Definitions beginning with G

Greenwich Civil Time (GCT) - permalink - collapse

All > Technology > Telecommunications

Synonym Greenwich Mean Time (GMT). Obsolete term. See Coordinated Universal Time.
ATIS - Cite This Source - This Definition
Browse Related Terms: external timing reference, Greenwich Mean Time (GMT), Universal Time (UT), World Time, ZULU

Greenwich Mean Time (GMT) - permalink - collapse

All > Technology > Telecommunications

Mean solar time at the meridian of Greenwich, England, formerly used as a basis for standard time throughout the world. Obsolete term. Synonym Greenwich Civil Time. See Coordinated Universal Time.
ATIS - Cite This Source - This Definition
Browse Related Terms: external timing reference, Greenwich Civil Time (GCT), Universal Time (UT), World Time, ZULU

grep - permalink - collapse

All > Technology > Programming > Perl

Originally from the old Unix editor command for "Globally search for a Regular Expression and Print it", now used in the general sense of any kind of search, especially text searches. Perl has a built-in grep function that searches a list for elements matching any given criterion, whereas the grep(1) program searches for lines matching a "regular expression" in one or more files.
Perl - Cite This Source - This Definition
Browse Related Terms: arithmetical operator, device, GID, Group, man, Operating System, POSIX, shebang, superuser

Grey Hat SEO - permalink - collapse

All > Technology > Search > SEO / Search Marketing

SEO using both Black Hat and White Hat techniques.
SEO Glossary.com - Cite This Source - This Definition
Browse Related Terms: Black Hat SEO, Ethical SEO, Niche, SEO, White Hat SEO

GRIB - permalink - collapse

All > Science > Weather

(Gridded Binary Format) - A format used for meteorological data. Typically used in the past for computer generated model data but will be used increasingly in the future for forecaster generated data.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: AGDISP, Climate Model, ECMF, EMC, Forecast Guidance, FSCBG, Interpolate, MDLS, VVSTORM

Grid - permalink - collapse

All > Science > Climate Change

Grid (Gridded field) A grid is a finite collection of points to which the meteorological variables used in a numerical model, or interpolated from observations, apply. A field of such regular values (points) is termed gridded field.
NSIDC - Cite This Source - This Definition
Browse Related Terms: anomaly, Average value, Climate, Climate variability, field, inversion, Meteorological element, Meteorology, parameter, Upper atmosphere, Weather, World Meteorological Organization program

All > Science > Water

A system of interconnected power lines and generators that is managed so that the generators are dispatched as needed to meet the requirements of the customers connected to the grid at various points. Gridco is sometimes used to identify an independent company responsible for the operation of the grid.

Bureau of Reclamation - Cite This Source - This Definition
Browse Related Terms: Control Area, Coordinated operation, Coordination, Grid operator, Independent System Operator (ISO), Interconnected system, Open access same-time information system (OASIS), Power pool

Grid Component - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

The grid component is a super class of object that represents every managed entity, whether physical or logical, within an enterprise grid. Grid components are recursive, in that they may be aggregated to form other grid components, or decomposed into their constituent grid components.

Examples of grid components include, but are not necessarily limited to - Traditional resources such as servers, switches, disks, arrays and routers. These are considered to be elemental grid components.
- Less obvious resources such as a software distribution or perhaps data.
- Services, such as CRM, ERP etc.
- Everything in between.
Thus, for example, an ERP service may be decomposed into database, application server and web tiers. These may in turn be decomposed into instances that are bound to operating system instances and servers. Each of these is considered to be a grid component. Whether a grid component is viewed as a service or as a resource and depends on context. Each grid component has a life cycle which has to be managed and may encompass a number of phases, including:
- Add
- Configure
- Start
- Stop
- Unconfigure
- Remove
See also: Enterprise Grid, Resource, Service
Open Grid Forum - Cite This Source - This Definition
Browse Related Terms: Compute Element, Decommissioning, GME Component, GME (Grid Management Entity), Network Element, resource, service, Storage Element

Grid Computing - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

A computing architecture that provides computing resources using many computers acting as one virtual computing resource. On the client side, grid computing provides a pool of shared resources, allowing complete transparency as to where and how a task is performed. On the server side, grid computing enables enterprises to provision resources to respond to client requests. Grid computing environments are often typified by:
- Distributed, shared pools of resources to achieve greater performance, scaling, resilience, and utilization
- Flexibility, as components are regularly re-provisioned in line with business goals
- Application or service architectures, such as Service Oriented Architectures (SOAs), which are disaggregated/distributed
- Consolidation into a smaller number of larger resource pools for easier provisioning and greater utilization
- Automation of day-to-day manual maintenance - software installation, patching, upgrading, workload balancing, etc.
- Standardization of components and/or their interfaces, configurations, processes, and applications (see "Virtualization").
Oracle - Cite This Source - This Definition
A type of distributed computing in which a wide-ranging network connects multiple computers whose resources can then be shared by all end users; includes what is often called peer-to-peer computing.
IBM - Cite This Source - This Definition
A type of distributed computing in which a wide-ranging network connects multiple computers whose resources can then be shared by all end-users; includes what is often called "peer-to-peer" computing.
IBM - Cite This Source - This Definition
The use of pools of resources onto which applications or services may be dynamically provisioned and re-provisioned to meet the goals of one or more enterprises, whilst improving both efficiency and agility. Grid computing environments may be typified by
- The use network distributed, shared pools of discrete resources to achieve greater performance, scaling, resilience and utilization
- Flexibility or mutability, as components are regularly repurposed or re-provisioned in line with the business goals for the services that run on them
- A focus on services, rather than on components, as grids turn networks into arbitrarily rich/complex fabrics of resources.
- Application or service architectures which are disaggregated or distributed in nature, for example Service Oriented Architectures (SOAs) and which leverage the properties of the fabric of resources.
- The consolidation of computing components into [typically] a smaller number of larger resource pools to enable easier provisioning and greater resource utilization.
- The standardization of components and/or their interfaces, configurations, processes and applications. Virtualization is an example of this.
Open Grid Forum - Cite This Source - This Definition
Browse Related Terms: Enterprise Grid, Globus, NCSA (The National Center for Supercomputing Applications), OGSA (Open Grid Services Architecture), Pooling, SOA (Service-Oriented Architecture), utility computing, Utility Data Center

All > Technology > Virtualization

An emerging computing model where a large amount of geographically separated, networked computers work like one single abstract infrastructure, able to compute multiple, complex tasks in parallel, required by multiple customers at a time.
virtualization.info - Cite This Source - This Definition
presenting a group of similar computers to job submitters as a single computer image to allow either asynchronous scheduled execution of jobs on the first available system in the group, or to support execution of a individual jobs across multiple physical computers.
Versatile Systems - Cite This Source - This Definition
Browse Related Terms: Autonomic Computing, Clustering, Data Center, I/O, infrastructure, on-demand computing, pervasive computing, ubiquitous computing, utility computing, virtual infrastructure, workload management

GridFTP - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

The Grid File Transfer Program provides high-performance and reliant data transfer.
IBM - Cite This Source - This Definition
Browse Related Terms: command line interface (CLI), Concurrency, FC (Fibre Channel), NAS (Network-Attached Storage), network end points, NTP (Network Time Protocol), parallelism, striping

grid map file - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

A file containing entries mapping certificate subjects to local user names. This file can also serve as a access control list for GSI enabled services and is typically found in /etc/grid-security/grid-mapfile. For more information see the Gridmap section here.

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: GAA configuration file, grid security directory, GSI authorization callout configuration file

Grid operator - permalink - collapse

All > Science > Water

An entity that oversees the delivery of electricity over the grid to the customer, ensuring reliability and safety. A grid operator potentially could be independent of electric utilities or other suppliers. See Independent System Operator.

Bureau of Reclamation - Cite This Source - This Definition
Browse Related Terms: Control Area, Coordinated operation, Coordination, Grid, Independent System Operator (ISO), Interconnected system, Open access same-time information system (OASIS), Power pool

Grid Resource Allocation and Management (GRAM) (GRAM) - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

Comprises a set of WSRF-compliant Web services to locate, submit, monitor, and cancel jobs on Grid computing resources.

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: globusrun-ws, job description, MMJS subjob, multijob, multijob rendezvous, Resource Specification Language (RSL), URL (Universal Resource Locator)

Grids - permalink - collapse

All > Science > Weather

1) Squared off areas across the terrain used to define forecast areas. Often 5x5 or 2.5x2.5 kilometer in size. 2) Digitial forecast databases for meteorological elements, including temperature, wind direction, wind speed and others. Computer programs read these databases to create worded and graphical forecast products used by the public and others.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: AIRMET, ARAM, GEMPAK, JMA, Meteorologist, Meteorology, PMO, Radar Meteorology, RMTN, Synoptic code, WMC, WMO

grid security directory - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

The directory containing GSI configuration files such as the GSI authorization callout configuration and GAA configuration files. Typically this directory is /etc/grid-security. For more information see this.

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: GAA configuration file, grid map file, GSI authorization callout configuration file

Grid Security Infrastructure (GSI) - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

GSI stands for Grid Security Infrastructure and is used to describe the original infrastructure of GT security, which is comprised of SSL, PKI and proxy certificates.

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: CA Certificate, CA (Certificate Authority), CA Signing Policy, Certificate Authority ( CA ), Certificate Revocation List (CRL), certificate subject, End Entity Certificate (EEC), host certificate, proxy certificate, RA (Registrant Authority), service certificate, trusted CAs directory, user certificate

Grief - permalink - collapse

All > Recreation > Games > World of Warcraft

Actions taken to be annoying or to spoil the game experience of someone else.
worldofwar.net - Cite This Source - This Definition
Browse Related Terms: Cheese, FTL, FTW, game master (gm), gg, GM, griefing, lamer, Mod, onyxia

grief counseling - permalink - collapse

All > Medicine > Cancer

(greef KOWN-suh-ling) The process by which a trained counselor or a support group helps a person work through normal feelings of sorrow after a loss, such as the death of a loved one.
National Cancer Institute - Cite This Source - This Definition
Browse Related Terms: anesthetic, bereavement, counseling, depression, genetic counseling, grief (GREEF), pastoral counselor

Griefer - permalink - collapse

All > Recreation > Games > World of Warcraft

A person who purposely tries to annoy or anger other players.
Blizzard Entertainment - Cite This Source - This Definition
A person who purposely tries to annoy or anger other players.
worldofwar.net - Cite This Source - This Definition
Browse Related Terms: 1337 sp34k, Flame, Macro, PST, stfu, Troll, UI

grief (GREEF) - permalink - collapse

All > Medicine > Cancer

The normal response to a major loss, such as the death of a loved one. Grief may also be felt by a person with a serious, long-term illness or with a terminal illness. It may include feelings of great sadness, anger, guilt, and despair. Physical problems, such as not being able to sleep and changes in appetite, may also be part of grief.
National Cancer Institute - Cite This Source - This Definition
Browse Related Terms: anesthetic, bereavement, counseling, depression, genetic counseling, grief counseling, pastoral counselor

griefing - permalink - collapse

All > Recreation > Games > World of Warcraft

Disrupting others gaming experience even though there is no reward for the griefer. (Thus the term "Griefing", causing grief to others)
Stratics - Cite This Source - This Definition
Browse Related Terms: Cheese, FTL, FTW, game master (gm), gg, GM, Grief, lamer, Mod, onyxia

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Greenwich Civil Time (GCT) - permalink - collapse

Greenwich Mean Time (GMT) - permalink - collapse

grep - permalink - collapse

Grey Hat SEO - permalink - collapse

GRIB - permalink - collapse

Grid - permalink - collapse

Grid Component - permalink - collapse

Grid Computing - permalink - collapse

GridFTP - permalink - collapse

grid map file - permalink - collapse

Grid operator - permalink - collapse

Grid Resource Allocation and Management (GRAM) (GRAM) - permalink - collapse

Grids - permalink - collapse

grid security directory - permalink - collapse

Grid Security Infrastructure (GSI) - permalink - collapse

Grief - permalink - collapse

grief counseling - permalink - collapse

Griefer - permalink - collapse

grief (GREEF) - permalink - collapse

griefing - permalink - collapse