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Topic: SECD machine


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 SECD machine -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-07)
The SECD machine is a highly influential (Click link for more info and facts about virtual machine) virtual machine intended as a target for (Click link for more info and facts about functional programming language) functional programming language compilers.
Hence the SECD machine is often presented in a more detailed form, such as Peter Henderson's (Click link for more info and facts about Lispkit Lisp) Lispkit Lisp compiler, which has been distributed since 1980.
The memory organization of the SECD machine is similar to the model used by most functional language (Someone who mediates between speakers of different languages) interpreters: a number of memory cells, each of which can hold either an atom (a simple value, for example 13), or represent an empty or non-empty list.
www.absoluteastronomy.com /encyclopedia/s/se/secd_machine3.htm   (1129 words)

  
 Knowledge King - Virtual machine   (Site not responding. Last check: 2007-11-07)
Because versions of the virtual machine are written for various computer platformss, any application written for the vitual machine can be operated on any of the platforms, instead of having to produce separate versions of the application for each computer and operating system.
The term virtual machine is now also used to refer to the environment created by an emulator, where software is used to emulate an operating system for the end user, while the computer runs its own native operating system.
For example, the p-Code machine specification (one of the first, used for support of Pascal) was a description of a specific set of capabilities and behaviors that programmers could use to write programs that would run on any computer running virtual machine software that correctly implemented the specification.
www.knowledgeking.net /encyclopedia/v/vi/virtual_machine.html   (699 words)

  
 SECD machine: Definition and Links by Encyclopedian.com - All about SECD machine
The machine was the first to be specifically designed to evaluate lambda calculus expressions.
In 1989 researchers at the University of Calgary worked on a hardware implementation of the machine.
The memory organization of the SECD machine is similar to the model used by most functional language interpreters: a number of memory cells, each of which can hold either an atom (a simple value, for example 13), or represent an empty or non-empty list.
www.encyclopedian.com /se/SECD-machine.html   (1030 words)

  
 Virtual machine - Wikipedia
A virtual machine is a piece of computer software designed to reproduce a specific set of computer behaviors and capabilities other than the ones native to the computer or operating system on which the software itself is running.
Some virtual machines are emulators; these allow software written for one machine to run on another.
For example, the P-code machine specification (one of the first) was a description of a specific set of capabilities and behaviors that programmers could use to write programs that would run on any computer running virtual machine software that correctly implemented the specification.
nostalgia.wikipedia.org /wiki/Virtual_machine   (357 words)

  
 [No title]
SECD Virtual Machine An interesting approach to programming language implementation is to compile a programs of a language to the code of a virtual machine.
SECD Architecture Purpose: To execute the complied code on an abstract machine.
The SECD machine is built using four stacks: s Stack used for evaluation of expressions e Environment used to store the current value list c Control used to store the instructions d Dump used to store suspended invocation context.
www.cs.ualberta.ca /~you/courses/325/Mynotes/Fun/SECD-slides.html   (1394 words)

  
 A Rational Deconstruction of Landin's SECD Machine   (Site not responding. Last check: 2007-11-07)
However, and even though variants of the SECD machine have been presented, derived, and invented, the precise rationale for its architecture and modus operandi has remained elusive.
The evaluation function underlying the SECD machine provides a precise rationale for its architecture: it is an environment-based eval-apply evaluator with a callee-save strategy for the environment, a data stack of intermediate results, and a control delimiter.
Each of the components of the SECD machine (stack, environment, control, and dump) is therefore rationalized and so are its transitions.
www.brics.dk /RS/03/33   (223 words)

  
 ABSTRACT MACHINE - Definition
A processor design which is not intended to be implemented as hardware, but which is the notional executor of a particular intermediate language (abstract machine language) used in a compiler or interpreter.
A virtual machine is an abstract machine for which an interpreter exists.
Such abstract machines are not intended to be constructed as hardware but are used in thought experiments about computability.
www.hyperdictionary.com /dictionary/abstract+machine   (152 words)

  
 SECD machine   (Site not responding. Last check: 2007-11-07)
The SECD machine is a highly influential virtualmachine intended as a target for functional programminglanguage compilers.
The memory organization of the SECD machine is similar to the model used by most functional language interpreters : a number of memory cells,each of which can hold either an atom (a simple value, for example 13), or represent an empty or non-emptylist.
In the SECD machine, cell 0 always implicitly represents the empty list, so no special tag value is needed to signal anempty list (everything needing that can simply point to cell 0).
www.therfcc.org /secd-machine-221709.html   (980 words)

  
 Virtual machine -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-07)
This provides each user with the illusion of having an entire (A machine for performing calculations automatically) computer, but one that is their "private" machine, isolated from other users, all on a single physical machine.
The second, and now more common, meaning of virtual machine is a piece of computer software that isolates the (The work of applying something) application being used by the user from the (A machine for performing calculations automatically) computer.
Because versions of the virtual machine are written for various (Click link for more info and facts about computer platform) computer platforms, any application written for the virtual machine can be operated on any of the platforms, instead of having to produce separate versions of the application for each computer and operating system.
www.absoluteastronomy.com /encyclopedia/v/vi/virtual_machine.htm   (1165 words)

  
 Problem Determination Guide
A problem that may occur is that logged-in users are away from their machine so long that their tickets expire and the files are removed by rmxcred (during a weekend for example).
The simplest way to change the hostname of a DCE client machine is to unconfigure it, change the hostname, and then reconfigure it back into the cell.
Examples are ncacn_ip_tcp and ncacn_unix_stream, in the case where the client machine fails or the client machine is abruptly removed from the network, while the client has an active context handle being maintained by the server.
www.umiacs.umd.edu /~jhu/DOCS/DCEDFS2.2/A3U2L/A3U2LM31.HTM   (9322 words)

  
 Virtual machine - Encyclopedia, History, Geography and Biography   (Site not responding. Last check: 2007-11-07)
The host software which provides this capability is often referred to as a virtual machine monitor or hypervisor.
Perl (the virtual machine of Perl 5 is not separately accessible)
Parrot (a virtual machine which is currently developed for interpreted dynamic languages (Perl 6, Ruby,...).
www.arikah.net /encyclopedia/Virtual_machine   (1001 words)

  
 The Tail Recursive SECD Machine
The paper includes a proof that the semantics defined by the SECD machine is equivalent to a recursively defined function which implements applicative order evaluation of lambda terms.
The SECD machine implements the caller saves convention, which means that the callee is free to do as it pleases with the SEC (stack, environment, and code) part of an SECD's machine state.
The TR-SECD machine within implements a callee saves convention, which means that the callee must ensure that a return to the caller results in the restoration of the SEC part of the TR-SECD machine.
www.cs.utexas.edu /users/boyer/ftp/nqthm/trsecd/trsecd.html   (2298 words)

  
 Virtual machine - Wikipedia, the free encyclopedia
Because versions of the virtual machine are written for various computer platforms, any application written for the virtual machine can be operated on any of the platforms, instead of having to produce separate versions of the application for each computer and operating system.
The VMware, twoOStwo and SVISTA packages do the same thing on modern PCs, trapping all hardware accesses and simulating all of a motherboard except for the processor.
Notably, there is no execution mode where all privileged machine instructions always trap, which would allow per-instruction virtualization.
en.wikipedia.org /wiki/Virtual_machine   (910 words)

  
 A Lambda-Revelation of the SECD Machine   (Site not responding. Last check: 2007-11-07)
We present a simple inter-derivation between lambda-interpreters, i.e., evaluation functions for lambda-terms, and abstract reduction machines for the lambda-calculus, i.e., transition functions.
The derivation applies not merely to connect independently known lambda-interpreters and abstract machines, it also applies to construct the abstract machine corresponding to a lambda-interpreter and to construct the lambda-interpreter corresponding to an abstract machine.
In this article, we treat in detail the canonical example of Landin's SECD machine and we reveal its denotational content: the meaning of an expression is a partial endo-function from a stack of intermediate results and an environment to a new stack of intermediate results and an environment.
www.brics.dk /RS/02/53/index.html   (189 words)

  
 [No title]   (Site not responding. Last check: 2007-11-07)
A computer for executing compiled Lisp, implementing the SECD virtual machine model.
The design specification comes from the SECD computer, a basic Lisp implementation from Lispkit Lisp (Henderson, Jones and Jones, Oxford PRG Technical Manual 32, 1995).
The SECD is a much simpler architecture with a very basic heap-memory system.
www.cs.indiana.edu /hmg/studies/SECD/secd.html   (150 words)

  
 Graph reduction machine - Wikipedia, the free encyclopedia
A graph reduction machine is a special-purpose computer built to perform combinator calculations by graph reduction.
Examples include the SKIM ("S-K-I machine") computer, built at the University of Cambridge Computer Laboratory, and the multiprocessor GRIP ("Graph Reduction In Parallel") computer, built at University College London.
Clarke, P. Gladstone, C. MacLean, A. Norman: SKIM - The S, K, I Reduction Machine.
www.wikipedia.org /wiki/Graph_reduction_machine   (94 words)

  
 SECD Machine Encyclopedia Article, Definition, History, Biography   (Site not responding. Last check: 2007-11-07)
Looking For secd machine - Find secd machine and more at Lycos Search.
Find secd machine - Your relevant result is a click away!
Look for secd machine - Find secd machine at one of the best sites the Internet has to offer!
www.karr.net /encyclopedia/SECD_machine   (1207 words)

  
 [No title]
Machine operations are defined in terms of 4-tuple transformations on S, E, C, and D. Relatively abstract (distant from current hardware).
Code generated can be either for a virtual machine or for the target machine.
However, this kind of operation is becoming less common because of the move towards RISC machines.
www.cs.bath.ac.uk /~jap/CM30171/Old-exam-papers/c73-1990   (1591 words)

  
 The SECD Machine   (Site not responding. Last check: 2007-11-07)
In 1964 Peter Landin proposed an abstract machine, called the SECD machine, for the mechanical evaluation of lambda expressions.
A set of rules, described shortly, specify how to transform one SECD machine state into the next (by moving items between stacks, looking up values in the environment, etc).
There are seven transformation rules that, taken together, define the SECD machine's operation.
www.cs.vassar.edu /~cs245/Asmts/secd.html   (615 words)

  
 Encyclopedia: SECD machine   (Site not responding. Last check: 2007-11-07)
The Haskell programming language logo Functional programming is a programming paradigm that treats computation as the evaluation of mathematical functions.
In computer science, a linked list is one of the fundamental data structures used in computer programming.
The University of Calgary is a university of approximately 28,000 students located in the north-western part of Calgary, Alberta, Canada (pop.
www.nationmaster.com /encyclopedia/SECD-machine   (1299 words)

  
 SECD virtual machine for pure_LISP   (Site not responding. Last check: 2007-11-07)
This document describes an modified SECD virtual machine, used for implementation of the pure_LISP language.
SECD codes are packed togeder with 1 or 2 parameters into 32-bit integers.
In my SECD machine there is special mnemonicks for the positive integers, bigger than 2^24.
skelet.ludost.net /sec/secd.html   (2040 words)

  
 Problem Determination Guide
The default for the Security Server (secd) checkpoint interval, which is the interval for secd to flush its update log to disk, is two hours.
To change this interval, start secd from the command line with the -cpi option.
If you have set your password policy to expire at a certain time or have set the password lifetime to a specific value, you must be aware that the secd principal, self principals for hosts, and the cell_admin principal is also bound to this limit.
www-306.ibm.com /software/network/dce/library/publications/dceaix_22/a3u2l/A3U2LM91.HTM   (1195 words)

  
 [No title]   (Site not responding. Last check: 2007-11-07)
The machine extend's Landin's secd machine to support multiple concurrent expression evaluation, non-determinism in the form of the fair merge, and a full range of input and output devices.
Their model of a simplistic, platform-independent stack machine is well-suited for portability, though at the expense of execution speed.
Since one big interest of mine is in running virtual machines (language view) directly on the metal, the information and views on virtual machines (OS view) are very much of interest to me, since I personally view such things as a natural part/component of a true VM (my view).
lists.tunes.org /archives/virtmach/1999-November.txt   (10240 words)

  
 Citations: - functional, Polymorphism, LCF, January (ResearchIndex)   (Site not responding. Last check: 2007-11-07)
The four stack like runtime structures it supports are known to be a control structure C which, as a sequence of terms or instructions, holds the program text to be executed; a workspace stack S which (temporarily) holds evaluated terms and eventually the result of the computation; an....
The machine provides a machine independent memory model on top of which there is a closure model for the representation of functional....
The abstract machine interface is written as a signature in ML: signature machine = sig type Label val select : int unit val apply : unit unit val tailrecur : int unit val startrecord : int unit val endrecord : unit unit.
citeseer.ist.psu.edu /context/50198/0   (2905 words)

  
 SECD machine - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-07)
Hence the SECD machine is often presented in a more detailed form, such as
University of Calgary worked on a hardware implementation of the machine.
The memory organization of the SECD machine is similar to the model used by most functional language
evil-wire.luvfeed.org /cache/3937   (997 words)

  
 VisualWorks: Closures   (Site not responding. Last check: 2007-11-07)
Peter Landin's paper on the SECD machine, "The Mechanical Evaluation of Expressions" was published in the Computer Journal in 1964.
But I know (because Peter was a professor of mine at QMW) that the implementation of the SECD machine pre-dates this by a few years, putting it in the 1959/60 timeframe.
Now the SECD machine stands for Stack Environment Code and Dump.
wiki.cs.uiuc.edu /VisualWorks/Closures   (2444 words)

  
 SECD MACHINE   (Site not responding. Last check: 2007-11-07)
Source: compiled by the editor from various references; see credits.
Specialty definitions using "SECD MACHINE": FP/M, FPM ♦ Lispkit ♦ Stack Environment Control Dump machine.
-3 letters: cadences, chicaned, chicanes, echidnae, echidnas, encashed, enchased, endemics, headsmen, inmeshed, machined, machines, mechanic, sachemic.
www.websters-online-dictionary.org /SE/SECD+machine.html   (184 words)

  
 SECD Mania collection   (Site not responding. Last check: 2007-11-07)
Lazy_0 - Commands and data structures are implemented and tested in meta_machine and in SECD machine for lazy evaluation purpouses.
Machines from the package may be used for educational purposes in areas such as functional programing, computer design, system programming....
Other possibility is to use some of these SECD machines as starting point for some practical implementation of your own functional language.
skelet.ludost.net /collection.html   (594 words)

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