Gurobi license issues in a cluster

[Xiaodi Deng]

Hi, all!

    We have a computing cluster in our university. The way I usually work with it is:

1) log onto its LOG-IN NODE

2) compile my code

3) submit a PBS job schedule file

4) wait for the queue before my code runs on some other COMPUTING NODE, which is randomly assigned to me among hundreds of them.

5) receive output

    I have my Gurobi license retrieved on the LOG-IN NODE, and the code with Gurobi calls in it runs fine in LOG-IN NODE. 

    But it produces an exception like " HostID mismatch (licensed to fc4a232e, hostid is 13efcd09) " every time I try to run it on COMPUTING NODE bu submitting a PBS file. And the hostid in the message varies every time since I have different COMPUTING NODE to run my work. I guess that might be the reason it won't work properly.

    Is this the limitation of the free academic license? Or is there a way to deal with it?

    Thanks a lot!

    The Gurobi part of my code only uses one processor. It's other parts of the code need a cluster to do heavy computation.

Regards,

Xiaodi

[T.]

Ask your administrator to obtain a free academic floating license from gurobi support. He then has to set up a license server. After that you can use up to 1024 instances of gurobi simultaneously on the cluster.

[Roman Istomin]

Thanks. How to connect to the floating license once it is there?

[Daniel Espinoza]

This should help:

http://www.gurobi.com/documentation/7.5/quickstart_linux/creating_a_token_server_cl.html

Best,

Daniel