Purpose: Gather collective with additional flow control, so as to be more robust when used with high process counts.
Method: If flow_cntl optional parameter < 0: use MPI_Gather >= 0: use point-to-point with handshaking messages and preposting receive requests up to max(min(1,flow_cntl),max_gather_block_size) ahead if optional flow_cntl parameter is present. Otherwise, fc_gather_flow_cntl is used in its place. Default value is 64.
Author of original version: P. Worley Ported from CAM: P. Worley, Jan 2010
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer(kind=pio_offset), | intent(in) | :: | sendbuf(:) | |||
| integer, | intent(in) | :: | sendcnt | |||
| integer, | intent(in) | :: | sendtype | |||
| integer(kind=pio_offset), | intent(out) | :: | recvbuf(*) | |||
| integer, | intent(in) | :: | recvcnt | |||
| integer, | intent(in) | :: | recvtype | |||
| integer, | intent(in) | :: | root | |||
| integer, | intent(in) | :: | comm | |||
| integer, | intent(in), | optional | :: | flow_cntl |