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).
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 R2000/R3000, R4000 and compatible operating system: IRIX 5.3 and compatible Fortran compiler: f77
For information about implementations of the NAG Fortran Library for use on other computer systems please contact NAG.
This implementation was produced at NAG Ltd., Oxford on the computing system detailed below:
hardware: Silicon Graphics Indy (R4600) operating system: IRIX 5.3 Fortran compiler: f77 v4.0.2 compiler options: -O2 library: complib.sgimath version 1.1
The entire NAG Fortran Library, Mark 19, was compiled with full optimization (-O2).
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 by Silicon Graphics in their complib.sgimath library (version 1.1). Defects were encountered in the complib.sgimath versions of DSTEBZ, IZAMAX, ZHETRF and ZHPTRF and the library for use with complib.sgimath uses the NAG versions of these subprograms.
For further details, refer to other documentation supplied or contact NAG (see Section 6).
|-- in.html
|-- un.html
|-- nag_fl_un.[3z]
|-- essint
|-- summary
|-- doc --|-- news
| |-- replaced
| |-- calls
| |-- called
| |-- blas_lapack_to_nag
| |-- nag_to_blas_lapack
flsg519da --|
|-- libnag_mips1.a (mips1-compiled library for R2000/R3000
| machines)
|
|-- libnag_mips1_use_complib.sgimath.a (mips1-compiled library for
| R2000/R3000 machines for
| use with complib.sgimath)
|
|-- libnag_mips2.a (mips2-compiled library for R4000 machines)
|
|-- libnag_mips2_use_complib.sgimath.a (mips2-compiled library for
| R4000 machines for use
| with complib.sgimath)
|
| |-- source ---|-- ??????e.f
|-- examples --|-- data -----|-- ??????e.d
| |-- results --|-- ??????e.r
|
| |-- [a-y] ----|-- ??????t.f
|-- source ----|
| |-- use_complib.sgimath --|-- ??????t.f
|
|-- scripts ---|-- *
All routines in libnag_mips2.a and libnag_mips2_use_complib.sgimath.a were
compiled with the -mips2 compiler switch. This switch should not be used on
systems with R2000/R3000 processors.
The directory use_complib.sgimath contains the variants of the sources to use the BLAS and LAPACK from complib.sgimath (except DSTEBZ, IZAMAX, ZHETRF and ZHPTRF).
compiled libraries, libnag_mips1.a: 16.0 Mb
libnag_mips1_use_complib.sgimath.a: 16.0 Mb
libnag_mips2.a: 15.0 Mb
libnag_mips2_use_complib.sgimath.a: 14.9 Mb
example program material: 5.0 Mb
documentation files: 2.5 Mb
scripts: 0.3 Mb
library source code: 20.1 Mb
(not needed on disk permanently)
To install all material (including source), use the Unix tar utility, e.g.
tar xvf /cdrom/fl19.tar(assuming the CD-ROM has been mounted as /cdrom).
Source should be needed only for reference by whoever is responsible for the installation of the library. This material should not be made available to users.
You need not make all four libraries available to users, and some may be deleted. If the libraries and the applications built from them are to be used only on mips2 systems, you may wish to delete the mips1 libraries. However the mips2 libraries offer only a marginal performance increase over the mips1 versions, so you may wish to install only the mips1 libraries to ensure that the software will run on all IRIX 5 systems.
It is advised that both the libnag_mips[12].a and libnag_mips[12]_use_complib.sgimath.a libraries are installed, so that users may choose between the NAG and complib.sgimath versions of the BLAS and LAPACK routines.
If you make only the mips1 or mips2 libraries available, they should be moved to a directory, such as /usr/lib, in the default search path of the linker, with names libnag.a and libnagblas.a.
If you intend to make all four libraries available, the following commands are recommended:
mv libnag_mips1_use_complib.sgimath.a /usr/lib/libnag.a mv libnag_mips1.a /usr/lib/libnagblas.a mv libnag_mips2_use_complib.sgimath.a /usr/lib/mips2/libnag.a mv libnag_mips2.a /usr/lib/mips2/libnagblas.a
The mips2 libraries will then be accessed when the -mips2 compiler option is used. Note that the libraries should not be placed in /usr/local/lib. You should ensure that any previous mark of the NAG library is deleted from /usr/local/lib.
The script nagexample refers to the local directory containing the example programs. The file 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, is provided as an nroff source file and also as a packed, pre-formatted file for systems without the Documentor's Work Bench software option. The relevant file belongs in section 3 of man. It should be moved a directory in the man search path, e.g.
either
cd doc mv nag_fl_un.3 /usr/local/man/man3or
cd doc mv nag_fl_un.z /usr/local/man/cat3
If the user advice refers to more than one compiled NAG library then each should be checked as above. If any externally-provided library of Basic Linear Algebra Subprograms (BLAS) 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. The Users' Note may contain extra information needed when running these tests.
The following material should also be made accessible to users:
documentation files:
doc/essint doc/summary doc/news doc/replaced doc/calls doc/called doc/blas_lapack_to_nag doc/nag_to_blas_lapackcompiled libraries:
libnag*.aexample 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 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.
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.
On-line documentation is bundled with this implementation. Please see the Readme file on the distribution medium for further information.
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 FLSG519DA).
The NAG Website is 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 Website can be accessed at
or
http://www.nag.com/ (in the USA)
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