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Parts/Interconnect/NEC Earth Simulator crossbar

Interconnect · SX · 2002

NEC Earth Simulator crossbar

Single-stage full crossbar across 640 nodes: 2,700 km of cable, and a topology nobody has attempted at that scale since.

Why this part

640 nodes joined by one single-stage crossbar, meaning any node reached any other in a single hop at 12.3 GB/s, a figure nothing else came close to in 2002. It also occupied a purpose built building and consumed a substantial share of the machine's budget and floor area. The Earth Simulator's dominance was as much this network as the vector processors, and both were beaten on cost rather than on capability.

Systems using this part

Systems
1
Rmax underneath
35.86 TFlop/s
Units recorded
-
0 of 1 edges disclose a quantity
System Role Country Units System Rmax Supplied by Rank
Earth Simulator
2002-03
Interconnect Japan - 35.86 TFlop/s NEC #1 →

“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