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What (who) is Parallel Virtual Machine - definition

PVM

Parallel Virtual Machine

<parallel, networking, tool> (PVM) 1. A software system designed to allow a network of heterogeneous machines to be used as a single distributed parallel processor. PVM was developed by the University of Tennessee, The {Oak Ridge National Laboratory} and the Emory University. http://epm.ornl.gov/pvm/. Usenet newsgroup: news:comp.parallel.pvm. 2. The intermediate language used by the Gambit compiler for Scheme. [And Multilisp?] (1995-01-30)

System virtual machine

OPERATING SYSTEM COMPONENT

Sytem virtual machine

In computing, a system virtual machine is a virtual machine that provides a complete system platform and supports the execution of a complete operating system (OS). These usually emulate an existing architecture, and are built with the purpose of either providing a platform to run programs where the real hardware is not available for use (for example, executing on otherwise obsolete platforms), or of having multiple instances of virtual machines leading to more efficient use of computing resources, both in terms of energy consumption and cost effectiveness (known as hardware virtualization, the key to a cloud computing environment), or both.

https://en.wikipedia.org/wiki/System_virtual_machine

Parallel RAM

ABSTRACT COMPUTER FOR DESIGNING PARALLEL ALGORITHMS

Parallel random access machine; Exclusive Read Exclusive Write; Concurrent Read Exclusive Write; Concurrent Read Concurrent Write; EREW; CRCW; Parallel random access model; Concurrent read, exclusive write; ERCW; Concurrent read, concurrent write; Exclusive read, concurrent write; Exclusive read, exclusive write; CRCW-PRAM; CRCW PRAM; EREW-PRAM; EREW PRAM; CREW-PRAM; CREW PRAM; ERCW-PRAM; ERCW PRAM; Concurrent random access machine; Parallel Random Access Machine; Parallel random-access machine

In computer science, a parallel random-access machine (parallel RAM or PRAM) is a shared-memory abstract machine. As its name indicates, the PRAM is intended as the parallel-computing analogy to the random-access machine (RAM) (not to be confused with random-access memory).

https://en.wikipedia.org/wiki/Parallel_RAM

Wikipedia

Parallel Virtual Machine

Parallel Virtual Machine (PVM) is a software tool for parallel networking of computers. It is designed to allow a network of heterogeneous Unix and/or Windows machines to be used as a single distributed parallel processor. Thus large computational problems can be solved more cost effectively by using the aggregate power and memory of many computers. The software is very portable; the source code, available free through netlib, has been compiled on everything from laptops to Crays.

PVM enables users to exploit their existing computer hardware to solve much larger problems at less additional cost. PVM has been used as an educational tool to teach parallel programming but has also been used to solve important practical problems. It was developed by the University of Tennessee, Oak Ridge National Laboratory and Emory University. The first version was written at ORNL in 1989, and after being rewritten by University of Tennessee, version 2 was released in March 1991. Version 3 was released in March 1993, and supported fault tolerance and better portability.

PVM was a step towards modern trends in distributed processing and grid computing but has, since the mid-1990s, largely been supplanted by the much more successful MPI standard for message passing on parallel machines. PVM is free software, released under both the BSD License and the GNU General Public License.

https://en.wikipedia.org/wiki/Parallel Virtual Machine