Issue 52, 2 March 2006

In this issue:

  • Top Story - Visualization software from NAG used in world's largest climate change experiment
  • Product Information - Coming Soon: Enhanced interoperability between the NAG Library and Maple 10
  • Industry Article - NAG Schools Excel Add-In: Using Excel to Draw Statistically Correct Graphs
  • General Information - Prestigious Wilkinson Prize to be awarded at ICIAM 2007
  • Tips & Hints - NAG Fortran DLL's and the Salford FTN95 Compiler
  • Events - Birmingham
  • Product News - New Implementations

Top Story - Visualization software from NAG used in world's largest climate change experiment

NAG is proud to be part of the largest climate prediction experiment, Climateprediction.net which is currently being promoted by the BBC. Climateprediction.net is a high-profile e-Science research experiment aimed at the accurate modelling of changes in the world's climate over the next fifty years. Tens of thousands of participants all over the world have downloaded the project's climate simulator and are running it using the spare capacity of their desktop PCs.

NAG developed the real-time desktop visualization component of the experiment for its launch in 2003. This enabled users to track the progress of their simulation as cloud cover and temperature changed over the surface of the globe. A technical paper describing this work was presented at the 2004 Eurographics/IEEE TCVG Visualization Symposium and has been published as:

“Visualization For Public-Resource Climate Modeling” http://www.nag.co.uk/doc/TechRep/Pdf/tr1_06.pdf by J.P.R.B. Walton, D. Frame and D.A. Stainforth. Data Visualization 2004 (O. Deussen, C. Hansen, D. Keim and D. Saupe, eds.) pp 103-108. Eurographics Association, 2004.

To read the entire news item please follow this link http://www.nag.co.uk/Market/articles/prcpdn.asp


Product Information - Coming Soon: Enhanced interoperability between the NAG Library and Maple 10

Since the release of Maple 6 in 2000, Maple users have benefited from NAG solvers being tightly integrated into the Maple environment. Today, experts from NAG and Maplesoft have collaborated to develop software that will provide significant additional interoperability between Maple and the NAG Library. The official product launch announcement will be made in the coming months.

If you would like to receive advance notice of the new software by NAG and Maple email us at mailto:nagnews@nag.co.uk to state your interest and we will contact you as soon as further news breaks.


Industry Article - NAG Schools Excel Add-In: Using Excel to Draw Statistically Correct Graphs

A much greater emphasis is being placed on the interpretation of data as opposed to the construction of a simple graph. A pupil must decide what diagrams will be useful and then utilize them to argue either in favor or against an original hypothesis.

Although Microsoft Excel is able to return pre-programmed statistical measures for comparing data including the mean [=AVERAGE(A1:A5)], the median [=MEDIAN(A1:A5)], the range [=MAX(A1:A5)-MIN(A1:A5)] and the standard deviation [=STDEVPA(A1:A5)] its ability to pictorially represent the data to a standard required by educators has been seriously underdeveloped.

NAG Schools Excel Add-In (N-SEA) is an Excel Add-in, accessible through a drop down menu on the Excel toolbar, that allows the user - a pupil or the teacher - to tackle the areas of data representation that were previously unavailable. This allows the class - either individually or led from the front - to focus its energy and discussion on the important analysis without having to waste time and motivation on hand-drawing the relevant graphs.

To read the entire article by Ed Carlin, Wallingford School, Oxfordshire follow this link http://www.nag.co.uk/n-sea/carlinarticle.asp. Further details about N-SEA can be found by clicking here http://www.nag.co.uk/n-sea/


General Information - Prestigious Wilkinson Prize to be awarded at ICIAM 2007

In honor of the outstanding contribution of James Hardy Wilkinson F.R.S. to the field of numerical software, Argonne National Laboratory, the National Physical Laboratory, and the Numerical Algorithms Group award a monetary numerical software prize every four years.

The 2007 $3000 prize will be awarded at ICIAM 2007, the 6th International Congress on Industrial and Applied Mathematics, July 16-20 2007, being held in Zurich, Switzerland. Details of the 2007 Prize competition will appear soon on the NAG web site, and a forthcoming NAGNews issue will carry a link to those details when they become available.

The first Wilkinson Prize was awarded at the 1991 ICIAM Congress to Linda Petzold for DASSL. At the 1995 Congress, the prize was awarded to Chris Bischof and Alan Carle for ADIFOR 2.0, and in 1999, the prize was awarded to Matteo Frigo and Steve Johnson for FFTW. The prize winner in 2003 was Jonathan Shewchuch for Triangle, a two-dimensional mesh generator and Delauney triangulator.

Jim Wilkinson was a great supporter of NAG, particularly in the early formative years, and was a friend and mentor to us. When NAG Limited moved to its present Oxford premises in 1988, we had the pleasure of being able to name the building in his honour. His wife Heather attended the official opening in July 1989. The NAG Fortran Manual still retains the original Foreword written by Jim Wilkinson and his great friend, Leslie Fox.

To read more about the Wilkinson Prize follow this link http://www.nag.co.uk/other/wilkinsonprize.asp


Tips & Hints - NAG Fortran DLL's and the Salford FTN95 Compiler

The Salford FTN95 compiler is heavily used in the academic community where it is widely regarded for its thorough debugging and standard conformance capabilities. As NAG is also deeply embedded in the academic community it made sense to both NAG and Salford to ensure that the NAG library worked with the FTN95 compiler.

The appropriate library is the NAG DLL, FLDLL204Z. In the Users' Note for this implementation we give advice on how FTN95 users might link to the NAG DLLs. In summary we say:

     "Use the /IMPORT_LIB command line switch as follows:
     ftn95 myprog /import_lib mydir\dll20dds.dll /import_lib mydir\dll20dd.dll
     where mydir is the location of the DLLs.
     Slink myprog.obj mydir\dll20dds.dll mydir\dll20dd.dll"

The information we give is correct, even with the latest version of FTN95. However we have received a couple of support questions concerning the apparent malfunctioning of NAG routines when called in this manner. Investigation revealed that the use of the /check or /checkmate option together with this construct causes the resultant program to execute incorrectly. This is a compiler bug. It appears to be safe to use the /bounds_check option.

For more information on NAG's Fortran DLL's please follow this link http://www.nag.co.uk/numeric/Num_DLLhelp.asp


Events - Birmingham
  • The Education Show: 9 - 11 March 2006, Birmingham
    In March NAG will also be exhibiting at the UK's leading educational resources event. The show will be addressing key issues in education across all subject areas, with a particular focus on core secondary curriculum areas such as English, Maths and Science. NAG experts will be at the event showing the recently launched NAG Schools Excel Add-ins product and NAG's numerical libraries.

    For further information on the event, visit: http://www.education-show.co.uk/

Product News - New Implementations

NAG is committed to offering new implementations of its broad range of numerical and statistical software, compilers and tools. Since the last edition of NAGNews platform availability has increased for the NAG Parallel Library.

The NAG C Library, Mark 8 is now also available for the following platforms:

  • Linux x86-32 (MKL) using the gcc 3.2.2 Compiler

The NAG Fortran Library, Mark 21 is now also available for the following platforms:

  • AMD-64 Linux64 using the NAGWare f95 Compiler
  • AMD-64 Linux64 using the pgf77/pgf90 v 5.2 Compiler
  • AMD-64 Linux64 using the g77 v 3.3.3 Compiler
  • AMD-64 Linux64 using the Pathscale EKO v Compiler
  • Intel EM64T Linux64 using the Intel Fortran v 8.1 Compiler
  • Intel-32 Windows using the Lahey/Fujitsu f95 Compiler
  • SGI MIPS 32-bit using the NAGWare f95 Compiler

The NAG Fortran 90 Library, Release 4 is now also available for the following platform:

  • Intel-32 Windows using the Intel Fortran v 8.1 Compiler

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