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| HPL_sdrv(3) | HPL Library Functions | HPL_sdrv(3) |
NAME
HPL_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 );
DESCRIPTION
HPL_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).| December 2, 2018 | HPL 2.3 |
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