NUMAlink

NUMAlink is a system interconnect developed by SGI for use in its distributed shared memory ccNUMA computer systems. NUMAlink was originally developed by SGI for their Origin 2000 and Onyx2 systems. At the time of these systems' introduction, it was branded as "CrayLink" during SGI's brief ownership of Cray Research.^[1]

NUMAlink 2

NUMAlink 2 (branded as CrayLink) was the second generation of the interconnect, announced in October 1996 and used in the Onyx2 visualization systems, the Origin 200 and the Origin 2000 servers and supercomputers.^[1] There was no NUMAlink 1, as SGI's engineers deemed the system interconnect used in the Stanford DASH to be the first generation NUMAlink interconnect. The NUMAlink 2 interface was the Hub ASIC. NUMAlink 2 is capable of 1.6 GB/s of peak bandwidth through two 800 MB/s, PECL 400 MHz 16-bit unidirectional links.^[2]

NUMAlink 3

NUMAlink 3 is the third generation of the interconnect, introduced in 2000 and used in the Origin 3000 and Altix 3000. NUMAlink 3 is capable of 3.2 GB/s of peak bandwidth through two 1.6 GB/s unidirectional links.^[2]

NUMAlink 4

NUMAlink 4 is the fourth generation of the interconnect, introduced in 2004 and used in the Altix 4000. NUMAlink 4 is capable of 6.4 GB/s of peak bandwidth through two 3.2 GB/s unidirectional links.^[2]

NUMAlink 5

NUMAlink 5 is the fifth generation of the interconnect, introduced in 2009 and used in the Altix UV series. NUMAlink 5 is capable of 15 GB/s of peak bandwidth through two 7.5 GB/s unidirectional links.^[3]

NUMAlink 6

NUMAlink 6 is the sixth generation of the interconnect, introduced in 2012 and used in the SGI UV 2000, SGI UV 3000, SGI UV 30. NUMAlink 6 is capable of 6.7 GB/s of bidirectional peak bandwidth.^{[4] [5]}

NUMAlink 7

NUMAlink 7 is the seventh generation of the interconnect, introduced in 2014 and used in the SGI UV 300, SGI UV 30EX, SGI UV 300H, SGI UV 300RL. NUMAlink 7 is capable of 14.94 GB/s of bidirectional peak bandwidth.^{[6] [7] [8]}

See also

• InfiniBand
• Myrinet
• QsNet
• QuickRing
• Scalable Coherent Interconnect

References

1. "Silicon Graphics and Cray Research Unveil Modular Origin Server Family: High-Bandwidth Systems Revolutionize Computer Buying Economics With Seamless Scalability". Press release. October 7, 1996. Archived from the original on July 7, 1997. Retrieved September 21, 2013.
2. "SGI® NUMAlink™ Industry Leading Interconnect Technology" (PDF). White paper. April 13, 2005. Archived from the original (PDF) on March 28, 2006. Retrieved September 21, 2013.
3. "SGI Altix UV" (PDF). www.sgi.com. Silicon Graphics International. 2009. Retrieved 2009-11-18.
4. "SGI UV 2000 Datasheet" (PDF). www.sgi.com. Silicon Graphics International. 2015. Retrieved 2016-02-10.
5. "SGI UV 3000, UV 30 Datasheet" (PDF). www.sgi.com. Silicon Graphics International. 2015. Retrieved 2016-02-10.
6. "SGI UV 300, UV 30EX Datasheet" (PDF). www.sgi.com. Silicon Graphics International. 2015. Retrieved 2016-02-10.
7. "SGI UV 300H Datasheet" (PDF). www.sgi.com. Silicon Graphics International. 2015. Retrieved 2016-02-10.
8. "SGI UV 300RL Datasheet" (PDF). www.sgi.com. Silicon Graphics International. 2015. Retrieved 2016-02-10.

• Joseph Heinrich, Origin and Onyx2 Theory of Operations Manual, 007-3439-002, Silicon Graphics.