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IBM ViVA
ViVA (Virtual Vector Architecture) is a technology from IBM for coupling together multiple scalar floating point units to act as a single vector processor. Certain computing tasks are more efficiently handled through vector computations where an instruction can be applied to multiple elements simultaneously, rather than the scalar approach where one instruction is applied to one piece of data at a time. This kind of technology is highly sought after for scientific computing and is IBM's answer to the vector-based supercomputers pioneered by Cray and that was the basis for NEC's Earth Simulator which was the fastest supercomputer in the world 2002-2004. ViVA was developed and implemented by IBM together with National Energy Research Scientific Computing Center inside the Blue Planet project where they had 8 dual core POWER5 processors made into one vector processor capable of approximately 60-80 GFLOPS of computing power. ViVA technology is in use in the ASC Purple supercomputer. W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scalar (computing)
Scalar processors are a class of computer processors that process only one data item at a time. Typical data items include integers and floating point numbers. Classification A scalar processor is classified as a single instruction, single data (SISD) processor in Flynn's taxonomy. The Intel 486 is an example of a scalar processor. It is to be contrasted with a vector processor where a single instruction operates simultaneously on multiple data items (and thus is referred to as a single instruction, multiple data (SIMD) processor). The difference is analogous to the difference between scalar and vector arithmetic. The term ''scalar'' in computing dates to the 1970 and 1980s when vector processors were first introduced. It was originally used to distinguish the older designs from the new vector processors. Superscalar processor A superscalar processor (such as the Intel P5) may execute more than one instruction during a clock cycle by simultaneously dispatching multiple ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floating Point Unit
Floating may refer to: * a type of dental work performed on horse teeth * use of an isolation tank * the guitar-playing technique where chords are sustained rather than scratched * ''Floating'' (play), by Hugh Hughes * Floating (psychological phenomenon), slipping into altered states * Floating exchange rate, a market-valued currency * Floating voltage, and floating ground, a voltage or ground in an electric circuit that is not connected to the Earth or another reference voltage * Floating point, a representation in computing of rational numbers most commonly associated with the IEEE 754 standard * ''Floating'' (film), a 1997 American drama film Albums and songs * ''Floating'' (Eloy album) (1974) * ''Floating'' (Ketil Bjørnstad album) (2005) * ''Floating'' (EP), a 1991 EP by Bill Callahan * "Floating" (The Moody Blues song) (1969) * "Floating" (Megan Rochell song) (2006) * "Floating" (Jape song) (2004) * "Floating", a song by Jolin Tsai from the 2000 album '' Don't Stop' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vector Processor
In computing, a vector processor or array processor is a central processing unit (CPU) that implements an instruction set where its instructions are designed to operate efficiently and effectively on large one-dimensional arrays of data called ''vectors''. This is in contrast to scalar processors, whose instructions operate on single data items only, and in contrast to some of those same scalar processors having additional single instruction, multiple data (SIMD) or SWAR Arithmetic Units. Vector processors can greatly improve performance on certain workloads, notably numerical simulation and similar tasks. Vector processing techniques also operate in video-game console hardware and in graphics accelerators. Vector machines appeared in the early 1970s and dominated supercomputer design through the 1970s into the 1990s, notably the various Cray platforms. The rapid fall in the price-to-performance ratio of conventional microprocessor designs led to a decline in vector supercom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercomputer
A supercomputer is a 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 instructions per second (MIPS). Since 2017, there have existed supercomputers which can perform over 1017 FLOPS (a hundred quadrillion FLOPS, 100 petaFLOPS or 100 PFLOPS). For comparison, a desktop computer has performance in the range of hundreds of gigaFLOPS (1011) to tens of teraFLOPS (1013). Since November 2017, all of the world's fastest 500 supercomputers run on Linux-based operating systems. Additional research is being conducted in the United States, the European Union, Taiwan, Japan, and China to build faster, more powerful and technologically superior exascale supercomputers. Supercomputers play an important role in the field of computational science, and are used for a wide range of computationally intensive tasks in var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cray
Cray Inc., a subsidiary of Hewlett Packard Enterprise, is an American supercomputer manufacturer headquartered in Seattle, Washington. It also manufactures systems for data storage and analytics. Several Cray supercomputer systems are listed in the TOP500, which ranks the most powerful supercomputers in the world. Cray manufactures its products in part in Chippewa Falls, Wisconsin, where its founder, Seymour Cray, was born and raised. The company also has offices in Bloomington, Minnesota (which have been converted to Hewlett Packard Enterprise offices), and numerous other sales, service, engineering, and R&D locations around the world. The company's predecessor, Cray Research, Inc. (CRI), was founded in 1972 by computer designer Seymour Cray. Seymour Cray later formed Cray Computer Corporation (CCC) in 1989, which went bankrupt in 1995. Cray Research was acquired by Silicon Graphics (SGI) in 1996. Cray Inc. was formed in 2000 when Tera Computer Company purchased the Cray Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth Simulator
The is a series of supercomputers deployed at Japan Agency for Marine-Earth Science and Technology Yokohama Institute of Earth Sciences. Earth Simulator (first generation) The first generation of Earth Simulator, developed by the Japanese government's initiative "Earth Simulator Project", was a highly parallel vector supercomputer system for running global climate models to evaluate the effects of global warming and problems in solid earth geophysics. The system was developed for Japan Aerospace Exploration Agency, Japan Atomic Energy Research Institute, and Japan Marine Science and Technology Center (JAMSTEC) in 1997. Construction started in October 1999, and the site officially opened on 11 March 2002. The project cost 60 billion yen. Built by NEC, ES was based on their SX-6 architecture. It consisted of 640 nodes with eight vector processors and 16 gigabytes of computer memory at each node, for a total of 5120 processors and 10 terabytes of memory. Two nodes were inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Energy Research Scientific Computing Center
The National Energy Research Scientific Computing Center (NERSC), is a high-performance computing (supercomputer) National User Facility operated by Lawrence Berkeley National Laboratory for the United States Department of Energy Office of Science. As the mission computing center for the Office of Science, NERSC houses high performance computing and data systems used by 9,000 scientists at national laboratories and universities around the country. NERSC's newest and largest supercomputer is Perlmutter (supercomputer), Perlmutter, which debuted in 2021 ranked 5th on the TOP500 list of world's fastest supercomputers. History NERSC was founded in 1974 as the Controlled Thermonuclear Research Computer Center, or CTRCC, at Lawrence Livermore National Laboratory. The center was created to provide computing resources to the fusion energy research community, and began with a Control Data Corporation 6600 computer (SN-1). The first machine procured directly by the center was a CDC 7600, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FLOPS
In computing, floating point operations per second (FLOPS, flops or flop/s) is a measure of computer performance, useful in fields of scientific computations that require floating-point calculations. For such cases, it is a more accurate measure than measuring instructions per second. Floating-point arithmetic Floating-point arithmetic is needed for very large or very small real numbers, or computations that require a large dynamic range. Floating-point representation is similar to scientific notation, except everything is carried out in base two, rather than base ten. The encoding scheme stores the sign, the exponent (in base two for Cray and VAX, base two or ten for IEEE floating point formats, and base 16 for IBM Floating Point Architecture) and the significand (number after the radix point). While several similar formats are in use, the most common is ANSI/IEEE Std. 754-1985. This standard defines the format for 32-bit numbers called ''single precision'', as well as 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ASC Purple
ASC Purple was a supercomputer installed at the Lawrence Livermore National Laboratory in Livermore, California. The computer was a collaboration between IBM Corporation and Lawrence Livermore Lab. Announced November 19, 2002, it was installed in July 2005 and decommissioned on November 10th, 2010. The contract for this computer along with the Blue Gene/L supercomputer was worth US $290 million. As of November 2009, the computer ranked 66th on the TOP500 supercomputer list. It was a redundant ring of POWER5 SMP servers. 196 of these machines were connected together. The system contained 12,544 POWER5 microprocessors in total with 50 terabytes of total memory and 2 petabytes of total disk storage. The system ran IBM's AIX 5L operating system. The computer consumed 7.5 MW of electricity, including cooling. It has a theoretical processing speed of 100 teraflops. It was built as stage five of the Advanced Simulation and Computing Program (ASC) started by the U.S. Department of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
POWER6
The POWER6 is a microprocessor developed by IBM that implemented the Power ISA v.2.03. When it became available in systems in 2007, it succeeded the POWER5+ as IBM's flagship Power microprocessor. It is claimed to be part of the eCLipz project, said to have a goal of converging IBM's server hardware where practical (hence "ipz" in the acronym: iSeries, pSeries, and zSeries). History POWER6 was described at the International Solid-State Circuits Conference (ISSCC) in February 2006, and additional details were added at the Microprocessor Forum in October 2006 and at the next ISSCC in February 2007. It was formally announced on May 21, 2007. It was released on June 8, 2007 at speeds of 3.5, 4.2 and 4.7 GHz, but the company has noted prototypes have reached 6 GHz. POWER6 reached first silicon in the middle of 2005, and was bumped to 5.0 GHz in May 2008 with the introduction of the P595. Description The POWER6 is a dual-core processor. Each core is capable of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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