Documentation

Client for a compute server

You have two options for indicating that a Gurobi program will act as a client of a compute server. If you are writing a program that calls the Gurobi C, C++, Java, .NET, or Python API's, these API's provide routines that allow you to specify the names of the compute servers. If you use these routines, then Gurobi licenses aren't required on the client.

Alternatively, you can set up a gurobi.lic file that points to the compute server. This option allows you to use a compute server with nearly any program that calls Gurobi, without the need to modify the calling program. The client gurobi.lic file should contain a line that looks like this:

COMPUTESERVER=machine1.mydomain.com,machine2.mydomain.com,machine3.mydomain.com

or like this:

COMPUTESERVER=192.168.1.100,192.168.1.101,192,168.1.102

This line provides a comma-separated list of Gurobi compute servers. If your compute servers use a password, you should also include a line that gives the password:

PASSWORD=cspwd

If you'd like to specify a job priority, you can add a line that gives an integer priority value:

PRIORITY=7

Higher priority jobs run before lower priority jobs. Please consult the Gurobi Compute Server section of the Gurobi Reference Manual for more information.

Note that if your client and server are both running on the same machine, you can add a COMPUTESERVER=localhost line to your gurobi.lic file. The compute server will ignore this line, and the client will ignore everything but this line. Another option in this situation is to create a separate gurobi.lic file for the client, and to set the GRB_LICENSE_FILE environment variable to point to this file.