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XIO
XIO is a packet-based, high-performance computer bus employed by the SGI Origin 2000, Octane, Altix, Fuel and Tezro machines. The XIO forms a bus between high-performance system devices and the memory controller. XIO is usually used in a star topology, using a router ASIC called Crossbow (Xbow) to connect up to eight fully symmetrical devices in a system (one of them is usually the memory controller / CPU bridge, called HEART in Octane or Hub in Origin). Other devices known to have XIO interfaces are: * BRIDGE: XIO to PCI-64 bridge (Octane, Origin) * XBRIDGE: XIO to PCI-X bridge (Altix) * HQ4: command processor of ImpactSR cards (Octane) * KTOWN: frontend for InfiniteReality2 cards (Onyx, Origin variation) * XC: Crosstown converter * BUZZ: "OpenGL-on-a-Chip" ASIC used in ODYSSEY/VPro graphics (V6/V8/V10/V12) The XIO employs two source-synchronous channels (one in each direction), each 8 or 16 bits wide. They are clocked at 400 MHz to achieve peak rates of 800 M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SGI Origin 2000
The SGI Origin 2000 is a family of mid-range and high-end server computers developed and manufactured by Silicon Graphics (SGI). They were introduced in 1996 to succeed the SGI Challenge and POWER Challenge. At the time of introduction, these ran the IRIX operating system, originally version 6.4 and later, 6.5. A variant of the Origin 2000 with graphics capability is known as the Onyx2. An entry-level variant based on the same architecture but with a different hardware implementation is known as the Origin 200. The Origin 2000 was succeeded by the Origin 3000 in July 2000, and was discontinued on June 30, 2002. Models The family was announced on October 7, 1996. The project was code named ''Lego'', and also known as SN0, to indicate the first in a series of scalable node architectures, contrasting with previous symmetric multiprocessor architectures in the SGI Challenge series. The Origin 2100 is mostly the same as the other models except that it is not upgradeable to other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Source-synchronous
Source-Synchronous clocking refers to a technique used for timing symbols on a digital interface. Specifically, it refers to the technique of having the transmitting device send a clock signal along with the data signals. The timing of the unidirectional data signals is referenced to the clock (often called the strobe) sourced by the same device that generates those signals, and not to a global clock (i.e. generated by a bus master). Compared to other digital clocking topologies like system-synchronous clocks, where a global clock source is fed to all devices in the system, a source-synchronous clock topology can attain far higher speeds. This type of clocking is common in high-speed interfaces between micro-chips, including DDR SDRAM, SGI XIO interface, Intel Front Side Bus A 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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Bus
In computer architecture, a bus (shortened form of the Latin '' omnibus'', and historically also called data highway or databus) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols. Early computer buses were parallel electrical wires with multiple hardware connections, but the term is now used for any physical arrangement that provides the same logical function as a parallel electrical busbar. Modern computer buses can use both parallel and bit serial connections, and can be wired in either a multidrop (electrical parallel) or daisy chain topology, or connected by switched hubs, as in the case of Universal Serial Bus (USB). Background and nomenclature Computer systems generally consist of three main parts: * The central processing unit (CPU) that processes data, * The memory that holds the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SGI Octane
SGI may refer to: Companies *Saskatchewan Government Insurance *Scientific Games International, a gambling company *Silicon Graphics, Inc., a former manufacturer of high-performance computing products *Silicon Graphics International, formerly Rackable Systems, which acquired the former Silicon Graphics, Inc. *Smoking Gun Interactive, a video game company * Synthetic Genomics, Inc., an alternative fuels company Other uses * Saanich-Gulf Islands, a federal electoral district in British Columbia, Canada *Silicon Graphics Image, a graphics file format for Silicon Graphics workstations *Soka Gakkai International, a Nichiren Buddhist movement and also a non-governmental organization (NGO) * SGI, the IATA code for Mushaf Airbase in Pakistan *''Stargate Infinity'', an animated television series *Spheroidal graphite iron, another name for ductile iron * Sustainable Governance Indicators, statistics measuring the need for reform among Organisation for Economic Co-operation and Developmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SGI Altix
SGI may refer to: Companies *Saskatchewan Government Insurance *Scientific Games International, a gambling company *Silicon Graphics, Inc., a former manufacturer of high-performance computing products *Silicon Graphics International, formerly Rackable Systems, which acquired the former Silicon Graphics, Inc. *Smoking Gun Interactive, a video game company * Synthetic Genomics, Inc., an alternative fuels company Other uses * Saanich-Gulf Islands, a federal electoral district in British Columbia, Canada *Silicon Graphics Image, a graphics file format for Silicon Graphics workstations *Soka Gakkai International, a Nichiren Buddhist movement and also a non-governmental organization (NGO) * SGI, the IATA code for Mushaf Airbase in Pakistan *''Stargate Infinity'', an animated television series *Spheroidal graphite iron, another name for ductile iron * Sustainable Governance Indicators, statistics measuring the need for reform among Organisation for Economic Co-operation and Developmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SGI Fuel
The SGI Fuel is a mid-range workstation developed and manufactured by Silicon Graphics, Inc. (SGI). It was introduced in January 2002, with a list price of US$11,495. Together with the entire MIPS platform, general availability for the Fuel ended on December 29, 2006. An equivalent product for the same market segment was not provided until 2008, when the Virtu product line was introduced, based on x86 microprocessors and Nvidia graphics. The Fuel is sometimes perceived as the successor to the SGI O2, but it is not (SGI never made a new low-end system after O2). The Fuel was SGI's mid-range response to customers who only wanted a uniprocessor system, though the 4 GB RAM limit led to fewer sales than would otherwise have been the case, e.g. customers using ANSYS would have preferred at least 8 GB maximum RAM. Fuel's larger sibling is the SGI Tezro, a system that can have up to four 1 GHz R16000 CPUs with 16 MB L2 each. Both Fuel and Tezro are based on SGI's Origin 3000 arc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SGI Tezro
The SGI Tezro is a series of high-end computer workstations sold by SGI from 2003 until 2006. Using MIPS CPUs and running IRIX, it is the immediate successor to the SGI Octane line. The systems were produced in both rack-mount and tower versions, and the series was released in June 2003 with a list price of . The Tezro was released alongside the SGI Onyx4 and rack-mountable Tezros share many components with it, including plastic skins. The rack-mounted Tezros are functionally very similar to an Infinite Performance-equipped SGI Onyx350. Tezro marked the return of the original cube logo to SGI machines. It was replaced in 2008 by the SGI Virtu product line. Technical specifications Architecture Similar to other SGI systems, the Tezro uses a non-blocking crossbar interconnect to connect all subsystems together. Tezro is based on SGI's Origin 3000 architecture. ARCS is provided as the boot firmware, as with other SGI computer systems of that era. Processors Tezro systems u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memory Controller
The memory controller is a digital circuit that manages the flow of data going to and from the computer's main memory. A memory controller can be a separate chip or integrated into another chip, such as being placed on the same die or as an integral part of a microprocessor; in the latter case, it is usually called an integrated memory controller (IMC). A memory controller is sometimes also called a memory chip controller (MCC) or a memory controller unit (MCU). A common form of memory controller is the memory management unit (MMU) which in many operating systems implements virtual addressing. History Most modern desktop or workstation microprocessors use an ''integrated memory controller'' (IMC), including microprocessors from Intel, AMD, and those built around the ARM architecture. Prior to K8 (circa 2003), AMD microprocessors had a memory controller implemented on their motherboard's northbridge. In K8 and later, AMD employed an integrated memory controller. Likewis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Router (computing)
A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions between networks and on the global Internet. Data sent through a network, such as a web page or email, is in the form of data packets. A packet is typically forwarded from one router to another router through the networks that constitute an internetwork (e.g. the Internet) until it reaches its destination node. A router is connected to two or more data lines from different IP networks. When a data packet comes in on one of the lines, the router reads the network address information in the packet header to determine the ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey. The most familiar type of IP routers are home and small office routers that simply forward IP packets between the home computers and the Internet. More sophisticated routers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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-efficiency video codec. Application-specific standard product (ASSP) chips are intermediate between ASICs and industry standard integrated circuits like the 7400 series or the 4000 series. ASIC chips are typically fabricated using metal-oxide-semiconductor (MOS) technology, as MOS integrated circuit chips. As feature sizes have shrunk and design tools improved over the years, the maximum complexity (and hence functionality) possible in an ASIC has grown from 5,000 logic gates to over 100 million. Modern ASICs often include entire microprocessors, memory blocks including ROM, RAM, EEPROM, flash memory and other large building blocks. Such an ASIC is often termed a SoC (system-on-chip). Designers of digital ASICs often use a hardware descrip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Processing Unit
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. This contrasts with external components such as main memory and I/O circuitry, and specialized processors such as graphics processing units (GPUs). The form, design, and implementation of CPUs have changed over time, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic–logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching (from memory), decoding and execution (of instructions) by directing the coordinated operations of the ALU, registers and other co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SGI VPro
SGI may refer to: Companies *Saskatchewan Government Insurance *Scientific Games International, a gambling company *Silicon Graphics, Inc., a former manufacturer of high-performance computing products *Silicon Graphics International, formerly Rackable Systems, which acquired the former Silicon Graphics, Inc. *Smoking Gun Interactive, a video game company * Synthetic Genomics, Inc., an alternative fuels company Other uses * Saanich-Gulf Islands, a federal electoral district in British Columbia, Canada *Silicon Graphics Image, a graphics file format for Silicon Graphics workstations *Soka Gakkai International, a Nichiren Buddhist movement and also a non-governmental organization (NGO) * SGI, the IATA code for Mushaf Airbase in Pakistan *''Stargate Infinity'', an animated television series *Spheroidal graphite iron, another name for ductile iron * Sustainable Governance Indicators, statistics measuring the need for reform among Organisation for Economic Co-operation and Developmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
