Note: Not all FLEXnet utilities are shipped with MATLAB. Under Windows, all FLEXnet utilities shipped with MATLAB (except lmgrd) come packaged as a single executable called lmutil. Here is a flow chart view of the license request process with the above steps labeled:
The license module in the application (e.g., MATLAB) grants or denies usage of the feature, as appropriate. The vendor daemon checks to see if any licenses are available and sends a grant or denial message back to the client. The client establishes a connection with the specified vendor daemon and sends a request for a license. lmgrd determines which machine and port correspond to the master vendor daemon and sends that information back to the client. The client establishes a connection with the license manager daemon on the server (lmgrd) and tells it which vendor daemon it needs to talk to. The license module in the client application (e.g., MATLAB) finds the license file, which includes the hostname of the license server node and port number of the server with which the license manager daemon, lmgrd, communicates. Uncounted licenses do not use a license manager rather, license management depends solely on the contents of the license file.When you run a counted FLEXnet-licensed application, the following occurs: 
Counted means that a license manager is needed to allow for license checkout. Here is a breakdown of the license request process:įLEXnet-licensed applications can either be counted or uncounted.
Application program (e.g., MATLAB) - communicates with the vendor daemon to request a license for check out. 
Linux flexlm license manager software#
It is created by the software vendor (e.g., The MathWorks) and edited during installation
License file (license.dat) - contains licensing data within a text file. Vendor daemon (MLM) - keeps track of the number of licenses checked out and who has each license by accessing memory and granting or denying license checkouts. License manager daemon (lmgrd) - makes initial contact with client application (e.g., MATLAB) and starts and restarts vendor daemons. There are four main components to FLEXnet: The criteria for checking out a license can vary according to how the license management is configured.įlexera Software Inc. This involves a server-client relationship that requires a client machine to first successfully check out a license from the server in order for an application to be used on that client machine. It allows software to "float" on a network and not be tied to one particular machine. Section 1: What Is FLEXnet? Who Makes FLEXnet?įLEXnet is a popular license management tool on the market today.
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