Grenoble:Network

Network: Global | Grenoble | Lille | Luxembourg | Lyon | Nancy | Nantes | Rennes | Sophia | Strasbourg | Toulouse

Overview of Ethernet network topology

Network devices models

• gw: Dell S5296F-ON

More details (including address ranges) are available from the Grid5000:Network page.

Omni-Path Topology

Nodes of the dahu, yeti and lama clusters are connected to Omni-Path switches (Intel Omni-Path 100Gbps), beside the Ethernet network.

This Omni-Path network interconnects both the Grid'5000 Grenoble nodes and the nodes of the HPC Center of Université Grenoble Alpes (Gricad mésocentre).

The topology used is a fat tree with a 2:1 blocking factor:

• 2 top switchs
• 6 leaves: switchs with 32 downlinks to nodes and 8 uplinks to each of the two top switches (48 ports total)

All 32 dahu nodes are connected to a same leaf. The 4 yeti nodes are connected to another leaf. TBC for lama.

Other ports are used by nodes of the HPC center of UGA.

A generated topology (using the output of opareports -o topology :

IP Range

• Computing : 172.16.16.0/20
• Omni-Path : 172.18.16.0/20
• Virtual : 10.132.0.0/14