Great Tech Support. Lahey/Fujitsu Fortran 95. The standard for Fortran
programming from the leader in Fortran language systems.
We've combined our 35
years of producing award-winning Fortran language systems with Fujitsu's
compiler expertise and high-performance code generator to deliver the most-productive,
best-supported 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!
Pentium 4 and Xeon optimizations with SSE2 instructions
OpenMP v2.0 Support
Prefetch optimizations for Pentium III and Athlon
Unsurpassed global compile-time and runtime diagnostics
Allocate arrays up to 2 GB
External file size 2**64 bytes
IMSL compatibility (IMSL available at extra charge)
New Wisk, Winteracter Starter Kit
Thread-safe BLAS and LAPACK v3.0 (includes SSE2 version)
Thread-safe SSL2 math library (includes SSE2 version)
Automake, automatic make utility
ALLOCATABLE attributes on array components
Character variable length limit: 2,147,483,647
MPI compatible with MPICH source included
Compatible with TotalView parallel debugger
LF95 v6.2 is available
in two configurations, Express and PRO:
Express includes the powerful Lahey/Fujitsu Fortran 95
optimizing compiler, command line debugger, link-compatibility with g77 and egcs, online documentation, and free e-mail support. Suggested retail price, $249.
PRO adds auto-parallelization, OpenMP compatibility, the Winteracter Starter Kit, WiSK, for creating Windows GUIs
and displaying graphics, thread-safe BLAS and LAPACK, Polyhedron's Automake utility, the Fujitsu SSL2 math
library (thread-safe for parallel applications), and free phone support. Suggested
retail price, $695.
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% faster 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!
Dead code elimination
Loop invariant code
Transform array element
to simple variable
Local Instruction scheduling
P4 with SSE2 instructions
Prefetch for Pentium III and Athlon processors
PRO instruction selection
Using fast input/output
Fujitsu C, g77, and egcs object files
LF95 supports static
linking with Fujitsu C, g77, or egcs. Combine your Fortran and C/C++ code
into one executable. For the routines you don't want to develop yourself,
you can also link with C/C++ routines from commercially available libraries.
LF95 extends its
language support in other directions adding many legacy Fortran features,
including VAX structures and the various UNIX service routines. These features
further facilitate your move to cost/performance efficiency on the PC platform:
Unlimited number of
continuation lines in free or fixed source form
DO UNTIL statement
STRUCTURE and END STRUCTURE
UNION and END UNION
MAP and END MAP statements
Alternative forms of
binary, octal, and hexadecimal constants
Binary, octal, or hexadecimal
constants in a DATA, declaration statement
Period structure component
IMPLICIT UNDEFINED statement
on internal file
FORM = 'BINARY'
STATUS = 'SHR'
Gw, $, \, and R edit
LOC intrinsic function
The following service
subroutines: ABORT, BEEP, BIC, BIS, CLOCK, CLOCKM, DATE, EXIT, ERRSAV,
ERRSTR, ERRSET, ERRTRA, FDATE, FREE,GETARG, GETDAT, GETLOG, GETPARM, GETTIM,
GMTIME, IBTOD, IDATE, IETOM, ITIME, IVALUE, LTIME, MTOIE, PERROR, PRNSET,
QSORT, SETRCD, SETBIT, SIGNAL, SLEEP
The following service
functions: ACCESS, ALARM, BIT, CHDIR, CHMOD, CTIME, DRAND, DTIME, ETIME,
FGETC, FPUTC, FSEEK, FSTAT, FTELL, GETC, GETCWD, GETFD, GETPID, HOSTNM,
IARGC, IERRNO, INMAX, IOINIT, IRAND, JDATE, KILL, LNBLNK, LONG, LSTAT,
MALLOC, NARGS, PUTC, RAN, RAND, RENAME, RINDEX, RTC, SECOND, SECNDS, SETDAT,
SETTIM, SHORT, STAT, TIME, TIMEF, UNLINK
LF95 is a complete
implementation of the ANSI/ISO Fortran 95 standard. Fortran 95 offers some
small but important improvements over Fortran 90, including the ability
to create your own elemental procedures, default initialization for structure
components, the NULL intrinsic for initializing pointers, the FORALL construct,
and a standard CPU_TIME intrinsic procedure.
Free Technical Support
LF95 Linux Express
includes e-mail technical support at no extra charge.
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 auto-parallel 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:
Note that programs with OCLs are standard-conforming 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.
OpenMP v2.0 Compatibility
OpenMP specifies a set of compiler directives, library routines, and environment variables for shared-memory 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.
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 95-callable, 32-bit, X/Windows, user-interface 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 bitmap-button 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; vector-based 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 double-clicks are reported.
BLAS and LAPACK
BLAS is a library for vector and matrix operations. The BLAS thread-safe 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 thread-safe version provides the following routines:
Level 1 BLAS : Vector operations
Level 2 BLAS : Matrix and vector operations
Level 3 BLAS : Matrix and matrix operations
Sparse-BLAS : Sparse vector operations
The thread-safe implementation of BLAS has exactly the same subroutine names and calling
parameters as those of the Netlib baseline version.
The purpose of using BLAS thread-safe version is to have a subroutine concurrently perform
operations on different sets of data that are independent from each other, and thus reduce the
time necessary to finish all the operations.
the thread-safe version can be used in the environment of SMP (Symmetric Multiple
subroutines of the thread-safe version can be called from an OpenMP Fortran program
LAPACK is a library of linear algebra routines. The LAPACK thread-safe version is based on LAPACK 3.0 provided on Netlib. Included in LF95 v6.2 is an optimized version for the Pentium 4 with SSE2 instructions. LAPACK includes approximately 300 functions. The total number of routines for all precision types amounts to approximately 1100.
LAPACK provides the following routines:
The LAPACK thread-safe version, like the BLAS version, can be called from an OpenMP program in the environment of SMP.
- Linear equations
- Linear least squares problems
- Eigenvalue problems
- Singular value decomposition
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 thread-safe routines
in the following areas:
Matrix Storage Mode
and Matrix Inversion (Direct Method)
Least Squares Solution
Eigenvectors of a Real Matrix
Eigenvectors of a Complex Matrix
Eigenvectors of a Real Symmetric Matrix
Eigenvectors of a Hermitian Matrix
Eigenvectors of a Real Symmetric Band Matrix
Eigenvectors of a Real Symmetric Generalized Eigenproblem
Eigenvectors of a Real Symmetric Band Generalized Eigenproblem
Function with a Variable
of Multivariable Function
of Sum of Squares of Functions (Nonlinear Least Squares Solution)
(Constrained Minimization of Multivariable Function)
Discrete Real Fourier
Discrete Sine Transforms
Sine and Cosine
Pseudo Random Generation
Pseudo Random Testing
Free Telephone Support.
In addition to the
free e-mail, fax, and postal technical support,
LF95 PRO includes free telephone support via Lahey's 775-831-2500 number.
glibc 2.2.4 and higher (see below for tested distributions).
X-Windows to view online pdf manuals.
35MB of available hard disk space for LF95 Express, 70MB for LF95 PRO.
80486DX or Pentium-compatible processor
We support LF95 v6.2 on the following distributions:
|Red Hat v7.2
|Red Hat v7.3
|Red Hat v8.0