Technical details

Snowstorm cluster

	Per Node	Total *
Machine	1 HP rx4640	100 HP rx4640
Processors	4 1,3 GHz Itanium2 or	240 1,3 GHz Itanium2
	4 1,5 GHz Itanium2	160 1,5 GHz Itanium2
Memory	4 GB	400 GB Distributed
Storage	144 GB	14 TB Distributed + 2 TB centralized
Interconnect	SCI Interconnect**/ Infiniband***/ Gigabit Ethernet	SCI Interconnect**/ Infiniband***/ Gigabit Ethernet
Performance	20,8 GFlops/s or	2,20 Teraflops/s
	24 GFlops/s

*) Snowstorm also consists of 2 interactive nodes (HP rx5670), each with 4 1,3 GHz Itanium2 processors, making the aggregated performace of the cluster to 2,24 TFlops/s.

**) 25 of the Snowstorm cluster nodes have SCI Interconnect installed.

***) All nodes are connected to the infiniband interconnect using Topspin host channel adapters and a Voltaire ISR 9288 switch.