NAG Fortran Library, Mark 21

FLMI621D9L - License Managed

Intel-based Mac, Mac OS X 64, NAGWare f95, Double Precision

Installer's Note


1. Introduction

This Installer's Note is essential reading for whoever is responsible for the installation of this implementation of the NAG Fortran Library. It is available together with the Users' Note (un.html) on the distribution medium.

Your attention is drawn to the terms and conditions of the Software License regarding the use of NAG software. Any request to use this software other than on the licensed computer must be referred to NAG, as should requests for information about the availability of other implementations.

2. Implementation Provided

2.1. Applicability

This implementation is a compiled, tested, ready-to-use version of the NAG Fortran Library that is considered suitable for operation on the computer systems detailed below:
hardware:         Intel-based Mac 64-bit systems
operating system: Mac OS X version 10.4.11 and compatible (including 10.5.1)
Fortran compiler: NAGWare Fortran 95 compiler Release 5.1 and compatible

2.2. Derivation

This implementation was produced at NAG Ltd., Oxford on the computing system detailed below:
hardware:         Apple iMac5.1 - 2GHz intel Core 2 Duo
operating system: Mac OS X version 10.4.11
                  Darwin Kernel Version 8.11.1
Fortran compiler: NAGWare Fortran 95 compiler Release 5.1
                  (347,355,..., 463)
Compiler switches: -O -w -PIC -dcfuns -ieee=full
This implementation has been tested at NAG Ltd., Oxford on the computing system detailed below:
hardware:         Apple iMac5.1 - 2GHz intel Core 2 Duo
operating system: Mac OS X version 10.5.1
                  Darwin Kernel Version 9.1.0
Fortran compiler: same as above
The entire NAG Fortran Library, Mark 21, was compiled with optimization level (-O).

This library has been tested using the Basic Linear Algebra Subprograms (BLAS) and linear algebra routines (LAPACK) provided by NAG (see the Chapter Introductions for F06, F07 and F08 in the NAG Mark 21 Library Manual, which we will refer to as the Library Manual).

The library has also been tested with the Apple Computer's vecLib version 3.3.1.

3. Distribution Medium

The software is ordinarily distributed in dmg (Disk Image) format on CD-ROM, it can also be downloaded from any of the NAG Web sites (see NAG Websites).

3.1. Contents

The following shows the directory/file organization of the implementation materials as they will be installed.
            |- doc -|- in.html  (Installer's Note, (this document))
            |       |- un.html  (Users' Note)
            |       |- libnag_nag.a     (static self-contained library
            |       |                    including NAG BLAS/LAPACK)
            |- lib -|- libnag_nag.dylib (dynamic self-contained library
            |       |                    including NAG BLAS/LAPACK)
            |       |- libnag_vl.a      (static library requiring
            |       |                    vecLib BLAS/LAPACK)
            |       |- libnag_vl.dylib  (dynamic library requiring
            |                            vecLib BLAS/LAPACK)
flmi621d9l -|
            |- nag_interface_blocks -|- *
            |            |- source --|- ??????e.f
            |- examples -|- data ----|- ??????e.d
            |            |- results -|- ??????e.r
            |- scripts -|- nag_example*
            |           |- bin -|- * (directories of binaries
            |           |             for supported platforms)
            |- license -|- README.TXT
                        |- doc -|- * (End User Guide)

libnag_vl.a and libnag_vl.dylib do not contain the NAG version of Basic Linear Algebra Subprograms (BLAS) nor the linear algebra functions (LAPACK). Both have been tested with the BLAS/LAPACK provided by the Apple Computer's vecLib version 3.3.1.

The following shows the directory/file organization of the Library Manual as they will be installed.

nagdoc_mk21 -|- examples -|- baseresults -|- ??????*.r
             |            |- source      -|- ??????*.f
             |            |- data        -|- ??????*.d
             |- html -|- mark21.html                (main HTML index)
             |        |
             |        |- [A00-X05] -|- *conts.html  (chapter contents)
             |        |
             |        |- frontmatter -|- *.html     (foreword & copyright)
             |        |
             |        |- genint -|- *.html  (general introductory material
             |        |                      and online help document)
             |        |
             |        |- indexes -|- gams -|- fl_gams.html  (GAMS index)
             |        |           |        |- *.html        (GAMS files)
             |        |           |
             |        |           |- kwic -|- fl_kwic.html  (KWIC index)
             |        |                    |- *.html        (KWIC files)
             |        |
             |        |- styles -|- libdoc.css      (main CSS stylesheet)
             |- pdf -|- frontmatter -|- mark21.pdf  (NAG copyright and main
                     |               |               pdf page)
                     |               |- foreword.pdf
                     |- [A00-X05] -|- *conts.pdf    (chapter contents)
                     |             |- *intro.pdf    (chapter introduction)
                     |             |- *f.pdf        (routine documents)
                     |- genint -|- *.pdf  (general introductory material
                     |                     and online help document)
                     |- indexes -|- *.pdf (bookmarked file containing links
                     |                     to fl_kwic.html and fl_gams.html)
                     |- INUNs -|- *.pdf   (implementation specific note)

3.2. File Sizes

The files require approximately the following disk space:
compiled libraries:
  libnag_nag.a     26.3 Mb
  libnag_nag.dylib 18.5 Mb
  libnag_vl.a      25.9 Mb
  libnag_vl.dylib  18.4 Mb
interface blocks:                        1.8 Mb
example program material:               14.5 Mb
scripts:                                16.0 Kb
implementation specific documentation:  52.0 Kb
Library Manual:                        226.1 Mb
licensing materials                      5.3 Mb

4. Installation

4.1. Installation of Library Software and Manual

4.1.1. Library Software Installation

To install the Library Software, double click on flmi621d9l.pkg and follow the instructions.

By default, the Library Software will be installed in /opt/NAG/. As the installer, you may wish to choose a different location. In this document we refer to the directory /opt/NAG/flmi621d9l or the directory specified by the installer as [INSTALL_DIR].

The directory [INSTALL_DIR] is referenced in the Users' Note (un.html).

The directory [INSTALL_DIR]/scripts contains one or more scripts to show how to use the libraries provided with this implementation. See Users' Note, Example Programs. Subsequent to the installation, if the installer moves the library to some other location then these scripts must be changed to reflect that fact.

To simplify access to the libraries you may wish to create symbolic links in a system location such as /usr/lib pointing at the installed libraries. They would then be in the default search path of the linker during the link phase, and be available for execution at run time.

The NAG Fortran Library Interface Blocks define the type and arguments of each user callable NAG Fortran Library routine. These are not essential to calling the NAG Fortran Library from Fortran 90/95 programs. Their purpose is to allow the Fortran 90/95 compiler to check that NAG Fortran Library routines are called correctly.

The interface block files (nag_interface_blocks/*) are supplied in both source form and pre-compiled module form.

The -Ipathname option should then be specified on each f90/f95 invocation (where pathname is [INSTALL_DIR]/nag_interface_blocks) to tell the compiler where to find the modules.

4.1.2. Library Manual Installation

To install the Library manual, double click on "NAG Fortran Library Manual, Mark 21.pkg".

By default, the Library Manual will be installed in /opt/NAG/ however it can be installed to some other location of the installer's choice. For example you may wish to install the Library Manual in the same location as that for other NAG products. You are encouraged to make it readily available to users.

4.1.3. License Management

The use of the NAG Fortran Library is controlled by the Kusari license management system. This release of the NAG Fortran Library uses version 2.2 of Kusari.

A short term (demonstration or trial) license key contains one or more lines like the following:

FLMI621D9 TRIAL 2008/04/20 "EMnxidA3oeoj0F1Yvi5ibxPjB7"
Specifically, it has a line containing the word TRIAL. Longer term license keys must be locked to a specific computer, i.e. they will enable the software on one computer only. These license keys include the word NODE instead of the word TRIAL above.

In order to enable the software, NAG will issue you with a license key. The license key is a simple text file containing details of the software that will be enabled.

License key request and installation is performed through the "License Installer". If you do not have a license key, a request form will be generated for you to complete and send to NAG via fax or e-mail.

Once you have obtained one of the above license keys you can enter it into the installer. By default, the installer will save the license key in /opt/NAG/nag.key (prepends the file if it exists). The Library will then validate the license at runtime.

If you need to update or change the license key after installation, we recommend that you run the installer again.

Further details about Kusari and how it may be configured to suit your local circumstances are included in the Kusari License Management documentation in the license/doc/ subdirectory of the installation directory [INSTALL_DIR] (see Section 3.1).

4.2. Release to Users

The Users' Note (doc/un.html) should be checked and amended as necessary (particularly Sections 3.1, 3.2 and 5). Advice on accessing the library (see Users' Note, Section 3.1) can be checked by running a few example programs following that advice; a suitable sample would be D01AUF, E04UCA and F07ADF. The installation can also be tested using the scripts nag_example* (see Users' Note, Section 3.2). The Users' Note (doc/un.html) should then be made available to users directly, or be absorbed into local access information.

The following material should also be made accessible to users:

documentation files:

The nagdoc_mk21 directory contains the Library Manual. This should be made available to users.

compiled libraries:

interface block files:
example program material:

Note that the example material has been adapted, if necessary, from that published in the Library Manual, so that programs are suitable for execution with this implementation with no further changes (but see Section 4.3.1 for comments about possible differences in results obtained). Making the example material directly available to users provides them with easily adaptable templates for their own problems.

4.3. Further Information

For best performance, we recommend that you should use the variant of the NAG Fortran Library which is based on the vecLib library i.e. libnag_vl.a or libnag_vl.dylib. However if you use a version of the vecLib library different from the version used in creating this implementation and you have problems when calling a NAG routine, we suggest that you use the self-contained libraries libnag_nag.a or libnag_nag.dylib.

4.3.1. Example Programs

The example results distributed were generated at Mark 21, using the software described in Section 2.2. These example results may not be exactly reproducible if the example programs are run in a slightly different environment (for example, a different Fortran compiler, a different compiler library, or a different set of BLAS or LAPACK routines). The results which are most sensitive to such differences are: eigenvectors (which may differ by a scalar multiple, often -1, but sometimes complex); numbers of iterations and function evaluations; and residuals and other "small" quantities of the same order as the machine precision.

The installer should ensure that the advice given to users in Section 3.1 of the Users' Note (un.html) is suitable for the installation. This can be done by running a few example programs following that advice. The installation can also be tested using the scripts nag_example*.

4.3.2. Maintenance Level

The maintenance level of the Library can be determined by compiling and executing the example that calls A00AAF, or you could call the script nag_example with the argument a00aaf. See Users' Note, Example Programs . This example prints out details of the implementation, including title and product code, compiler and precision used, mark and maintenance level.

5. Documentation

On-line documentation is bundled with this implementation. Please see Section 4.

6. Support from NAG

(a) Contact with NAG

Queries concerning this document or the implementation generally should be directed initially to your local Advisory Service. If you have difficulty in making contact locally, you can contact NAG directly at one of the addresses given in the Appendix. Users subscribing to the support service are encouraged to contact one of the NAG Response Centres (see below).

(b) NAG Response Centres

The NAG Response Centres are available for general enquiries from all users and also for technical queries from sites with an annually licensed product or support service.

The Response Centres are open during office hours, but contact is possible by fax, email and phone (answering machine) at all times.

When contacting a Response Centre, it helps us deal with your enquiry quickly if you can quote your NAG site reference and NAG product code (in this case FLMI621D9L).

(c) NAG Websites

The NAG websites provide information about implementation availability, descriptions of products, downloadable software, product documentation and technical reports. The NAG websites can be accessed at the following URLs:, or

(d) NAG Electronic Newsletter

If you would like to be kept up to date with news from NAG then please register to receive our free electronic newsletter, which will alert you to special offers, announcements about new products or product/service enhancements, customer stories and NAG's event diary. You can register via one of our websites, or by contacting us at

(e) Product Registration

To ensure that you receive information on updates and other relevant announcements, please register this product with us. For NAG Library products this may be accomplished by filling in the online registration form at

7. User Feedback

Many factors influence the way that NAG's products and services evolve, and your ideas are invaluable in helping us to ensure that we meet your needs. If you would like to contribute to this process, we would be delighted to receive your comments. Please contact any of the NAG Response Centres (shown below).

Appendix - Contact Addresses

Wilkinson House
Jordan Hill Road
OXFORD  OX2 8DR                         NAG Ltd Response Centre
United Kingdom                          email:

Tel: +44 (0)1865 511245                 Tel: +44 (0)1865 311744
Fax: +44 (0)1865 310139                 Fax: +44 (0)1865 310139

801 Warrenville Road
Suite 185
Lisle, IL  60532-4332                   NAG Inc Response Centre
USA                                     email:
Tel: +1 630 971 2337                    Tel: +1 630 971 2337
Fax: +1 630 971 2706                    Fax: +1 630 971 2706

Nihon NAG KK
Hatchobori Frontier Building 2F

Tel: +81 (0)3 5542 6311
Fax: +81 (0)3 5542 6312