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MAP Background Information

[A logo showing the University of Cambridge Crest]



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Purpose

The Materials Algorithms Project serves as a centre for the "validation" and distribution of algorithms of use in the modelling of materials, in the context of materials science and metallurgy. Validation in this context means that effort has been expended to check that the program reproduces the example output from the example inputs, that there is a reasonable level of documentation, and that appropriate references are provided.

The MAP Library consists of a perpetual library of elementary subroutines that enables the user to develop new concepts using existing methods as a foundation. The software may be written in any standard programming language.

MAP originated from a joint project of the University of Cambridge and the National Physical Laboratory. It is a non-profitmaking venture which will distribute the library at cost. The project was sponsored for four years by the Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom. It is now run without explicit funding, for the good of the subject.

MAP Founder Members include :-

University of Cambridge

  • H. K. D. H. Bhadeshia
  • R. Thomson
  • G. Rees
  • J. Wilkins
  • S. Cardie
  • C.A. Walsh

National Physical Laboratory

  • T. Barry
  • H. Davies
  • A. Dinsdale
  • S. Hodson
  • B. Roebuck

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Benefits

  • Access to algorithms for modelling materials properties.
  • Makes published work more accessible.
  • Removes need for duplication of effort.
  • Modular library to permit the construction of new models or integration into your existing software.
  • Complete programs and example data available.
  • Mechanism for the publication of source code.

Purpose | MAP benefits | How to use MAP | Downloading | Contributing | Contact info. | Links

Using this site

Organisation of the site

The site is split into several libraries, divided broadly by subject. Each library is further subdivided into sub-libraries for complete programs, subroutines and functions; a master index is provided for each sub-library. Following the link for a particular routine will give the complete documentation for that routine in HTML format. An annotated example of the layout is provided.

Routine naming follows the pattern :-

MAP_LIBNAME_ROUTNAME

where LIBNAME is the library identifier and ROUTNAME is the unique identity given to the routine. For example, MAP_CRYSTAL_ANGLEE is routine ANGLEE from the crystallography sub-library of MAP.

A complete list of libraries is available on the MAP contents page.


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How to download files

Clicking on the downloading link will invoke your browser's downloading procedure; you should select a suitable target directory. The files follow the naming convention identity.tar, where identity is the unique name of the MAP routine; for example, MAP routine MAP_CRYSTAL_ANGLEE is packed as anglee.tar.

Average filesize is approximately 40 kbytes, with the maximum around 300 kbytes.

Format of MAP files

MAP routines are provided in Unix tar format. In general four documents are packed in each file :-

Source code
FORTRAN 77 or 90 source code have file extension .f
C source code has file extension .c

Documentation
Provided in three formats :-
ASCII text file; file extension .txt
Plain TeX; file extension .tex
Postscript; file extension .ps

These are unpacked using the Unix command :-

tar -xvof identity.tar

e.g. having downloaded anglee.tar, it is unpacked by typing :-

tar -xvof anglee.tar

This will give a response similar to :-

 x anglee-b.f, 2961 bytes, 6 tape blocks
 x anglee-b.txt, 3678 bytes, 8 tape blocks
 x anglee.ps, 27969 bytes, 55 tape blocks
 x anglee.tex, 5144 bytes, 11 tape blocks

indicating that the files have been successfully unpacked and are ready for use.


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Participating in MAP

Advice for contributors

We actively encourage MAP users to contribute their own source code and data. The source code may be written in any standard programming language; however, FORTRAN or C/C++ is preferred. Source code in FORTRAN should be ANSI-standard FORTRAN 77 or FORTRAN 90, although older and non-standard versions of FORTRAN may also be accepted. An executable program, rather than the source code, may also be submitted for inclusion in MAP provided it does not contain any code from commercial software libraries, such as the NAG library.

Potential contributors should, in the first instance, read the Advice for Contributors document and contact Website administration <map@msm.cam.ac.uk> with a proposal, which should include at least :-

  • A brief statement of the application and scope of the code.
  • A description of the hardware and operating system(s) on which the code has been tested, and the compiler(s) used.
  • Details of any publications in which results generated by the code are presented (Note that it is not necessary to provide copies of papers, etc themselves).

All donors will be fully acknowledged in the documentation.

Note that the Code Donor Agreement must be signed and returned to MAP before software can be accepted for distribution

Standard templates for MAP documentation

Standard template-files for producing a MAP web page and accompanying documentation are now available and can be viewed and downloaded from this website. Please use these templates when producing new documentation for MAP, as this will help to maintain a standard format and ensure that links to other web pages are correctly set.

Purpose | MAP benefits | How to use MAP | Downloading | Contributing | Contact info. | Links

Contact information

General queries about the MAP website should be directed to the Website Administrator at the address below. We regret that we are unable to answer any queries regarding the contents of the MAP Library.

MAP Website administration

Professor H. K. D. H. Bhadeshia
Department of Materials Science and Metallurgy
University of Cambridge
Pembroke Street
Cambridge CB2 3QZ, U. K.

Purpose | MAP benefits | How to use MAP | Downloading | Contributing | Contact info. | Links

Links

Information
On-line Calculations
  • Web Elements - the periodic table on the WWW.
  • Chemputer - an interactive calculator for chemistry on the WWW.
Software and Resources

MAP originated from a joint project of the National Physical Laboratory and the University of Cambridge and is a non-profitmaking venture which will distribute the library at cost. The project is sponsored by the Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom. The National Physical Laboratory is operated on behalf of the DTI by NPL Management Ltd, a wholly-owned subsidiary of Serco Group plc.