Q. Describe buffer of receiving process?
MPI_Gather (Sendaddr, Scount, Sdatatype, Receiveaddr, Rcount, Rdatatype,Rank, Comm):
'Using this function process with rank' rank in group comm. receives personalized message from all processes (including self) and sorted message (in accordance with the rank of sending processes) are stored in the receive buffer of process. First three parameters state buffer of sending process and next three describe buffer of receiving process.