RPN_COMM_swapns

RPN_COMM

(RPN_COMM_swapns)

SUBROUTINE RPN_COMM_swapns (nwen,wden,nwes,wdes,
     %          nwin,nwrn,wdin,nwis,nwrs,wdis,periody,
     %          status)

ARGUMENTS

nwen,nwes	Number of words to send to north/south	integer	I
wden,wdes	Array of words to send to north/south	integer	I
nwin,nwis	Number of words to receive from north/south	integer	I
wdin,wdis	Array of words to receive from north/south	integer	O
periody	N-S periodicity	logical	I
nwrn,nwrs	Number of words received from north/south	integer	O
status	Error flag	integer	O

DESCRIPTION

North/south exchange of data: wden is sent to his north neighbor and received in wdin. Exchanges are made using non-blocking MPI_ISEND and MPI_IRECV. When the exchange is terminated (checked with MPI_WAIT), it exits immediately.

Note: the number of received words can be different of what was expected. One can check with nwrn/s values after the call. They are obtained with MPI_GET_COUNT.

EXAMPLE

call RPN_COMM_swapns (nwen,wden,nwes,wdes,
% nwin,nwrn,wdin,nwis,nwrs,wdis,periody,
% status)

RPN_COMM

(RPN_COMM_swapns)

ARGUMENTS

DESCRIPTION

EXAMPLE

SEE ALSO