LF64 v8.1 Delivers!
Important features include ...

Intel EM64T and AMD AMD64 64bit optimizations

Unsurpassed global compiletime and runtime diagnostics

Automatic Parallelization

OpenMP Support

Wisk, Winteracter Starter Kit  Graphics package

Small and medium memory models

BLAS and LAPACK v4.0 routines  threadsafe

Fujitsu's SSL2 math library  threadsafe

Fujitsu's FDB debugger

Automake, automatic make utility
 COMPLEX constants (Fortran 2003) supported
LF64 v8.1 is available
in two configurations, Express and PRO:
LF64
Express includes the powerful Lahey/Fujitsu Fortran 95
optimizing compiler, command line debugger, online documentation, and free email support. Suggested retail price, $249.
LF64
PRO adds autoparallelization, OpenMP compatibility, the Winteracter Starter Kit, WiSK, for creating Windows GUIs
and displaying graphics, threadsafe BLAS and LAPACK, Polyhedron's Automake utility, and the Fujitsu SSL2 math
library (threadsafe for parallel applications). Suggested retail price, $695.
LF64
Performance
Polyhedron Software (www.polyhedron.com) ran their suite of Fortran benchmarks on a Pentium D820 dual core 2.8 GHz processor, with 2 x 1MB L2 cache and 800 MHz FSB, and running SUSE 9.3 Linux. Specifying the switch fast, the benchmarks ran an average of 21.8% faster than they did when built with LF95 Linux v6.2. Try LF64 v8.1 on your code today!
LF64
Optimizations
Basic Optimization

Constant folding

Common subexpression
elimination

Copy propagation

Strength Reduction

Algebraic simplifications

Dead code elimination

Peephole optimization

Loop invariant code
motion

Transform array element
to simple variable

Local Instruction scheduling

Address calculation
optimization
Program Reconstruction
Optimizations

Loop unrolling

Loop interchange
Procedure Optimization

Inlining mathematical
functions

Stack optimization
Others

SSE2 and SSE3 instructions

Prefetch instructions

Using fast input/output
libraries
Link
GNU C and assembly object files
LF64 supports static
linking with GNU C or assembly. 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.
Legacy
Fortran Support
LF64 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

FIND statement

STRUCTURE and END STRUCTURE
statements

UNION and END UNION
statements

MAP and END MAP statements

RECORD statement

Nonstandard POINTER
statement

AUTOMATIC statement

STATIC statement

VALUE statement

BYTE statement

Hollerith constants

Alternative forms of
binary, octal, and hexadecimal constants

Binary, octal, or hexadecimal
constants in a DATA, declaration statement

Period structure component
separator

IMPLICIT UNDEFINED statement

Namelist input/output
on internal file

FORM = 'BINARY'

TOTALREC specifier

STATUS = 'SHR'

Gw, $, \, and R edit
descriptors

LOC intrinsic function

The following service
subroutines: ABORT, BIC, BIS, CLOCK, CLOCKM, CLOCKV, DATE, ERROR, ERRSAV, ERRSET,
ERRSTR, ERRTRA, EXIT, FDATE, FLUSH, FREE, GETARG, GETCL, GETDAT, GETENV, GETLOG, GETPARM, GETTIM,
GETTOD, GMTIME, IBTOD, IDATE, IETOM, IOSTAT_MSG, ITIME, IVALUE, LTIME, MTOIE, PERROR, PRECFILL, PRNSET,
PROMPT, QSORT, REDLEN, SETBIT, SETRCD, SLEEP, SLITE, SLITET, TIMER

The following service
functions: ACCESS, ALARM, BIT, CHDIR, CHMOD, CTIME, DRAND, DTIME, ETIME,
FGETC, FORK, FPUTC, FSEEK, FSEEKO64, FSTAT, FSTAT64, FTELL, FTELLO64, GETC, GETCWD, GETFD, GETGID, GETPID, GETUID, HOSTNM,
IARGC, IERRNO, INMAX, IOINIT, IRAND, ISATTY, JDATE, KILL, LINK, LNBLNK, LONG, LSTAT, LSTAT64,
MALLOC, NARGS, PUTC, RAN, RAND, RENAME, RINDEX, RTC, SECNDS, SECOND,
SH, SHORT, SIGNAL, STAT, STAT64, SYMLNK, SYSTEM, TCLOSE, TIME, TIMEF, TTYNAM, UNLINK, WAIT
ANSI/ISOCompliant
Fortran 95
LF64 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
LF64 Linux Express
includes email technical support at no extra charge.
Automatic Parallelization
The LF64 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, LF64 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 LF64 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. LF64 PRO v8.1 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 LF64 Linux PRO v8.1 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, 64bit, 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. Designed for use with X11R6 and Open Motif 2.2.
X/Winteracter offers a wide range of powerful GUI capabilities to the Fortran 9x developer under X Windows, including:
 Multiple windows.
 Memory bitmap manipulation & bitmap viewer windows.
 Text editor windows, with optional command lines.
 Event handling.
 Text based menus, including floating menus (toolbars have still to be implemented).
 Dialog handling, including tabbed dialogs and nearly all control types (grid controls are the current exception).
 Common dialogs, e.g. file selector, message box, etc.
 Presentation graphics.
 and more!
Below are examples of WiSK's capabilities, visit the WiSK Examples Page for more examples.
BLAS and LAPACK
BLAS is a library for vector and matrix operations. The BLAS threadsafe version is based on BLAS
provided on Netlib. 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:
 the threadsafe version can be used in the environment of SMP (Symmetric Multiple
Processing)
 subroutines of the threadsafe version can be called from an OpenMP Fortran program
The purpose of using BLAS threadsafe 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.
LAPACK is a library of linear algebra routines. The LAPACK threadsafe version is based on LAPACK 3.0 provided on Netlib. LAPACK includes approximately 300 functions. The total number of routines for all precision types amounts to approximately 1100.
LAPACK provides the following routines:
 Linear equations
 Linear least squares problems
 Eigenvalue problems
 Singular value decomposition
The LAPACK threadsafe version, like the BLAS version, can be called from an OpenMP program in the environment of SMP.
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. 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
LF64 System Requirements
Hardware
 Intelİ EM64T or AMDİ AMD64 64bit processor.
 32 MB of RAM.
 70 MB of available hard disk space for LF64 Linux PRO; 40 MB for LF64 Linux
Express.
Software
 XWindows to useWiSK and view the online PDF documentation.
 64bit version of as, the GNU assembler.
 64bit version of ld, the GNU linker.
 64bit versions of C startup and support object files crt1.o, crti.o, crtn.o, crtbegin.
o, and crtend.o.
 64bit versions of C runtime and support libraries libc, libm, libpthread, librt,
libgcc, libgcc_eh, libgcc_s, and libelf.
 A compatible version of the Linux operating system. Table 1 shows the versions of
Linux that are known to be compatible with LF64. Other Linux variants might be
compatible if they include kernel version 2.6.9 or later and libc version 2.3.4 or later.
