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HPL_recv(3)                  HPL Library Functions                 HPL_recv(3)


HPL_recv - Receive a message.


#include "hpl.h" 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). HPL 2.1 October 26, 2012 HPL_recv(3)

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