Computing Science

• Global processing unit, a generic name for a distributed computing
  Distributed computing
  Distributed computing is a field of computer science that studies distributed systems. A distributed system consists of multiple autonomous computers that communicate through a computer network. The computers interact with each other in order to achieve a common goal...
  
   project
• Gnutella processing unit, a distributed computing client
• Graphics processing unit
  Graphics processing unit
  A graphics processing unit or GPU is a specialized circuit designed to rapidly manipulate and alter memory in such a way so as to accelerate the building of images in a frame buffer intended for output to a display...
  
  , a special stream processor
  Stream processing
  Stream processing is a computer programming paradigm, related to SIMD , that allows some applications to more easily exploit a limited form of parallel processing...
  
   used in computer graphics hardware

Power Engineering

• Ground power unit, a device used on the ground at airport
  Airport
  An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...
  
  s to supply aircraft
  Aircraft
  An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.Although...
  
   without an APU
  Auxiliary power unit
  An auxiliary power unit is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft, as well as some large land vehicles.-Function:...
  
   with electric power
  Electric power
  Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt.-Circuits:Electric power, like mechanical power, is represented by the letter P in electrical equations...
  
  . It is also used by aircraft with APUs if the airport authority does not permit the usage of APUs at its docks or if the carrier wishes to save on the use of jet fuel (which APU's use). The most common form of GPU is a small vehicle or trailer with a diesel generator
  Electrical generator
  In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge to flow through an external electrical circuit. It is analogous to a water pump, which causes water to flow...
  
   although units fueled with gasoline are not unknown. There are also all-electric units that are powered off of the local electrical grid.
• Guitar Processing Unit (reference)

Other

• Gosudarstvennoye Politicheskoye Upravlenie (State Political Directorate), the secret police
  Secret police
  Secret police are a police agency which operates in secrecy and beyond the law to protect the political power of an individual dictator or an authoritarian political regime....
  
   of the RSFSR and USSR
  Soviet Union
  The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....
  
   until 1934.
• General Public Utilities, a defunct New Jersey-based electric utility purchased by FirstEnergy
  FirstEnergy
  FirstEnergy Corp. , is a diversified energy company headquartered in Akron, Ohio. Its subsidiaries and affiliates are involved in the generation, transmission, and distribution of electricity, as well as energy management and other energy-related services...
  
   Corporation in 2001, and famous as the original owners of the Three Mile Island nuclear plant.
• The Global Peace and Unity
  Global Peace and Unity
  The Global Peace and Unity event is an annual two-day conference held at the ExCeL Exhibition Centre in Royal Victoria Dock, London and organized by the Islam Channel. It is the largest Muslim, interfaith and multicultural event of its kind in Europe, having attracted over 55,000 visitors from...
  
   event, an annual Muslim conference held at ExCeL Exhibition Centre
  ExCeL Exhibition Centre
  ExCeL London is an exhibitions and conference centre in the London Borough of Newham, England. It is located on a site on the northern quay of the Royal Victoria Dock in London Docklands, between Canary Wharf and London City Airport.- History :The centre was built by Sir Robert McAlpine, opened...
  
   in London
  London
  London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...
  
  .
• Guinea pig units used in pharmacology
  Pharmacology
  Pharmacology is the branch of medicine and biology concerned with the study of drug action. More specifically, it is the study of the interactions that occur between a living organism and chemicals that affect normal or abnormal biochemical function...
  
  
• Gatwick Ports Unit, the Special Branch
  Special Branch
  Special Branch is a label customarily used to identify units responsible for matters of national security in British and Commonwealth police forces, as well as in the Royal Thai Police...
  
   unit based at Gatwick Airport