### 3.12 Sending Octave variables

Loadable Function: psend (value, connections)

  Send the value in variable value to all parallel cluster machines specified by connections.

  This function can be called both at the client machine and (with `reval`) at a server machine. See `pconnect` for a description of the connections variable, and `pserver` for a description of this variable (named `sockets`) at the server side. connections can contain all connections of the network, a subset of them, or a single connection. The machine at which `psend` was called (client or server), if contained in the connections variable, is ignored.

  The value sent with `psend` must be received with `precv` at the target machine. Note that values can be sent to each machine, even from a server machine to a different server machine.

  If `psend` is called at the client machine, a corresponding `precv` should have been called before at the target machine, otherwise the client will hang if value contains large data (which can not be held by the operating systems socket buffers).

  See also: pconnect, pserver, reval, precv, sclose, parallel_generate_srp_data, select_sockets.