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31.2.2 Starting Parallel FLUENT on a Windows System Using the Graphical User Interface

To run parallel FLUENT using the graphical user interface, type the usual startup command without a version (i.e., fluent -t2), and then use the Select Solver panel (Figure  31.3.1) to specify the parallel architecture and version information.

File $\rightarrow$ Run...

Figure 31.2.1: The Select Solver Panel

Perform the following actions:

1.   Under Versions, specify the 3D or 2D single- or double-precision version by turning the 3D and Double Precision options on or off, and turn on the Parallel option.

2.   Under Options, select the interconnect or system in the Interconnect drop-down list. The Default setting is recommended, because it selects the interconnect that should provide the best overall parallel performance for your dedicated parallel machine. For a symmetric multi-processor (SMP) system, the Default setting uses shared memory for communication.

If you prefer to select a specific interconnect, you can choose either Ethernet/Shared Memory MPI, Myrinet, Infiniband, or Ethernet via sockets. For more information about these interconnects, see Table  31.2.1, Table  31.2.2, and Table  31.2.3.

3.   Set the number of CPUs in the Processes field.

4.   (optional) Specify the name of a file containing a list of machines, one per line, in the Hosts File field.

5.   Click the Run button to start the parallel version. No additional setup is required once the solver starts.


The first time that you try to run FLUENT in parallel, a separate Command Prompt will open prompting you to verify the current Windows account that you are logged into. Press the <Enter> key if the account is correct. If you have a new account password, enter in your password and press the <Enter> key, then verify your password and press the <Enter> key. Once the username and password have been verified and encrypted into the Windows Registry, then FLUENT parallel will launch.

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