NAG Fortran Library, Mark 20

FLSG620SAL - License Managed

Silicon Graphics (IRIX 6) Single Precision

Installer's Note



Contents


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 supplied in printed form to accompany the software, and is also available together with the Users' Note (un.html) in the doc directory of the installed product.

Your attention is drawn to the terms and conditions of the Software Licence 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:         Silicon Graphics MIPS III or MIPS IV
operating system: IRIX 6.5 or compatible
Fortran compiler: SGI MIPSpro Compilers f77 or f90 version 7 (or compatible)
Note, however, that the two routines X04ACE and X04ADE are not compatible with Fortran 90.

2.2. Derivation

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

hardware:         Silicon Graphics Origin 3400
operating system: IRIX 6.5
Fortran compiler: GI MIPSpro Compilers version 7.3.1.2m
compiler options: -n32 -mips3 (for MIPS III ISA / 32 bit ABI)
                  -n32 -mips4 (for MIPS  IV ISA / 32 bit ABI)
                  -64  -mips3 (for MIPS III ISA / 64 bit ABI)
                  -64  -mips4 (for MIPS  IV ISA / 64 bit ABI)

The entire NAG Fortran Library, Mark 20, was compiled with full optimization (-O3), except for the following routines, which had to be compiled with -O2 optimization:

   bazg12   bdyd05   cbsd06   d06dae   lgvg05

Four pairs of archive libraries are provided, one pair for each combination of ABI (compiler option -n32 or -64) and ISA (compiler option -mips3 or -mips4). In each pair...

libnagbl.a
contains NAG versions of all the Basic Linear Algebra Subprograms (BLAS) and linear algebra routines (LAPACK) with both their BLAS/LAPACK names and NAG F06/F07/F08 names;

libnag.a
allows the use of third party, processor tuned versions of the BLAS and LAPACK routines; except as noted below, it has NAG versions of BLAS/LAPACK with their NAG F06/F07/F08 names only - other BLAS/LAPACK names must be resolved from some other library, for example the SGI/Cray Scientific Libraries (SCSL).
The libnag.a libraries were tested with SCSL version 1.3, which does not include the following BLAS/LAPACK routines, the NAG versions of which are included in libnag.a:
   caxpyi   cdotci   cdotui   cgthr    cgthrz            csctr 
   saxpyi   sdoti             sgthr    sgthrz   sroti    ssctr 

(See the Chapter Introductions for F06, F07 and F08 in the NAG Fortran Library Manual for more information about BLAS and LAPACK.)

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
                       |-- un.html
             |-- doc --|-- nag_fl_un.3
             |         |-- blas_lapack_to_nag
             |         |-- nag_to_blas_lapack
             |
             |                       |-- libnag.a
             |           |-- mips3 --|-- libnagbl.a
             |-- lib32 --|
             |           |-- mips4 --|-- libnag.a
             |                       |-- libnagbl.a
             |
             |                       |-- libnag.a
             |           |-- mips3 --|-- libnagbl.a
             |-- lib64 --|
             |           |-- mips4 --|-- libnag.a
flsg620sal --|                       |-- libnagbl.a
             |
             |-- interface_blocks_32 --|-- *.mod
             |
             |-- interface_blocks_64 --|-- *.mod
             |
             |              |-- source ---|-- ??????e.f
             |-- examples --|-- data -----|-- ??????e.d
             |              |-- results --|-- ??????e.r
             |
             |-- scripts ---|-- *
             |
             |              |-- 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.

NAGdoc -|- fl -|- html -|- mark20.html (main index)
               |        |
               |        |- frontmatter -|- *.html (sundry information)
               |        |
               |        |- genint -|- *.html (introductory material)
               |        |
               |        |- images -|- *.gif (nag images)
               |        |          |
               |        |          |- topbar -|- *.gif (Fortran Library images)
               |        |
               |        |- indexes -|- gams -|- gams.html (main GAMS index)
               |        |           |        |
               |        |           |        |- *.html (GAMS files)
               |        |           |
               |        |           |- kwic -|- kwic.html (main KWIC index)
               |        |                    |
               |        |                    |- *.html (KWIC files)
               |        |
               |        |- toc -|- [A02-X05].html (chapter indexes)
               |
               |- pdf  -|- genint -|- *.pdf (introductory material)
                        |
                        |- [A02-X05] -|- *.pdf (chapter and routine files)

3.2. File Sizes

The files require approximately the following disk space:
compiled libraries: each archive is between 31 and 36 Mb (total 274 Mb)
interface blocks (32-bit):    2.9 Mb
interface blocks (64-bit):    3.1 Mb
example program material:     5.6 Mb
scripts:                       22 Kb
library documentation files:   57 Kb
PDF documentation files:      105 Mb
licensing materials            27 Mb

4. Installation

4.1. Library Installation

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

cd /opt/NAG
tar xvf /cdrom/fl20.tar
(assuming the CD-ROM has been mounted as /cdrom).

If SCSL is not available on your system, then you may delete lib??/mips?/libnag.a.

It is advisable that the libraries are kept in the installed directory, /opt/NAG/flsg620sal/, and appropriate symbolic links `libnag.a', and `libnagbl.a' made to them from appropriate system library directories where the linker (ld) will find them, e.g., for the 32-bit MIPS IV libraries.

ln -s /opt/NAG/flsg620sal/lib32/mips4/libnag.a  /usr/lib32/mips4/libnag.a
ln -s /opt/NAG/flsg620sal/lib32/mips4/libnagbl.a  /usr/lib32/mips4/libnagbl.a

For the 32-bit MIPS III libraries, an appropriate directory is /usr/lib32/mips3; for the 64-bit MIPS III and MIPS IV libraries appropriate directories are /usr/lib64/mips3 and /usr/lib64/mips4, respectively.

The script nagexample refers to the local directory containing the example programs. The script should be copied to (for example) /usr/local/bin, modified to reflect the local installation, and its protection set to world execute.

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

cd doc
mv nag_fl_un.3 /usr/local/man/man3
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 (interface_blocks_32/*.mod and interface_blocks_64/*.mod) 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/lib/fl77_modules_32
mv interface_blocks_32/* /usr/local/lib/fl77_modules_32

mkdir /usr/local/lib/fl77_modules_64
mv interface_blocks_64/* /usr/local/lib/fl77_modules_64

The -I"pathname" option should then be specified on each f90/f95 invocation (where "pathname" is /usr/local/lib/fl77_modules_32 or /usr/local/lib/fl77_modules_64) to tell the compiler where to find the modules.

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 8.3b 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_FL NAG 20.000 10-apr-2002 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/sgi32_u6/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.

For example, in the C-shell, type:

setenv LM_LICENSE_FILE /usr/local/lib/nag/license.dat
or in the Bourne shell, type:
LM_LICENSE_FILE=/usr/local/lib/nag/license.dat
export LM_LICENSE_FILE
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. Release to Users

The Users' Note (doc/un.html) should be checked and amended as necessary (particularly Sections 3.1 and 5.). Advice on accessing the library in Section 3.1 can be checked by running a few example programs following that advice; a suitable sample would be A02AAE, D01AUE, G05LFE and X03AAE. The installation can also be tested using the script nagexample. The Users' Note 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 directory contains the online documentation. This should be made available to users, in addition to the following:

doc/blas_lapack_to_nag
doc/nag_to_blas_lapack
compiled libraries - one or more of:
lib32/mips3/libnag.a
lib32/mips3/libnagbl.a
lib32/mips4/libnag.a
lib32/mips4/libnagbl.a
lib64/mips3/libnag.a
lib64/mips3/libnagbl.a
lib64/mips4/libnag.a
lib64/mips4/libnagbl.a
interface block files - one or both of:
interface_blocks_32/*.mod
interface_blocks_64/*.mod
(corresponding to the choice of libraries)

example program material:

examples/source/??????e.f
examples/data/??????e.d
examples/results/??????e.r
scripts/nagexample

Note that the example material has been adapted, if necessary, from that published in the NAG Fortran Library Manual, so that programs are suitable for execution with this implementation with no further changes (but see Section 4.4.2 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.

4.4. Further Information

4.4.1. Output Unit Dependencies (X04)

Certain NAG routines use explicit WRITE statements to produce output directly. The choice of output unit used can be controlled by using X04AAE and X04ABE, described in the NAG Fortran Library Manual. The defaults for this implementation are given in the Users' Note.

4.4.2. Example Programs

The example results distributed were generated using the 32-bit MIPS IV libnag.a with 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, different arithmetic hardware, 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 "example programs" for the routines in the F06 chapter are not typical example programs and they are not in the Library Manual. They are test programs, which are supplied to sites for use in an installation test of the Library. Some of them take much longer to run than other example programs. Routines which are equivalent to BLAS, are tested twice: once when called by their NAG F06 names, and once when called by their BLAS names.

4.4.3. Maintenance Level

The maintenance level of the library can be determined by writing a simple program to call A00AAE, which prints out details of the implementation, including title and product code, compiler and precision used, mark and maintenance level.

5. Documentation

Each supported NAG Fortran Library site is ordinarily provided with a printed copy of the NAG Fortran Library Introductory Guide. Additional documentation is available for purchase; please refer to the NAG websites or contact your local NAG Response Centre for current prices (see Section 6).

Online documentation is bundled with this implementation. Please see Section 4.2.

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 FLSG620SAL).

(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

http://www.nag.co.uk/, http://www.nag.com/ (in North America) or http://www.nag-j.co.jp/ (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 nagnews@nag.co.uk.

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

NAG Ltd
Wilkinson House
Jordan Hill Road
OXFORD  OX2 8DR                         NAG Ltd Response Centre
United Kingdom                          email: support@nag.co.uk

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

NAG Inc
1431 Opus Place, Suite 220
Downers Grove
IL 60515-1362                           NAG Inc Response Center
USA                                     email: infodesk@nag.com

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
4-9-9
Hatchobori
Chuo-ku
Tokyo
104-0032
Japan
email: help@nag-j.co.jp

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