Why are there different versions of Gurobi available on Instant Cloud?

There are different Gurobi versions displayed in the Instant Cloud Manager web interface because the Compute Server is backward compatible with previous versions.

The Actual Server Version displayed in the Machines window is the version of the Gurobi Compute Server that is currently running on the server. By default, a new pool uses the latest version (currently 10.0.1):

Clients can use any Gurobi versions that are supported by the 10.0.1 version of Compute Server: 9.0.0, 9.0.1, 9.0.2, 9.0.3, 9.1.0, 9.1.1, 9.1.2, 9.5.0, 9.5.1, 9.5.2, 10.0.0 and 10.0.1. The versions that are actually in use are displayed as Runtimes.

The Gurobi version used by a client is listed as the Runtime in the Jobs window for a particular job:

The version displayed in the OPTIONS tab of the Machines window is the Gurobi version requested for the pool. This is currently listed as 8.0 when it should be 10.0.1:

We are currently in the process of fixing this.