NAG fl90, Release 4

FNL6A04D9L - License Managed

AMD64 Linux, NAGWare f95

Installer's Note


1. Introduction

This document is essential reading for whoever is responsible for the installation of the NAG fl90 implementation specified in the title. The installer will be supplied with a printed copy of this document. Both this (in.html) and the Users' Note (un.html) are supplied in the doc directory on the distribution medium.

Whenever the NAG fl90 has been supplied in compiled form, that form is considered to be the standard library file. The use of all supplied software must be in accordance with the terms and conditions of the Software Licence signed by NAG and each site. Any request to use NAG software on a computer other than the one licensed must be referred to NAG (see Section 6).

2. Implementation Provided

2.1. Applicability

This implementation is a compiled, tested, ready-to-use version of NAG fl90 that is considered suitable for operation on the computer systems detailed below:

hardware:         AMD64 systems
operating system: Linux 2.4.19 (RedHat 8.1) or compatible
Fortran compiler: NAGWare f95 v4.2(537) or compatible
C compiler:       gcc v3.3 or compatible

The NAG libraries provided in this implementation use the Basic Linear Algebra Subprograms (BLAS) and linear algebra routines (LAPACK) in the AMD Core Math Library (ACML). Specifically, the version of ACML for the GNU g77 compiler is required. To use this version of ACML, the g77 runtime library (libg2c.a/ must also be installed. Version 1.5 of ACML for GNU g77 is included with this NAG Library implementation. This is the version used in testing this implementation. Later releases of ACML may be available at

For information about implementations of NAG fl90 for use on other computer systems please contact NAG.

2.2. Derivation

This implementation was produced at NAG Ltd., Oxford on the computing system detailed below:

hardware:         AMD Opteron MP
operating system: SuSE SLES-8 (x86-64) (RedHat 8.1)
Fortran compiler: NAGWare f95 v4.2(537)
compiler options: -PIC -w -f77 -ieee=full -thread_safe
C compiler:       gcc version 3.3-hammer 20030205 (prerelease)

The "-f77" compiler flag is used to compile the library source files to allow compatibility with other codes created using the native compilers.

The entire NAG fl90 library, Release 4, was compiled with optimization level (-O4), except for the following underlying procedures, which had to be compiled with less optimization:

e02adf_9d (-O2)   e02agf_9d (-O2)

3. Distribution Medium

The software is ordinarily distributed in tar format on CD-ROM.

3.1. Contents

The following shows the directory/file organization of the library materials as they will be installed.
                      |-- in.html
            |-- doc --|-- un.html
            |         |-- nag_fn_un.3
            |-- lib |-- libnagfl90.a
            |       |--
            |-- acml |-- libacml.a
            |        |--
            |-- nag_mod_dir --|-- *.mod
            |              |-- source ---|-- *.f90
            |-- examples --|-- data -----|-- *.dat
            |              |-- results --|-- *.r
            |-- scripts ---|-- nagexample*
            |-- bin --|-- *
            |              |-- bin ------|-- * (directories of FLEXlm binaries
            |              |                    for supported platforms)
            |-- license ---|-- README.TXT
                           |-- htmlman --|-- flexuser --|-- * (End User Guide)

The following shows the directory/file organization of the PDF documentation materials as they will be installed.

         |-- images --|-- *.gif
         |                   |-- release4.html  (main index)
         |                   |
         |                   |-- genint --|-- *.html  (introductory material)
NAGdoc --|        |-- html --|
         |        |          |-- library_contents --|-- *.html
         |        |          |
         |        |          |-- [c01-c29]_fn04.html  (chapter indexes)
         |-- fn --|
                  |         |-- genint --|-- *.pdf  (introductory material)
                  |         |
                  |         |-- library_contents --|-- *.pdf
                  |-- pdf --|
                            |-- indexes --|-- *.pdf  (KWIC and GAMS)
                            |-- [c01-c29] --|-- *.pdf  (chapter, module and
                                                        procedure files)

3.2. File Sizes

The files require approximately the following disk space:
compiled libraries:
  libnagfl90.a:              13.3 Mb              8.6 Mb
module information files:     2.2 Mb
example program material:     4.3 Mb
scripts:                        7 Kb
library documentation files:   34 Kb
PDF documentation files:     20.2 Mb
acml:                        20.1 Mb
Licensing materials:         50.1 Mb
bin:                          457 Kb

4. Installation

4.1. Library Installation

To install all library material use the Unix tar utility, e.g.

tar xvf /cdrom/fn04.tar
(assuming the CD-ROM has been mounted as /cdrom).

If the version 1.5 or later of ACML is available elsewhere on your system, then you may delete acml/*.

This implementation contains 2 object libraries. You could install one or both of them as required for you system.

The installed libraries should be moved to a directory, such as /usr/lib64, in the default search path of the linker, if possible, so that linkage is convenient. Alternatively, symbolic links could be made to them, e.g.

ln -s /fnl6a04d9/lib/libnagfl90.a   /usr/lib64/libnagfl90.a
ln -s /fnl6a04d9/lib/  /usr/lib64/

The module information files (nag_mod_dir/*) are supplied in pre-compiled module form. They should be moved to a suitable location so that access is convenient, e.g.

mkdir /usr/local/lib64/fl90_modules
mv nag_mod_dir/* /usr/local/lib64/fl90_modules
or, a symbolic link can be made, e.g.
ln -s /fnl6a04d9/nag_mod_dir  /usr/local/lib64/fl90_modules

The -I"pathname" option should then be specified on each compiler invocation (where "pathname" is /usr/local/lib64/fl90_modules) to tell the compiler where to find the modules.

The script nagexample uses the static library libnagfl90.a and the ACML static library. It refers to the local directories containing the NAG example programs, the ACML library and libg2c. If libnagfl90.a is installed, the script file should be copied to (for example) /usr/local/bin, modified to reflect the local installation for the NAG library, the ACML library and the libg2c.a.

The script nagexample_dynamic uses the dynamic library and the ACML dynamic library. It refers to the local directories containing the NAG example programs, the ACML library and libg2c. If is installed, the script file should be copied to (for example) /usr/local/bin, modified to reflect the local installation for the NAG library, the ACML library and the

The man page, which directs users to the HTML form of the Users' Note, should be moved to a directory in the man search path, e.g.

cd doc
mv nag_fn_un.3 /usr/man/man3

4.1.1. License Management

The use of the NAG Fortran Library is controlled by the FLEXlm network license management system (FLEXlm is a registered trademark of Macrovision Corporation). This release of the NAG Fortran Library uses version 9.2 of FLEXlm.

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

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

FEATURE NAG_FN NAG 4.000 30-mar-2004 0 CBDA2041DC1BC45D2B68 "ANY" DEMO
Specifically, it does not have any lines starting with the word SERVER and is referred to here as an uncounted license key. Longer term uncounted 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 FLEXlm hostid of the computer instead of the word DEMO above.

To apply for a longer term license key, contact one of the NAG Response Centres quoting the product to be licensed and the FLEXlm hostid for the computer. To obtain the FLEXlm hostid, select the appropriate lmutil program from the platform specific directory under the license/bin/ subdirectory, and run it with argument lmhostid:

./license/bin/i86_r6/lmutil lmhostid

On systems without an ethernet card, use the arguments lmhostid -long.

Once you have obtained the license key, store the text of it in a file, say /usr/local/lib/nag/license.dat.

The location of this file must be made known to the NAG application by setting the environment variable LM_LICENSE_FILE to the full pathname of the file before the application is invoked. The application must also be able to refer to the location of the installed NAG library materials, using the environment variable NAGLIBDIR.

For example, in the C-shell, type:

setenv LM_LICENSE_FILE /usr/local/lib/nag/license.dat
setenv NAGLIBDIR /opt/NAG/fnl6a04d9l
or in the Bourne shell, type:
If an invalid licence has been used when attempting to run an application linked with the NAG library, it may be necessary to run the command "$NAGLIBDIR/bin/holdNAGlics -stop" before a valid licence can be recognised.

No other actions are required to install an uncounted license.

Further details about FLEXlm and how it may be configured to suit your local circumstances are included in the FLEXlm End Users Guide supplied in the license/htmlman/flexuser/ subdirectory.

4.2. PDF Documentation Installation

To install all PDF documentation material, use the Unix tar utility, e.g.
tar xvf /cdrom/pdf.tar
(assuming the CD-ROM has been mounted as /cdrom).

You may wish to move the PDF documentation files to the same location as that for other NAG products. You are encouraged to make them readily available to users, but in such a way that they are not generally accessible from outside your site. Further information is contained in the readme file on the distribution medium.

4.3. Checking Accessibility

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 nagexample* scripts.

4.4. Release to Users

The Users' Note (un.html) should be checked and amended as necessary (particularly Section 3.1). It can then be made available to users directly, or be absorbed into local access information.

The following material should also be made accessible to users:

pdf documentation files:

The NAGdoc directory contains the online documentation. This should be made available to users, in addition to the following:

Libraries - one or both of the compiled libraries:
modules information files:
example program material:

Note that the example material has been adapted, if necessary, from that printed in the NAG fl90 Manual, so that programs are suitable for execution with this implementation with no further changes. Making the example material directly available to users provides them with easily adaptable templates for their own problems.

4.5. Maintenance Level

The maintenance level of the library can be determined by writing a simple program to call procedure nag_lib_ident, which prints out details of the implementation, including title and product code, compiler and precision used, release and maintenance level.

5. Documentation

Each supported NAG fl90 site is currently provided with a printed copy of the NAG fl90 Manual (or Update). Additional copies are available for purchase; please refer to the NAG documentation order form (available on the NAG websites, see Section 6 (c)) for details of current prices.

Online documentation is provided, in PDF form, with this implementation. Please see the Readme file on the distribution medium for further information.

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 FNL6A04D9L).

(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, (in North America) or (in Japan)

(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

7. User Feedback

Many factors influence the way 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 your local NAG Response Centre (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
1431 Opus Place, Suite 220
Downers Grove
IL 60515-1362                           NAG Inc Response Center
USA                                     email:
Tel: +1 630 971 2337                    Tel: +1 630 971 2345
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


All other trademarks are acknowledged.