If FLUENT has been started without a version argument (e.g., 3d), you can select the solver after startup. Starting the solver in this manner allows you to run it on a remote processor. By default, when you type the command to start FLUENT and include the version, you actually start Cortex (a process that provides the user interface and graphics for FLUENT) and Cortex then starts FLUENT on the same processor on which Cortex is running. When you type the startup command without specifying a version, you just start Cortex. This gives you the opportunity to specify a different processor on which to run the solver.
Note the following limitations when you run FLUENT on a remote Linux/UNIX machine from a local Windows machine: