HPL_recv man page
HPL_recv — Receive a message.
int HPL_recv( double * RBUF, int RCOUNT, int SRC, int RTAG, MPI_Comm COMM );
HPL_recv is a simple wrapper around MPI_Recv. Its main purpose is to allow for some experimentation / tuning of this simple routine. Successful completion is indicated by the returned error code HPL_SUCCESS. In the case of messages of length less than or equal to zero, this function returns immediately.
- 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.
- SRC (local input) int
On entry, SRC specifies the rank of the sending process in the communication space defined by COMM.
- RTAG (local input) int
On entry, STAG specifies the message tag to be used for this communication operation.
- COMM (local input) MPI_Comm
The MPI communicator identifying the communication space.
HPL_send (3), HPL_sendrecv (3).