COMPUTE ATLAS Supercomputer supply-chain graph
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Parts/Interconnect/Cray Gemini

Interconnect · Gemini · 2010

Cray Gemini

3D torus fabric of the XE/XK series, used in Titan.

Why this part

Gemini put two nodes behind each router and added hardware support for one-sided remote memory access, which is what made partitioned global address space languages usable at scale. Titan reused Jaguar's Gemini fabric unchanged when it added GPUs, and that is the reason the upgrade was affordable: the expensive, building-shaped part of a supercomputer is the network, and Oak Ridge did not touch it.

Systems using this part

Systems
16
Rmax underneath
25.44 PFlop/s
Units recorded
-
0 of 16 edges disclose a quantity
System Role Country Units System Rmax Supplied by Rank
Blue Waters
2013-03
Interconnect USA - - Cray
now Hewlett Packard Enterprise
-
Big Red II
2013
Interconnect USA - 597.40 TFlop/s Cray
now Hewlett Packard Enterprise
#47 →
Titan
2012-11
Interconnect USA - 17.59 PFlop/s Cray
now Hewlett Packard Enterprise
#1 →
Camphor 1
2012
Interconnect Japan - 251.70 TFlop/s Cray
now Hewlett Packard Enterprise
#73 →
Cielo
2011
Interconnect USA - 1.11 PFlop/s Cray
now Hewlett Packard Enterprise
#6 →
Hermit
2011
Interconnect Germany - 831.40 TFlop/s Cray
now Hewlett Packard Enterprise
#12 →
Todi
2011
Interconnect Switzerland - 273.70 TFlop/s Cray
now Hewlett Packard Enterprise
#91 →
Hopper (NERSC)
2010
Interconnect USA - 1.05 PFlop/s Cray
now Hewlett Packard Enterprise
#5 →
Tupã
2010
Interconnect Brazil - 214.20 TFlop/s Cray
now Hewlett Packard Enterprise
#29 →
Lindgren
2010
Interconnect Sweden - 237.20 TFlop/s Cray
now Hewlett Packard Enterprise
#31 →
Haedam
2010
Interconnect South Korea - 316.40 TFlop/s Cray
now Hewlett Packard Enterprise
#20 →
Raptor
2010
Interconnect USA - 674.90 TFlop/s Cray
now Hewlett Packard Enterprise
#18 →
Garnet
2010
Interconnect USA - 1.17 PFlop/s Cray
now Hewlett Packard Enterprise
#26 →
Monte Rosa
2009-05
Interconnect Switzerland - 297.00 TFlop/s Cray
now Hewlett Packard Enterprise
#34 →
Hexagon
2008-01
Interconnect Norway - 160.10 TFlop/s Cray
now Hewlett Packard Enterprise
#112 →
HECToR
2007-10
Interconnect United Kingdom - 660.24 TFlop/s Cray
now Hewlett Packard Enterprise
#19 →

“Units recorded” sums only the edges where a public source states a quantity. It is a floor, not a total, and should never be read as installed base.

Further reading