Node

Defines a single computing node that is contained in the described cluster. In general this corresponds to a single computer, but it is also possible to create multiple nodes on a local machine by using the 127.0.0.x IP address with x from 1 to 255. It is not possible to create multiple nodes on the same remote computer, however.

• address
  non-empty string

  The IP address or the DNS name of the node. If the address is a DNS name, the name resolution is delegated to the operating system and might include additional network traffic to the DNS host. If the node ought to be the local machine either 127.0.0.x with x from 0 to 255, or localhost (which corresponds to 127.0.0.1) can be used.

• port
  integer [0, 65535]

  The port at which this node is available at to the server. Please note that operating systems have restricted behavior when trying to open ports lower than a fixed limt. For example, Unix does not allow non-elevated users to open ports < 1024. As a convention, SGCT usually uses ports staring at 20400, but this is an arbitrary convention without a specific reason.

• datatransferport (optional)
  integer [0, 65535]

  If this value is set, a socket connection is opened at the provided port that can be used by the application to transmit data between the server and the clients using the dataTransfer* callbacks and transferData function of the NetworkManager. If no value is specified this function will not work and the callbacks will never be called. Please note that operating systems have restricted behavior when trying to open ports lower than a fixed limt. For example, Unix does not allow non-priviledged users to open ports < 1024.

• swaplock (optional)
  boolean

  Determines whether this node should be part of an Nvidia swap group and should use the swap barrier. Please note that this feature only works on Windows and requires Nvidia Quadro cards + G-Sync synchronization cards. For more information on swap groups, see link. The default value is false.

• windows (optional)
  array of Windows

  Specifies windows that are used to render content into. There can be an arbitrary(-ish) number of windows for each node and they all will be created and initialized at start time. Each window has at least one Viewport that specifies exactly where in the window the rendering occurs with which parameters.