NAG Fortran Library, Mark 19

FLDAV19DG

DEC Alpha AXP OpenVMS Double Precision G_FLOATING

Installer's Note



Contents


1. Introduction

This document is essential reading for whoever is responsible for the installation of the NAG Fortran Library Implementation specified in the title. The installer will be supplied with a printed copy of this document. Both this document and the Users' Note are supplied on the distribution medium in plain text form (IN.DOC and UN.DOC) and HTML form (IN.HTML and UN.HTML).

Whenever the NAG Fortran Library 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. In particular, users must not have free access to the text of the library routines. 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 the NAG Fortran Library that is considered suitable for operation on the computer systems detailed below:

hardware:         all systems in the DEC Alpha AXP range
operating system: Alpha AXP OpenVMS V6.1 or compatible
Fortran compiler: Digital Fortran 77 and 90

For information about implementations of the NAG Fortran Library 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:         DEC 3000 AXP model 500
operating system: Alpha AXP OpenVMS V6.1
Fortran compiler: Digital Fortran 77 V7.1-107-3313
                  and also tested with Digital Fortran 90 T7.1-323
compiler options: /CHECK=(NOBOUNDS,OVERFLOW,NOUNDERFLOW) /PAD_SOURCE

The entire Fortran Library, Mark 19, was compiled with default optimization (/OPTIMIZE), except for X04CBF, X04DBF and X04EBF which had to be compiled with no optimization (/NOOPTIMIZE).

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 Fortran Library Manual).

It has also been tested using the set of BLAS and LAPACK supplied in the Digital Extended Math Library (DXML) version 2.8-79 for G-float.

3. Distribution Medium

3.1. Recording Details

The implementation is distributed on a CD-ROM, labelled FLDAV19DG, unless otherwise indicated on the medium and accompanying despatch note.

For further details, refer to other documentation supplied or contact NAG (see Section 6).

3.2. Contents

The information has been written on the release medium as a series of backup save sets.

The save set INSTALL.BCK contains the following files:

INSTALL.COM   - an installation command procedure
 
MAKELIB.COM   - a command procedure used by INSTALL.COM to re-compile the 
                routines and create a new object module library file
 
NAG$LINK.OPT  - a linker options file for use with the shareable library

NAG$SHARE.OPT - a symbol vector options file ensuring compatibility of the
                shareable library across all customer sites 

NAGSHARE.COM  - a command procedure which converts the NAG object module
                library to shareable form 
The save set DOC.BCK contains the following files:
IN.DOC        - the Installer's Note for this implementation in plain text form
 
UN.DOC        - the Users' Note for this implementation in plain text form
 
IN.HTML       - the Installer's Note for this implementation in HTML form

UN.HTML       - the Users' Note for this implementation in HTML form

ESSINT.DOC    - the Essential Introduction to the NAG Fortran Library
 
SUMMARY.DOC   - a brief summary of the routines
 
NEWS.DOC      - an outline of the new and enhanced routines available at 
                Mark 19
 
REPLACED.DOC  - a list of routines available at earlier Marks of the Library 
                but since withdrawn, together with recommended replacements
 
CALLS.DOC     - a list of routines called directly or indirectly by each 
                routine in the Library, and by each example program
 
CALLED.DOC    - for each routine in the Library (including auxiliaries), a list 
                of those routines and example programs which call it directly 
                or indirectly
 
BLAS_LAPACK_TO_NAG.DOC - BLAS/F06, LAPACK/F07 and LAPACK/F08 listing

NAG_TO_BLAS_LAPACK.DOC - F06/BLAS, F07/LAPACK and F08/LAPACK listing
The save set LIBRARY.BCK contains the following file:
NAG$LIBRARY.OLB - the NAG Fortran Library
The save set LIBRARY_DXML.BCK contains the following file:
NAG$LIBRARY_DXML.OLB - the NAG Fortran Library for use with the Digital
                       Extended Math Library (DXML) for G-float 
The save set TEXT.BCK contains the following files:
*.FOR - the Fortran source text for all routines, including auxiliaries
The save set TEXT_F_AUX.BCK contains the following files:
*.FOR - the alternative Fortran source text necessary for using the Digital
        Extended Math Library (DXML) versions of BLAS and LAPACK 
The save set TEST.BCK contains the following files:
*.FOR - the Fortran source text of the example programs for F01ABF, F04ADF, 
        G05FFF and S17AKF
 
*.DAT - the data required to run the example programs for F01ABF, F04ADF and 
        S17AKF
 
*.RES - the results produced by the example programs for F01ABF, F04ADF, G05FFF 
        and S17AKF
The save set EXPT.BCK contains the following files:
*.FOR - the Fortran source text of the example programs
The save set EXPD.BCK contains the following files:
*.DAT - the data required to run the example programs
The save set EXPR.BCK contains the following files:
*.RES - the results produced by the example programs
The save set INTERFACE_BLOCKS.BCK contains the following files:
*.F90$MOD - modules which allow the Digital Fortran 90 compiler to check that
            NAG Fortran Library routines are called correctly 

*.F90     - the Fortran source text for the modules which allow the Digital
            Fortran 90 compiler to check that NAG Fortran Library routines are
            called correctly 

3.3. File Sizes

The files require approximately the following disk space:
compiled library:                   38100 blocks
(as supplied in compressed form)
compiled library for use with DXML: 38000 blocks
(as supplied in compressed form)
example program material:           14100 blocks
documentation files:                 5400 blocks
library source code:                47000 blocks
(not needed on disk permanently)
interface blocks:                    6100 blocks
(optional, needed only if using Digital Fortran 90)

4. Library Installation

4.1. Installation

If you do not have a CD-ROM drive on your OpenVMS system, the backup save sets can be FTPed (in binary form) from a drive on a PC or Unix system to your OpenVMS system. In this case, in the installation instructions below, ignore the MOUNT and DISMOUNT commands but reset the file attributes of the backup save sets as follows:
$ SET FILE/ATTRIBUTE=(LRL:8192,RFM:FIX) *.BCK

4.1.1. Library Installation, using INSTALL.COM

4.1.2. Object Module Library Installation, without using INSTALL.COM

4.1.3. Shareable Library Installation, without using INSTALL.COM

The example programs for the undocumented routines F06PBF, F06SBF, F06YCF and F06ZCF cannot be linked using the Shareable Library as a different version of the error handler is used in these tests. This does not affect the efficacy of these routines in normal usage.

4.2. Checking Accessibility

The installer should ensure that the advice given to users in Section 3.1 of the Users' Note (UN.HTML and/or UN.DOC) is suitable for the installation. This can be done by running a few example programs following that advice; a suitable sample would be A02AAF, G05FFF and X03AAF.

The installer should also ensure that the advice given to users in Section 3.6 of the Users' Note is suitable for the installation. If Digital Fortran 90 is not being used, the section may be deleted.

If any externally-provided library of Basic Linear Algebra Subprograms (BLAS) such as the Digital Extended Math Library (DXML) is to be used then the following example programs should also be run:

F06EAF - testing real Level 1 BLAS
F06GAF - testing complex Level 1 BLAS
F06ERF - testing real sparse Level 1 BLAS
F06GRF - testing complex sparse Level 1 BLAS
F06PAF - testing real Level 2 BLAS
F06SAF - testing complex Level 2 BLAS
F06YAF - testing real Level 3 BLAS
F06ZAF - testing complex Level 3 BLAS

Note that the last four example programs take longer to execute than the average example program.

4.3. Release to Users

The Users' Note (UN.HTML and/or UN.DOC) should be checked and amended as necessary (particularly Sections 3.1 and 3.6). 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:

documentation files:

ESSINT.DOC             from the save set DOC.BCK
SUMMARY.DOC            from the save set DOC.BCK
NEWS.DOC               from the save set DOC.BCK
REPLACED.DOC           from the save set DOC.BCK
CALLS.DOC              from the save set DOC.BCK
CALLED.DOC             from the save set DOC.BCK
BLAS_LAPACK_TO_NAG.DOC from the save set DOC.BCK
NAG_TO_BLAS_LAPACK.DOC from the save set DOC.BCK
compiled library:
NAG$LIBRARY.OLB from the save set LIBRARY.BCK or LIBRARY_DXML.BCK
(or the shareable library created from it)
example program material:
*.FOR from the save set EXPT.BCK
*.DAT from the save set EXPD.BCK
*.RES from the save set EXPR.BCK
interface block files (optional, needed only if using Digital Fortran 90):
*.F90$MOD from the save set INTERFACE_BLOCKS.BCK

Note that the example material has been adapted, if necessary, from that printed 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 X04AAF and X04ABF, 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 at Mark 19, 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, 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 either by inspecting the source of routine A00AAZ or by writing a simple program to call A00AAF, 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 currently provided with a printed copy of the NAG Fortran Library Manual (or Update) and Introductory Guide. 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.

A full on-line version of the NAG Fortran Library Manual is available in the form of Portable Document Format (PDF) files. Please contact NAG if you are interested in this.

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 please quote your NAG site reference and NAG product code (in this case FLDAV19DG).

(c) NAG Websites

The NAG websites are an information service providing items of interest to users and prospective users of NAG products and services. The information is reviewed and updated regularly and includes implementation availability, descriptions of products, downloadable software, product documentation and technical reports. The NAG websites can be accessed at

http://www.nag.co.uk/

or

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 you may want to register to receive our electronic newsletter, which will alert you to special offers, announcements about new products or product/service enhancements, case studies and NAG's event diary. To register simply visit one of our websites or contact 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. We have provided a short survey on our website at www.nag.co.uk/local/feedback to enable you to provide this feedback. Alternatively feel free to contact the appropriate NAG Response Centre who will be happy either to record your comments or to send you a printed copy of the survey.

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
 
Nihon NAG KK
Yaesu Nagaoka Building No. 6 
1-9-8 Minato
Chuo-ku
Tokyo
Japan
email: help@nag-j.co.jp

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

[NP3524/IN]