To start the parallel version of FLUENT using command line options, you can use the following syntax in a Command Prompt window:
\share_name specifies the computer name and the shared network name for the Fluent.Inc directory in UNC form.
For example, if
FLUENT has been installed on
computer1 and shared as
fluent.inc, then you should replace
share_name by the UNC name for the shared directory,
You can use a plain text editor such as Notepad to create the hosts file. The only restriction on the filename is that there should be no spaces in it. For example, hosts.txt is an acceptable hosts file name, but my hosts.txt is not.
Your hosts file (e.g., hosts.txt) might contain the following entries:
| The last entry must be followed by a blank line.
If a computer in the network is a multiprocessor, you can list it more than once. For example, if computer1 has 2 CPUs, then, to take advantage of both CPUs, the hosts.txt file should list computer1 twice:
computer1 computer1 computer2
For example, the full command line to start a 3d parallel job on the first 4 computers listed in a hosts file called hosts.txt is as follows:
fluent 3d -t4 -cnf=hosts.txt -path\\computer1\fluent.inc
The default interconnect ( ethernet) and the default communication library ( mpich2) will be used since these options are not specified.
| 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.
The supported interconnects for dedicated parallel ntx86 and win64 Windows machines, the associated MPIs for them, and the corresponding syntax are listed in Tables 31.2.1- 31.2.3:
|MPI||Syntax (flag)||Communication Library||Notes|
|mpich2||-mpi=mpich2||MPICH2 MPI||(1), (2)|
|ms||-mpi=ms||Microsoft MPI||(1), (2)|