CRAY RESEARCH ANNOUNCES NEW

FORTRAN PROGRAMMING ENVIRONMENT



New Integrated Environment Combines Compiler, Debugger 

and Source Analysis Tools, In a Single Software Release



EAGAN, Minn., June 2, 1993 -- Cray Research, Inc. today announced the CF77 6.0

Programming Environment, which for the first time combines the newest version of the

company's industry-leading Cray Fortran 77 (CF77) compiling system with CrayTools, a

package that includes a debugger and Fortran source analysis tools, the company said.



"With this integrated approach to our compiler products, Cray customers will get full

programming environments supporting the newest releases of existing languages and new

languages like Fortran 90 more quickly than in the past," said Irene Qualters, vice president of

software for Cray Research.  She said that the company plans to make all future releases of Cray

Research compiling technology available to customers this way.



The CF77 compiling system, the main component of the integrated CF77 Programming

Environment, employs the most advanced parallel detection techniques in the industry to take

advantage of the inherent parallelism of Cray Research supercomputing systems.  Features of

the new CF77 6.0 compiling system include additional support for key Fortran 90 features such

as the WHERE statement and array intrinsics.  "Code developed now in the new Fortran language

can be compiled by the CF77 environment, allowing customers to start developing Fortran 90

programs in anticipation of our Fortran 90 programming environment due out later this year,"

said Qualters.



This new environment also works in conjunction with the CRAY T3D Emulator, a new software

tool announced separately today that provides early access to Cray Research's massively

parallel processing (MPP) programming model.  The Emulator allows programmers to develop

MPP applications on today's Cray Research parallel vector systems.



"We attribute an important piece of our on-time and quality success with our recent release of

FIDAP to Cray's Fortran compiler and its one-of-a-kind features," said Michael Engelman,

president, Fluid Dynamics International, which develops the general-purpose fluid dynamics

software package FIDAP.  "In our last month of development and testing we utilized a unique

option of the Cray Fortran compiler and discovered numerous subtle bugs in the FIDAP code. 

The option helped us quickly locate these bugs and fix them before the products's release."



The compiling system offers both manual and automatic multitasking, a process that allows

Fortran tasks to be spread across multiple central processing units (CPUs) for overall

improved performance leading to faster solutions for users.  Manually inserted multitasking

directives allow more user control and let programmers gain greater degrees of parallelism. 

Automatic multitasking, call Autotasking(TM), automatically parallelizes a program, without

intervention by the programmer.



The CF77 Programming Environment also includes vendor-specific extensions, allowing code

developed on other computer platforms, such as Control Data Corporation, IBM, and Digital

Equipment Corporation systems, to run on Cray Research systems with little or no source code

changes.  Cray Library routines released as part of the UNICOS operating system automatically

translate data to or from other internal or proprietary data formats for easy porting of data

generated on other systems.  



Included in the new programming environment are CrayTools, a compilation of X Window

System-based utilities for debugging and source code analysis.  Supporting tools that are

released with Cray's UNICOS operating system include ATExpert, an expert system that

interprets performance data and offers suggestions to improve code performance, and the visual

interfaces of many of the tools.  These additional tools will be added to the compiler

environments in future releases.



Future releases of the environment will also include CrayLibs, a group of highly optimized

scientific library routines that provide the "building blocks" to speed high-performance code

development.  These libraries are currently released as part of Cray's UNICOS operating

system.



With its optimizing compiler and easy-to-understand visual interface tools, the new product

provides the most powerful user-friendly Fortran application development environment for

new and existing supercomputing applications, Qualters said.  Cray Research's Fortran

compiler is world-renowned as the premier automatic optimizing Fortran compiler.



The CF77 6.0 Programming Environment is available on Cray Research's full product line,

from the recently announced entry-level CRAY EL98 system, to the top-of-the line CRAY C916

system, the company;s most powerful computer system.



Cray Research creates the most powerful, highest-quality computational tools for solving the

world's most challenging scientific and industrial problems.



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