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Cache-only Memory Architecture
Cache only memory architecture (COMA) is a computer memory organization for use in multiprocessors in which the local memories (typically DRAM) at each node are used as cache. This is in contrast to using the local memories as actual main memory, as in Non-Uniform Memory Access, NUMA organizations. In NUMA, each address in the global address space is typically assigned a fixed home node. When processors access some data, a copy is made in their local cache, but space remains allocated in the home node. Instead, with COMA, there is no home. An access from a remote node may cause that data to migrate. Compared to NUMA, this reduces the number of redundant copies and may allow more efficient use of the memory resources. On the other hand, it raises problems of how to find a particular data (there is no longer a home node) and what to do if a local memory fills up (migrating some data into the local memory then needs to evict some other data, which doesn't have a home to go to). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Memory
In computing, memory is a device or system that is used to store information for immediate use in a computer or related computer hardware and digital electronic devices. The term ''memory'' is often synonymous with the term ''primary storage'' or '' main memory''. An archaic synonym for memory is store. Computer memory operates at a high speed compared to storage that is slower but less expensive and higher in capacity. Besides storing opened programs, computer memory serves as disk cache and write buffer to improve both reading and writing performance. Operating systems borrow RAM capacity for caching so long as not needed by running software. If needed, contents of the computer memory can be transferred to storage; a common way of doing this is through a memory management technique called ''virtual memory''. Modern memory is implemented as semiconductor memory, where data is stored within memory cells built from MOS transistors and other components on an integrated c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE Computer
''Computer'' is an IEEE Computer Society practitioner-oriented magazine issued to all members of the society. It contains peer-reviewed articles, regular columns, and interviews on current computing-related issues. ''Computer'' provides information regarding current research developments, trends, best practices, and changes in the computing profession. Subscriptions of the magazine are provided free of cost to IEEE Computer Society members. ''Computer'' covers all aspects of computer science. Since 2009, it has a digital edition too. The current editor in chief (since 1 January 2020) is Jeff Voas of NIST. Its impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... was 1.94 for 2017, and 3.564 for 2018. The magazine is the recipient of the 2015 APEX Award for Publication Exc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Symposium On Computer Architecture
The International Symposium on Computer Architecture (ISCA) is an annual academic conference on computer architecture, generally viewed as the top-tier in the field. Association for Computing Machinery's Special Interest Group on Computer Architecture (ACM SIGARCH) and Institute of Electrical and Electronics Engineers Computer Society are technical sponsors. ISCA has participated in the Federated Computing Research Conference in 1993, 1996, 1999, 2003, 2007, 2011 and 2015, every year that the conference has been organized. Influential Paper Award The ISCA Influential Paper Award is presented annually at ISCA by SIGARCH and TCCA. The award is given for the paper with the most impact in the field (in the area of research, development, products, or ideas) from the conference 15 years ago. Prior recipients include: * 2022 (For ISCA 2007): Xiaobo Fan, Wolf-Dietrich Weber, Luiz André Barroso. "Power Provisioning for a Warehouse-sized Computer" * 2021 (For ISCA 2006): James Donald, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David A
David (; , "beloved one") (traditional spelling), , ''Dāwūd''; grc-koi, Δαυΐδ, Dauíd; la, Davidus, David; gez , ዳዊት, ''Dawit''; xcl, Դաւիթ, ''Dawitʿ''; cu, Давíдъ, ''Davidŭ''; possibly meaning "beloved one". was, according to the Hebrew Bible, the third king of the United Kingdom of Israel. In the Books of Samuel, he is described as a young shepherd and harpist who gains fame by slaying Goliath, a champion of the Philistines, in southern Canaan. David becomes a favourite of Saul, the first king of Israel; he also forges a notably close friendship with Jonathan, a son of Saul. However, under the paranoia that David is seeking to usurp the throne, Saul attempts to kill David, forcing the latter to go into hiding and effectively operate as a fugitive for several years. After Saul and Jonathan are both killed in battle against the Philistines, a 30-year-old David is anointed king over all of Israel and Judah. Following his rise to power, David ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babak Falsafi
Babak Falsafi is a computer scientist specializing in computer architecture and digital platform design. He is the founding director of EcoCloud at EPFL, an industrial/academic consortium investigating efficient and intelligent data-centric technologies. He is a professor in the School of Computer and Communication Sciences at EPFL. Prior to that he was a professor of electrical and computer engineering at Carnegie Mellon University, and an assistant professor of electrical and computer engineering at Purdue University. He holds a bachelor's degree in computer science, a bachelor's degree in electrical and computer engineering (both summa cum laude) with distinctions from SUNY Buffalo, and a master's degree and PhD in computer science from University Wisconsin - Madison. He has made numerous contributions to computer system design and evaluation including a server architecture which laid the foundation for Sun Microsystems' NUMA machines, technologies to minimize (leakage) power i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seif Haridi
Saif ( ar, سيف, links=no) is an Arabic name that means ''sword'' or ''scimitar''. also, it means the protector of something''. Saif , SAIF, or Seif may also refer to: Military *Arab sword, an Arabian sword of pre-Islamic origin *Scimitar, a curved sword associated with Middle Eastern, South Asian, or North African cultures Science and technology * HL7 Services Aware Interoperability Framework * Seif dune, a type of sand dune * Spatial Archive and Interchange Format Organizations * Shanghai Advanced Institute of Finance * Social Enterprise Investment Fund * State Accident Insurance Fund Given name * Saif Ali Khan, Bollywood actor * Saif al-Adel, Egyptian al-Qaeda member * Saif al-Islam Gaddafi, son of former Libyan politician Muammar Gadaffi * Saif al-Arab Gaddafi, son of former Libyan politician Muammar Gadaffi * Saif Saaeed Shaheen (born 1982), steeplechase runner * Saif bin Zayed Al Nahyan, a politician from the United Arab Emirates * Saif bin Sultan, Imam of the Iba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anders Landin
Anders is a male name in Scandinavian languages and Fering North Frisian, an equivalent of the Greek Andreas ("manly") and the English Andrew. It originated from Andres via metathesis. In Sweden, Anders has been one of the most common names for many centuries, earliest attested in 1378. It was common for priests and farmers during medieval times. According to Statistics Sweden, as of 31 December 2002 it ranks 4th among the male names. The great frequency of this name at the point in time (around 1900) when patronymics were converted into family names is the reason why 1 out of every 30 Swedes today is called Andersson. The name day of Anders in the Scandinavian calendar is 30 November, and in the old peasant superstition that day was important for determining what the Christmas weather would be. If it was very cold on 30 November there would be much sleet on Christmas (and vice versa). In Denmark Donald Duck's name is ''Anders And''. The Fering name Anders may have been bor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josep Torrellas
Josep Torrellas (born 1963, Montblanc, Spain) is Professor and Willett Faculty Scholar in the Department of Computer Science and a research faculty for the Universal Parallel Computing Research Center at the University of Illinois Urbana–Champaign. Torrellas's research area is computer architecture, focusing on speculative multithreading, multiprocessor organization, integration of processors and memory, and architectural support for software debuggability and machine reliability. He has been involved in the Stanford DASH and the Illinois Cedar multiprocessor projects, and led the Illinois Aggressive COMA and FlexRAM Intelligent Memory projects. Torrellas has contributed to many NSF, DARPA and DOE funding initiatives. The Aggressive COMA research project was selected as one of the "Eight Point-Design Studies" that DARPA, NSF, NSA and NASA supported in the mid-nineties in a nationwide effort to accelerate the arrival of a petascale machine. He has received as lead PI several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiprocessor
Multiprocessing 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. There are many variations on this basic theme, and the definition of multiprocessing can vary with context, mostly as a function of how CPUs are defined ( multiple cores on one die, multiple dies in one package, multiple packages in one system unit, etc.). According to some on-line dictionaries, a multiprocessor is a computer system having two or more processing units (multiple processors) each sharing main memory and peripherals, in order to simultaneously process programs. A 2009 textbook defined multiprocessor system similarly, but noting that the processors may share "some or all of the system’s memory and I/O facilities"; it also gave tightly coupled system as a synonymous term. At the operating system level, ''multiprocessing'' is som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fredrik Dahlgren
Fredrik is a masculine Germanic given name derived from the German name ''Friedrich'' or Friederich, from the Old High German ''fridu'' meaning "peace" and ''rîhhi'' meaning "ruler" or "power". It is the common form of Frederick in Norway, Finland and Sweden. The name means "peaceful ruler" The most common variant spelling of this name is Frederik which is used in Denmark, although the English spelling Frederick is more common than either. Fredrik replaced the Anglo-Saxon name Freodheric, and has been a rare first name in England since this time. In Sweden, Fredrik first fell into usage in the 14th century, and became increasingly common after the 18th century. It is the 19th most popular male name in Sweden and the 41st most popular in Norway. |
Uniform Memory Access
Uniform memory access (UMA) is a shared memory architecture used in parallel computers. All the processors in the UMA model share the physical memory uniformly. In an UMA architecture, access time to a memory location is independent of which processor makes the request or which memory chip contains the transferred data. Uniform memory access computer architectures are often contrasted with non-uniform memory access (NUMA) architectures. In the NUMA architecture, each processor may use a private cache. Peripherals are also shared in some fashion. The UMA model is suitable for general purpose and time sharing applications by multiple users. It can be used to speed up the execution of a single large program in time-critical applications. Types of architectures There are three types of UMA architectures: * UMA using bus-based symmetric multiprocessing (SMP) architectures; * UMA using crossbar switches; * UMA using multistage interconnection networks. hUMA In April 2013, the term hUMA ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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