the communication space defined by COMM.
COMM (local input) MPI_Comm
The MPI communicator identifying the communication space.
SEE ALSO
HPL_send (3), HPL_recv (3).
HPL 2.1 October 26, 2012 HPL_sdrv(3)
