Configuring FLUENT V6.2 Network Parallel
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1. Install FLUENT (it is only necessary to install FLUENT on one of the computers in the cluster) 2.Set the FLUENT.INC Environment Variables. a.Select the Start Menu, Programs, Fluent Inc Products, Fluent 6.2.16, Set Environment. Choose YES to Modify. 3.Edit the environment variables so they don't have a local installation path defined, for example, C:Fluent.Inc, as all computers you will be are using to run FLUENT in network parallel must have access to the FLUENT.INC directory on the Host Node. 4.Click on Start, Settings, Control Panel, System. Choose the Advanced Tab, choose Environment Variables. 5.Edit the FLUENT_INC variable using the network path format followed by the computer name where FLUENT is installed. 6.Edit the Path variable using the network path format followed by the computer name where FLUENT is installed. NOTE: If multiple users will be logging in to the cluster then copy the FLUENT_INC variable to the System Variables section. Append the Path variable to the System Path variables section. 7.Share the FLUENT.INC directory (You must share the FLUENT.INC directory so that all computers on the cluster can "see" this shared directory through the network). Sharing a Directory `Right-click the C:FLUENT.INC directory. `Choose Sharing and Security `Choose the Sharing tab and select Share this folder on the network. `You can keep the default Share name or change it. `Click OK. NOTE: If you don't see "Sharing and Security" on the menu, contact your Systems Administrator. 8.Install the appropriate network communicator. In order to run FLUENT parallel across a network you must install and configure one of the following FLUENT supported network communicators. MPICH is the preferred and recommended Message Passing Interface. Click on the appropriate links below for specific installation instructions. Once the communicator has been installed and configured on each computer in the cluster you are ready to start FLUENT Network Parallel. MPICH (Message Passing Interface) See Installing and Configuring MPICH (see Related Solution 2019275) RSHD (Remote Shell Daemon) See Installing and Configuring RSHD (see Related Solution 2019617) Starting FLUENT Network Parallel IMPORTANT NOTE: If you will be compiling UDF's while running FLUENT Network Parallel please read this important document, "Compiling and Loading User Defined Functions" (see Related Solution 2017096) as there are extra steps that must be taken prior to compiling the UDF. 1.Create a host file using a plain text editor like Notepad and save it in a working directory. You should not be starting FLUENT in the FLUENT.INC directory. 2.Open up a Command Prompt 3.CD to a working directory. It should be the same directory that the host file was saved in. 4.Type: fluent version -pcomm `pathcomputernamesharename -cnf=host.txt -tnprocs Where version would be 2d, 3d, 2ddp or 3ddp (dp stands for double precision) Where -pcomm specifies the remote shell or message passing software you are using. For example, if you are using: COMMUNICATOR USE MPICH -pnmpi RSHD -pnet Where -path specifies the Computer Name of the computer that FLUENT is installed and shared on and the sharename that was assigned when the directory, FLUENT.INC was shared. You must use the network path format when running Fluent Network Parallel. Where -cnf= specifies the host file. If you are not working in the directory where the host file is located you will need to type the full path to this file. Where -tnprocs specifies the number of processors to use, for example, -t2 indicates that you want to use two processors. The actual command might look like this if you are using RSHD as the communicator: fluent 3d -pnet -pathcomputer1fluent.inc -cnf=hosts.txt -t2 The actual command might look like this is you are using MPICH as the communicator fluent 3d -pnmpi -pathcomputer1fluent.inc -cnf=host.txt -t2 If you are using RSHD as the communicator you can add or remove computers from within FLUENT. This is not available if you are using MPICH. 1.In FLUENT select the Parallel Menu, Network, Configure 2.In the Hostname text box type the name of the computer that you want to run on (you don't need to add a username) 3.Click the Add button. (Repeat that step for each additional computer you want to run on) 4.Once you have added the desired compute nodes in the Available Hosts box choose the compute nodes, under Spawn Count. Increase the number of processors as desired. 5.Click Spawn. |
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