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KurzbeschreibungWe've combined our 35 years of producing awardwinning Fortran language systems with Fujitsu's compiler expertise and highperformance code generator to deliver the mostproductive, bestsupported Fortran 95 language system for the PC. Whether you write new Fortran programs or downsize existing applications, you need speed, dependability, and great tech support. You need Lahey/Fujitsu Fortran 95!
Sprache: Englisch Betriebssystem: Linux CPUArchitektur: x86 Hersteller: Lahey, Fujitsu Lieferumfang: Box incl. Handbuch (engl) Lieferzeit: 10 Tage Unser Preis: € 695,00 (incl. 19% MWSt, netto € 584,03)
ab € 49, versandkostenfrei im Inland

"Our application is based on the finitedifference timedomain method.
Using the autoparallelization feature of LF95 PRO v6.2, we reduced the
execution time by approximately 50 %." 
LF95
Performance
LF95
6.2 features P4 optimizations with SSE2 instructions. We tested v6.2
optimizations on a 1.8GHz P4 with 512 MB of PC2100 RAM, running SuSE
8.1, using Polyhedron's (www.polyhedron.com) Fortran benchmarks.
Specifying the new switches tp4, sse2, zfm, o2, and x, the 90
benchmarks ran an average of 12.4 0,000000aster and the 77 benchmarks 7.9%
faster than they did when built with LF95 Linux v6.1. Try LF95 v6.2 on
your code today!
LF95
Optimizations
Basic Optimization
Free Technical Support
LF95 Linux Express
includes email technical support at no extra charge.
Automatic Parallelization
The
LF95 compiler automatically parallelizes DO loops and array operations
without you having to make modifications to the program. This makes it
easy to migrate source programs to other platforms (as long as the
program conforms with the Fortran Standard). The effect is to save
elapsed execution time by using two or more CPUs simultaneously. For
instance, if a DO loop can be executed in parallel by dividing it in
half, then, theoretically, the execution time of this DO loop may be
cut in half. In practice, improving performance requires some care and
some work on the part of the programmer. During compilation, the
autoparallel function will return information regarding which
processes were (and which were not) parallelized and why. While certain
loops can be analyzed sufficiently to be parallelized by the compiler
without input from the programmer, many loops have data dependencies
that prevent automatic parallelization because of the potential for
incorrect results. For that reason, LF95 PRO also includes optimization
control lines (OCLs) that provide information necessary for the
compiler to parallelize these otherwise unparallelizable loops. The
OCLs are Fortran comments in a particular format, for example:
!OCL PARALLEL
Note that programs with OCLs are standardconforming and can be compiled with other compilers that do not support OCLs.
Four compiler switches control automatic parallelization:
parallel, threads, threadstack, and ocl. Details of automatic
parallelization (loop slicing, interchange, distribution, fusion, and
reduction, as well as OCL syntax and specifiers) are documented in the
LF95 User's Guide and at www.lahey.com/doc.htm.
OpenMP v2.0 Compatibility
OpenMP
specifies a set of compiler directives, library routines, and
environment variables for sharedmemory parallelism in Fortran and
C/C++ programs. LF95 Linux PRO v6.2 supports the OpenMP v2.0
specification for Fortran. Like automatic parallelization, OpenMP
directives are used to parallelize a program that runs on a computer
with more than one processor. With OpenMP you have more control over
how code is parallelized, but also more coding to do.
The LF95 Linux PRO v6.2 CD includes the OpenMP v2.0 Fortran specification in PDF. You can also view the specification at www.lahey.com/doc.htm. You can learn more about OpenMP at www.openmp.org.
Winteracter Starter Kit
Use the Winteracter
Starter Kit  WiSK  for creating true X/Windows programs with Fortran.
WiSK is a subset of the X/Winteracter Library created by Interactive
Software Services, Ltd. (X/Winteracter is available from Lahey.) X/Winteracter
is a Fortran 95callable, 32bit, X/Windows, userinterface and graphics
development kit. Derived from X/Winteracter, WiSK
provides
a library of subroutines for window management, input handling, dialog
management, and high resolution graphics. Motif v2.2 is supported.
Linux distributions such as Red Hat and SuSE are now shipping v2.2 as
standard.
A
new Resource Editor combines and improves the old menu and dialog
editors and adds an image editor for icon, cursor,and bitmapbutton
creation. This substantially streamlines resource file maintenance. The
included Winteracter Application Wizard provides a quick and easy
method of generating a substantial starter application tailored to your
needs.
A
new Graphics Text(GT) group supersedes the Graphics Character Output
group. The new GT interface is easier to understand and typically
requires fewer subroutine calls. New features include the following:
software fonts defined within the library rather than in external data
files, thus eliminating the need to distribute and locate these files;
all graphics text can optionally be plotted on an opaque background;
underlining is available; text can be rotated and/or vertical;handling
of proportional spacing has been improved, using 'native' font spacing,
where available; vectorbased software
fonts can be drawn in a bold style; and character size is now expressed
in a more meaningful manner. Numerous other enhancements: graphics can
now be redirected to a dialog field instead of to a window. Windows and
dialogs can now be combined. Menus can now be added to child windows in
addition to the root window. Status bar help prompts can be
attached to menu items. Support for progress bars is added. Routines to
change the state of a field and move the cursor to a specific field are
added. The mouse cursor is selectable and mouse doubleclicks are
reported.
BLAS and LAPACK
BLAS
is a library for vector and matrix operations. The BLAS threadsafe
version is based on BLAS
provided on Netlib. Included in LF95 v6.2 is an optimized version for
the Pentium 4 with SSE2 instructions. BLAS includes 57 functions. The
total number of routines for all precision types amounts to
approximately 170.
BLAS threadsafe version provides the following routines:
Level 1 BLAS : Vector operations
Level 2 BLAS : Matrix and vector operations
Level 3 BLAS : Matrix and matrix operations
SparseBLAS : Sparse vector operations
The threadsafe implementation of BLAS has exactly the same subroutine names and calling
parameters as those of the Netlib baseline version.
Differences include:
Fujitsu Scientific Subroutine Library 2
The
Fujitsu Scientific
Subroutine Library 2 (SSL2) has been in use for years in Japan on
Fujitsu
mainframe and workstation hardware. Included in LF95 v6.2 is an
optimized version for the Pentium 4 with SSE2 instructions. SSL2 offers
over 250 optimized threadsafe routines
in the following areas:
Linear Algebra
Matrix Storage Mode
Conversion
Matrix Manipulation
Linear Equations
and Matrix Inversion (Direct Method)
Least Squares Solution
Eigenvalues and
Eigenvectors
Eigenvalues and
Eigenvectors of a Real Matrix
Eigenvalues and
Eigenvectors of a Complex Matrix
Eigenvalues and
Eigenvectors of a Real Symmetric Matrix
Eigenvalues and
Eigenvectors of a Hermitian Matrix
Eigenvalues and
Eigenvectors of a Real Symmetric Band Matrix
Eigenvalues and
Eigenvectors of a Real Symmetric Generalized Eigenproblem
Eigenvalues and
Eigenvectors of a Real Symmetric Band Generalized Eigenproblem
Nonlinear Equations
Polynomial Equations
Transcendental Equations
Nonlinear Simultaneous
Equations
Extrema
Minimization of
Function with a Variable
Unconstrained Minimization
of Multivariable Function
Unconstrained Minimization
of Sum of Squares of Functions (Nonlinear Least Squares Solution)
Linear Programming
Nonlinear Programming
(Constrained Minimization of Multivariable Function)
Interpolation
and Approximation
Interpolation
Approximation
Smoothing
Series
Transforms
Discrete Real Fourier
Transforms
Discrete Cosine
Transforms
Discrete Sine Transforms
Discrete Complex
Fourier Transforms
Laplace Transform
Numerical Differentiation and Quadrature
Differential Equations
Special Functions
Elliptic Integrals
Exponential Integral
Sine and Cosine
Integrals
Fresnel Integrals
Gamma Functions
Error Functions
Bessel Functions
Normal Distribution
Functions
Pseudo Random
Numbers
Pseudo Random Generation
Pseudo Random Testing
Free Telephone Support.
In addition to the
free email, fax, and postal technical support,
LF95 PRO includes free telephone support via Lahey's 7758312500 number.
Distribution  Kernel  libc 
Debian v3.0  2.2.20  2.2.5 
Mandrake v8.2  2.4.186  2.2.4 
Mandrake v9.0  2.4.19  2.2.5 
Mandrake v9.1  2.4.21  2.3.1 
Red Hat v7.2  2.4.7  2.2.4 
Red Hat v7.3  2.4.18  2.2.5 
Red Hat v8.0  2.4.18  2.2.93 
Red Hat v9.0  2.4.206  2.3.2 
RHEL v3.0 WS  2.4.219.EL  2.3.2 
Slackware v8.1  2.4.18  2.2.5 
SuSE v7.2  2.4.4  2.2.2 
SuSE v7.3  2.4.10  2.2.4 
SuSE v8.0  2.4.18  2.2.5 
SuSE v8.1  2.4.19  2.2.5 
SuSE v8.2  2.4.204  2.3.2 
SuSE v9.0  2.4.2199  2.3.2 
Trial version available. Click here for download.