Altix is a line of server computers and

supercomputer A supercomputer is a type of computer with a high level of performance as compared to a general-purpose computer. The performance of a supercomputer is commonly measured in floating-point operations per second (FLOPS) instead of million instruc ...

s produced by

Silicon Graphics Silicon Graphics, Inc. (stylized as SiliconGraphics before 1999, later rebranded SGI, historically known as Silicon Graphics Computer Systems or SGCS) was an American high-performance computing manufacturer, producing computer hardware and soft ...

(and successor company

Silicon Graphics International Silicon Graphics International Corp. (SGI; formerly Rackable Systems, Inc.) was an American manufacturer of computer hardware and software, including high-performance computing systems, x86-based servers for datacenter deployment, and visuali ...

), based on

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and Delaware General Corporation Law, incorporated in Delaware. Intel designs, manufactures, and sells computer compo ...

processors Processor may refer to: Computing Hardware * Processor (computing) ** Central processing unit (CPU), the hardware within a computer that executes a program *** Microprocessor, a central processing unit contained on a single integrated circuit ( ...

. It succeeded the MIPS/

IRIX IRIX (, ) is a discontinued operating system developed by Silicon Graphics (SGI) to run on the company's proprietary MIPS architecture, MIPS workstations and servers. It is based on UNIX System V with Berkeley Software Distribution, BSD extensio ...

-based

Origin 3000 The Origin 3000 and the Onyx 3000 is a family of mid-range and high-end computers developed and manufactured by SGI. The Origin 3000 is a server, and the Onyx 3000 is a visualization system. Both systems were introduced in July 2000 to succeed ...

servers.

History

The line was first announced on January 7, 2003, with the Altix 3000 series, based on

Itanium 2 Itanium (; ) is a discontinued family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). The Itanium architecture originated at Hewlett-Packard (HP), and was later jointly developed by HP and I ...

processors and SGI's NUMAlink processor interconnect. At product introduction, the system supported up to 64 processors running

Linux Linux ( ) is a family of open source Unix-like operating systems based on the Linux kernel, an kernel (operating system), operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically package manager, pac ...

as a

single system image In distributed computing, a single system image (SSI) cluster is a cluster (computing), cluster of machines that appears to be one single system. The concept is often considered synonymous with that of a distributed operating system, but a single i ...

and shipped with a Linux distribution called SGI Advanced Linux Environment, which was compatible with Red Hat Advanced Server. By August 2003, many SGI Altix customers were running Linux on 128- and 256-processor SGI Altix systems. SGI officially announced 256-processor support within a single system image of Linux on March 10, 2004, using a 2.4-based

Linux kernel The Linux kernel is a Free and open-source software, free and open source Unix-like kernel (operating system), kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the k ...

. The SGI Advanced Linux Environment was eventually dropped after support using a standard, unmodified

SUSE Linux Enterprise Server SUSE Linux Enterprise (SLE) is a Linux-based operating system developed by SUSE. It is available in two editions, suffixed with Server (SLES) for servers and mainframes, and Desktop (SLED) for workstations and desktop computers. Its major ve ...

(SLES) distribution for SGI Altix was provided with SLES 8 and SLES 9. Later, SGI Altix 512-processor systems were officially supported using an unmodified, standard Linux distribution with the launch of SLES 9 SP1. Besides full support of SGI Altix on

, a standard and unmodified

Red Hat Enterprise Linux Red Hat Enterprise Linux (RHEL) is a commercial Linux distribution developed by Red Hat. Red Hat Enterprise Linux is released in server versions for x86-64, Power ISA, ARM64, and IBM Z and a desktop version for x86-64. Fedora Linux and ...

was also fully supported starting with SGI Altix 3700 Bx2 with RHEL 4 and RHEL 5 with system processor limits defined by Red Hat for those releases. On November 14, 2005, SGI introduced the Altix 4000 series based on the Itanium 2. The Altix 3000 and 4000 are

distributed shared memory In computer science, distributed shared memory (DSM) is a form of memory architecture where physically separated memories can be addressed as a single shared address space. The term "shared" does not mean that there is a single centralized memo ...

multiprocessor Multiprocessing (MP) is the use of two or more central processing units (CPUs) within a single computer system. The term also refers to the ability of a system to support more than one processor or the ability to allocate tasks between them. The ...

s. SGI later officially supported 1024-processor systems on an unmodified, standard Linux distribution with the launch of SLES 10 in July 2006. SGI Altix 4700 was also officially supported by Red Hat with RHEL 4 and RHEL 5 — maximum processor limits were as defined by Red Hat for its RHEL releases. The Altix brand was used for systems based on

multi-core A multi-core processor (MCP) is a microprocessor on a single integrated circuit (IC) with two or more separate central processing units (CPUs), called ''cores'' to emphasize their multiplicity (for example, ''dual-core'' or ''quad-core''). Ea ...

Intel

Xeon Xeon (; ) is a brand of x86 microprocessors designed, manufactured, and marketed by Intel, targeted at the non-consumer workstation, server, and embedded markets. It was introduced in June 1998. Xeon processors are based on the same archite ...

processors. These include the Altix XE

rackmount A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is wide. The 19 inch dimension includes the edges or ''ears'' that protrude from each side of the ...

servers, Altix ICE

blade server A blade server is a stripped-down server computer with a modular design optimized to minimize the use of physical space and energy. Blade servers have many components removed to save space, minimize power consumption and other considerations, wh ...

s and Altix UV supercomputers.

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...

's Columbia

, installed in 2004 and decommissioned in 2013, was a 10240-microprocessor cluster of twenty Altix 3000 systems, each with 512 microprocessors, interconnected with

InfiniBand InfiniBand (IB) is a computer networking communications standard used in high-performance computing that features very high throughput and very low latency. It is used for data interconnect both among and within computers. InfiniBand is also used ...

Altix 3000

The Altix 3000 is the first generation of Altix systems. It was succeeded by the Altix 4000 in 2004, and the last model was discontinued on December 31, 2006. The Altix 330 is an entry-level server. Unlike the high-end models, the Altix 330 is not "brick" based, but is instead based on 1U-high compute modules mounted in a rack and connected with NUMAlink. A single system may contain 1 to 16 Itanium 2 processors and 2 to 128 GB of memory. The Altix 1330 is a

cluster may refer to: Science and technology Astronomy * Cluster (spacecraft), constellation of four European Space Agency spacecraft * Cluster II (spacecraft), a European Space Agency mission to study the magnetosphere * Asteroid cluster, a small ...

of Altix 330 systems. The systems are networked with

Gigabit Ethernet In computer networking, Gigabit Ethernet (GbE or 1 GigE) is the term applied to transmitting Ethernet frames at a rate of a gigabit per second. The most popular variant, 1000BASE-T, is defined by the IEEE 802.3ab standard. It came into use in ...

or 4X

. The Altix 350 is a mid-range model that supports up to 32 Itanium 2 processors. Introduced in 2005, it runs

, rather than SGI's own

Unix Unix (, ; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, a ...

variant,

. The Altix 350 is scalable from one to thirty-two

64-bit In computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit central processing units (CPU) and arithmetic logic units (ALU) are those that are based on processor registers, a ...

Itanium Itanium (; ) is a discontinued family of 64-bit computing, 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). The Itanium architecture originated at Hewlett-Packard (HP), and was later jointly dev ...

processors. It features

DDR SDRAM Double Data Rate Synchronous Dynamic Random-Access Memory (DDR SDRAM) is a double data rate (DDR) synchronous dynamic random-access memory (SDRAM) class of memory integrated circuits used in computers. DDR SDRAM, also retroactively called DDR ...

and

PCI-X PCI-X, short for Peripheral Component Interconnect eXtended, is a computer bus and expansion card standard that enhances the 32-bit Conventional PCI, PCI local bus for higher Bandwidth (computing), bandwidth demanded mostly by Server (computing ...

expansion ports, and can support

SCSI Small Computer System Interface (SCSI, ) is a set of standards for physically connecting and transferring data between computers and peripheral devices, best known for its use with storage devices such as hard disk drives. SCSI was introduced ...

SATA SATA (Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives. Serial ATA succeeded the earlier Parallel ATA (PATA) standard ...

internal

hard drive A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating hard disk drive platter, pla ...

s. Designed as a rack-mount server, the Altix 350 is 2U, meaning it occupies two slots vertically in a standard server rack. The Altix 1350 is a cluster of Altix 350 systems. , the Altix 350 was superseded by the Altix 450 (based on the

) and the Altix XE (based on the

). The Altix 3300 is a mid-range model supporting 4 to 12 processors and 2 to 48 GB of memory. It is packaged in a short (17U) rack. The Altix 3700 is a high-end model supporting 16 to 512 processors and 8 GB to 2 TB of memory. It requires one or multiple tall (39U) rack (s). A variant of the Altix 3000 with graphics capability is known as the

Prism PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies. The program is also known by the SIGAD . PRISM collects stored internet ...

. The 3700 is based on the third generation NUMAflex

architecture and it uses the NUMAlink 4 interconnection fabric. The Altix 3000 supports a single system image of 64 processors. If there are more than 64 processors in a system, then the system must be partitioned. The basic building block is called a C-brick, which contains two nodes in a 4U high rackmount unit. Each node contains two

processors that connect to the Super-Bedrock

application-specific integrated circuit An application-specific integrated circuit (ASIC ) is an integrated circuit (IC) chip customized for a particular use, rather than intended for general-purpose use, such as a chip designed to run in a digital voice recorder or a high-efficienc ...

through a single

front-side bus The front-side bus (FSB) is a computer communication interface ( bus) that was often used in Intel-chip-based computers during the 1990s and 2000s. The EV6 bus served the same function for competing AMD CPUs. Both typically carry data between th ...

. The Super-Bedrock is a

crossbar switch In electronics and telecommunications, a crossbar switch (cross-point switch, matrix switch) is a collection of switches arranged in a Matrix (mathematics), matrix configuration. A crossbar switch has multiple input and output lines that form a ...

for the processors, the local RAM, the network interface and the I/O interface. The two Super-Bedrock

ASIC An application-specific integrated circuit (ASIC ) is an integrated circuit (IC) chip customized for a particular use, rather than intended for general-purpose use, such as a chip designed to run in a digital voice recorder or a high-efficien ...

s in each brick are connected internally by a single 6.4 GB/s NUMAlink 4 channel. A processor node also contains 16

DIMM A DIMM (Dual In-line Memory Module) is a popular type of memory module used in computers. It is a printed circuit board with one or both sides (front and back) holding DRAM chips and pins. The vast majority of DIMMs are manufactured in compl ...

slots that accept standard DDR DIMMs with capacities of 4 to 16 GB. The Altix 3700 Bx2 is a high-end model supporting 16 to 2,048 Itanium 2 processors and 12 GB to 24 TB of memory. It requires one or multiple tall (40U) racks.

Altix 4000

The Altix 4000 is the next Itanium-based product line. It has two models, the Altix 450 a mid-range server, and the Altix 4700 a high-end server. An Altix 4700 system contains up to 2048 dual-core Itanium 2 and Itanium ("Montvale" revision) microprocessor sockets, connected by the NUMAlink 4 interconnect in a fat tree network topology. The microprocessors are accompanied by up to 128 TB of memory (192 TB with single microprocessor socket blades and 16 GB DIMMs). Each node is contained within a

blade A blade is the Sharpness (cutting), sharp, cutting portion of a tool, weapon, or machine, specifically designed to puncture, chop, slice, or scrape surfaces or materials. Blades are typically made from materials that are harder than those they a ...

that plugs into an enclosure, the individual rack unit (IRU). The IRU is a 10U enclosure that contains the necessary components to support the blades such as the power supplies, two router boards (one for every five blades) and a L1 controller. Each IRU can support ten single-wide blades or two double-wide blades and eight single-width blades. The IRUs are mounted in 42U-high rack, and each rack supports up to four IRUs. Two types of node, processor and memory, are contained within a blade. Compute blades contain a processor node and consist of two PAC611 sockets for Itanium 2 and Itanium microprocessors, a Super-Hub (SHub)

(ASIC) (

chipset In a computer system, a chipset is a set of electronic components on one or more integrated circuits that manages the data flow between the processor, memory and peripherals. The chipset is usually found on the motherboard of computers. Chips ...

) and eight

dual in-line memory module A DIMM (Dual In-line Memory Module) is a popular type of memory module used in computers. It is a printed circuit board with one or both sides (front and back) holding DRAM integrated circuit, chips and Pin (electronics), pins. The vast majority ...

(DIMM) slots for memory. The number of microprocessor sockets in a compute blade is one or two. One-processor socket configurations provide more bandwidth as only one microprocessor socket is using the front side bus and local memory. Two-processor socket configurations do not support hyperthreading. Memory blades are used to expand the amount of memory without increasing the number of processors. They contain a SHub ASIC and 12 DIMM slots. Both compute and memory blades support 1, 2 4, 8, and 16 GB DIMMs. SGI support does not support any installations with 16 GB DIMMs. Multiple servers can be combined on the same Numalink fabric up to the theoretical maximum of 8,192 nodes (16,384 OS CPUs).

Altix XE

The Altix XE servers use Intel

x86-64 x86-64 (also known as x64, x86_64, AMD64, and Intel 64) is a 64-bit extension of the x86 instruction set architecture, instruction set. It was announced in 1999 and first available in the AMD Opteron family in 2003. It introduces two new ope ...

-architecture processors. Models include: * The Altix XE210 server supports up to two Dual or Quad-Core Intel Xeon processors, 5100 Series or 5300 series, 32 GB DDR2 667 MHz FBDIMM memory, 1 x PCIe x8 (low profile) and 1 x PCI-X 133 MHz (full height) PCI slots, and Three SATA/SAS drive bays. * The Altix XE240 server supports up to two Dual or Quad-Core Intel Xeon processors, 5100 Series or 5300 series, 32 GB DDR2 667 MHz FBDIMM memory, two PCI slots configuration options (option 1: 2 x PCIe x4 (low profile), 2 x PCIe x4 (full height), 1 x PCEe x8 (full height); or option 2: 2 x PCIe x4 (low profile), 3 x PCI-X 133 MHz (full height), 1 x PCI-X 133 MHz (full height), and Five SATA/SAS drive bays. * The Altix XE250 server * The Altix XE270 server is a 2U configuration with Intel Xeon processor 5500 series, with a choice of up to 18 DDR3 DIMMs (2 GB, 4 GB, or 8 GB DIMMs), 2 x PCIe x8 gen 2 (low profile), 1 x PCIe x4 gen 1 (low profile), 2 x PCI-x 133/100 (low profile) PCI slots, eight SATA or SAS drive bays with optional hardware RAID (0, 1, 5, 6, 10), * The Altix XE310 server was introduced January 8, 2007 and contains two nodes per XE310, up to four Dual or Quad-Core Intel Xeon processors, 5100 Series or 5300 series (two per node), 64 GB DDR2 667 MHz FBDIMM memory (32 GB per node), 2 x PCIe x8 (1 per node) PCI slots, and Four SATA/SAS drive bays (two per node). * The Altix XE320 server * The Altix XE340 server contains 2 compute nodes within a 1U configuration, Intel Xeon processor 5500 series, Choice of up to 12 DDR3 DIMMs per node (2 GB, 4 GB, or 8 GB DIMMs), 2 x PCIe x16 (1 per node) - low profile PCI slot, and Four SATA drive bays (2 per node) with optional SAS and hardware RAID 0, 1. * The Altix XE500 server is a 3U configuration with Intel Xeon processor 5500 series, with a choice of up to 18 DDR3 DIMMs (2 GB, 4 GB, or 8 GB DIMMs), 2 x PCIe x16 gen2 (full height) and 4 x PCIe x8 gen2 (full height) PCI slots, and Eight SATA or SAS drives with optional hardware RAID (0, 1, 5, 6, 10). * The Altix XE1200 cluster * The Altix XE1300 cluster All Altix XE systems support Novell

, and

Microsoft Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...

. VMware support was added across the Altix XE product line.

Altix ICE

The Altix ICE blade platform is an Intel Xeon-based system featuring diskless compute blades and a Hierarchical Management Framework (HMF) for scalability, performance, and resiliency. While the earlier Itanium-based Altix systems run a

single-system image In distributed computing, a single system image (SSI) cluster is a cluster of machines that appears to be one single system. The concept is often considered synonymous with that of a distributed operating system, but a single image may be presente ...

(SSI)

on 1024 processors or more using a standard SuSE Linux Enterprise Server (SLES) distribution, the Altix ICE's clustering capabilities use standard SLES or Red Hat Enterprise Linux distributions and scale to over 51,200 cores on

Pleiades The Pleiades (), also known as Seven Sisters and Messier 45 (M45), is an Asterism (astronomy), asterism of an open cluster, open star cluster containing young Stellar classification#Class B, B-type stars in the northwest of the constellation Tau ...

. The Altix ICE 8200LX blade enclosure features two 4x DDR IB switch blade and one high-performing plane, and the Altix ICE 8200EX features four 4x DDR IB switch blades, and two high-performing planes. Both configurations support either

hypercube In geometry, a hypercube is an ''n''-dimensional analogue of a square ( ) and a cube ( ); the special case for is known as a ''tesseract''. It is a closed, compact, convex figure whose 1- skeleton consists of groups of opposite parallel l ...

or fat tree topology, and 16 compute blades within an IRU. The IP-83 and IP-85 compute blades support Intel Xeon 5200 or 5400 Series processors, and the IP-95 compute blade support Intel Xeon 5500 Series processors. In November 2011 the ICE 8400 is based on either Intel Xeon 5500 or 5600 processors or the AMD Opteron 6100 series processors. , these use the

Xeon Phi Xeon Phi is a discontinued series of x86 manycore processors designed and made by Intel. It was intended for use in supercomputers, servers, and high-end workstations. Its architecture allowed use of standard programming languages and applicati ...

coprocessors."SGI - Products: Servers: SGI ICE X."
/ref>

Altix UV

The Altix UV supercomputer architecture was announced in November 2009.

Codename A code name, codename, call sign, or cryptonym is a code word or name used, sometimes clandestinely, to refer to another name, word, project, or person. Code names are often used for military purposes, or in espionage. They may also be used in ...

d Ultraviolet during development, the Altix UV combines a development of the NUMAlink interconnect used in the Altix 4000 (NUMAlink 5) with quad-, six- or eight-core " Nehalem-EX" Intel Xeon 7500 processors. Altix UV systems run either SuSE Linux Enterprise Server or Red Hat Enterprise Linux, and scale from 32 to 2,048 cores with support for up to 16 terabytes (TB) of shared memory in a single system image. In 2010 and 2011, SGI retired the Altix name for new servers produced by the company. Altix UV and Altix ICE have been shortened to "SGI UV" and "SGI ICE," while the Altix XE line is named "Rackable."

References

* Silicon Graphics, Inc. (June 12, 2007). ''Altix 3000 Rackmount Owner's Guide''. * Silicon Graphics, Inc. (June 12, 2007). ''SGI Altix 1330 Cluster Datasheet''. * Silicon Graphics, Inc. (June 12, 2007). ''SGI Altix 330 Server Datasheet''. * Silicon Graphics, Inc. (June 12, 2007). ''SGI Altix 350 Server Datasheet''. * Silicon Graphics, Inc. (June 12, 2007). ''SGI Altix 3700 Bx2 Servers and Supercomputers Datasheet''.

External links

SGI's webpage for AltixLinux Journal article regarding scaling of Linux on AltixNew Altix Software Allows 256-Processor Linux System

* ttp://www.hpcwire.com/topic/systems/17886914.html Article on SGI ProPack, Real-time, and Cluster Support for Altix {{Silicon Graphics SGI servers X86 supercomputers