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HPL_send(3)                  HPL Library Functions                 HPL_send(3)


HPL_send - Send a message.


#include "hpl.h" int HPL_send( double * SBUF, int SCOUNT, int DEST, int STAG, MPI_Comm COMM );


HPL_send is a simple wrapper around MPI_Send. Its main purpose is to allow for some experimentation / tuning of this simple routine. Successful completion is indicated by the returned error code MPI_SUCCESS. In the case of messages of length less than or equal to zero, this function returns immediately.


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. DEST (local input) int On entry, DEST specifies the rank of the receiving process in the communication space defined by COMM. STAG (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_recv (3), HPL_sendrecv (3). HPL 2.1 October 26, 2012 HPL_send(3)

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