NUMAlink
Encyclopedia
NUMAlink is a system interconnect developed by SGI
Silicon Graphics
Silicon Graphics, Inc. was a manufacturer of high-performance computing solutions, including computer hardware and software, founded in 1981 by Jim Clark...

 for use in its distributed shared memory
Distributed shared memory
Distributed Shared Memory , in Computer Architecture is a form of memory architecture where the memories can be addressed as one address space...

 ccNUMA computer systems. NUMAlink was originally developed by SGI for their Origin 2000
SGI Origin 2000
The SGI Origin 2000, code named Lego, is a family of mid-range and high-end servers developed and manufactured by SGI and introduced in 1996 to succeed the SGI Challenge and POWER Challenge. At the time of introduction, these systems ran IRIX 6.4 and later, IRIX 6.5. A variant of the Origin 2000...

 and Onyx2
SGI Onyx2
The SGI Onyx2, code name Kego, is a family of visualization systems developed and manufactured by SGI, introduced in 1996 to succeed the Onyx. The Onyx2's basic system architecture is based on the Origin 2000 servers, but with the notable inclusion of graphics hardware. In 2000, the Onyx2 was...

 systems. At the time of these systems' introduction, it was branded as "CrayLink" during SGI's brief ownership of Cray Research.

NUMAlink 2

NUMAlink 2 is the second generation of the interconnect, introduced in 1996 and used in the Onyx
SGI Onyx2
The SGI Onyx2, code name Kego, is a family of visualization systems developed and manufactured by SGI, introduced in 1996 to succeed the Onyx. The Onyx2's basic system architecture is based on the Origin 2000 servers, but with the notable inclusion of graphics hardware. In 2000, the Onyx2 was...

 visualization systems, the Origin 200
SGI Origin 200
The SGI Origin 200, code named Speedo, is an entry-level server computer developed and manufactured by SGI, introduced in October 1996 to accompany their mid-range and high-end Origin 2000. It is based on the same architecture as the Origin 2000 but has an unrelated hardware implementation...

 and the Origin 2000
SGI Origin 2000
The SGI Origin 2000, code named Lego, is a family of mid-range and high-end servers developed and manufactured by SGI and introduced in 1996 to succeed the SGI Challenge and POWER Challenge. At the time of introduction, these systems ran IRIX 6.4 and later, IRIX 6.5. A variant of the Origin 2000...

 servers and supercomputers. 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.

NUMAlink 3

NUMAlink 3 is the third generation of the interconnect, introduced in 2000 and used in the Origin 3000 and Altix 3000
Altix
Altix is a line of servers and supercomputers produced by Silicon Graphics , based on Intel processors. It succeeded the MIPS/IRIX-based Origin 3000 servers....

. NUMAlink 3 is capable of 3.2 GB/s of peak bandwidth through two 1.6 GB/s unidirectional links.

NUMAlink 4

NUMAlink 4 is the fourth generation of the interconnect, introduced in 2004 and used in the Altix 4000
Altix
Altix is a line of servers and supercomputers produced by Silicon Graphics , based on Intel processors. It succeeded the MIPS/IRIX-based Origin 3000 servers....

. NUMAlink 4 is capable of 6.4 GB/s of peak bandwidth through two 3.2 GB/s unidirectional links.

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.

See also

  • Infiniband
    InfiniBand
    InfiniBand is a switched fabric communications link used in high-performance computing and enterprise data centers. Its features include high throughput, low latency, quality of service and failover, and it is designed to be scalable...

  • Myrinet
    Myrinet
    Myrinet, ANSI/VITA 26-1998, is a high-speed local area networking system designed by Myricom to be used as an interconnect between multiple machines to form computer clusters. Myrinet has much lower protocol overhead than standards such as Ethernet, and therefore provides better throughput, less...

  • QsNet
    QsNet
    QsNet is a high speed interconnect designed by Quadrics used in HPC clusters, particularly Linux Beowulf Clusters. Although it can be used with TCP/IP; like SCI, Myrinet and Infiniband it is usually used with a communication API such as MPI or SHMEM called from a parallel program.The interconnect...

  • QuickRing
    QuickRing
    QuickRing was a gigabit-rate interconnect that combined the functions of a computer bus and a network. It was designed at Apple Computer as a multimedia system to run "on top" of existing local bus systems inside a computer, but was later taken over by National Semiconductor and repositioned as an...

  • Scalable Coherent Interconnect
    Scalable Coherent Interconnect
    SCI, for Scalable Coherent Interface, is a high-speed interconnect standard for shared memory multiprocessing and message passing. The IEEE Std 1596-1992, IEEE Standard for Scalable Coherent Interface was approved by the IEEE standards board on March 19, 1992...

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