From ALICE Documentation
Some programs solve problems that can be broken up into pieces and distributed across multiple computers that communicate over a network. This strategy often delivers greater performance. ALICE has compute nodes on two separate networks, Infiniband (100Gbps). To see these performance increases, your application or code must be specifically designed to take advantage of these low latency networks.
To request a specific network, you can add the following line to your resource request:
where <network> is IB.