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IRIX

IRIX 6. 5 Desktop
Website SGI IRIX
Company/
developer		 Silicon Graphics
OS family Unix
Source model Closed source
Latest stable release 6. A website (alternatively web site or Web site, a back-construction from the Proper noun World Wide Web) is a collection of Web pages The software industry comprises businesses involved in the development, maintenance and publication of Computer software. A software developer is a person or organization concerned with facets of the software development process wider than design and coding a somewhat broader scope of Silicon Graphics Inc (commonly initialised to SGI, historically sometimes referred to as Silicon Graphics Computer Systems or SGCS) is a company Unix (officially trademarked as UNIX, sometimes also written as Unix with Small caps) is a computer Proprietary software is Computer software on which the producer has set restrictions on use private modification copying, or republishing. 5. 30 / August 16, 2006
Kernel type Monolithic kernel
Default user interface IRIX Interactive Desktop
License Proprietary
Working state Current (EOL)

IRIX is a computer operating system developed by Silicon Graphics, Inc. (SGI) to run natively on their 32- and 64-bit MIPS architecture workstations and servers. Events 1384 - The Hongwu Emperor of Ming China, Emperor Dong hears a case of a couple who tore paper money bills while fighting Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. In Computer science, the kernel is the central component of most computer Operating systems (OS A monolithic kernel is a kernel architecture where the entire kernel is run in Kernel space in Supervisor mode. The user interface (or Human Computer Interface) is the aggregate of means by which people&mdash the users '&mdash interact with the System IRIX Interactive Desktop (originally called Indigo Magic) is a Desktop environment normally used as the default desktop on Silicon Graphics workstations A software license (or software licence in commonwealth usage is a Legal instrument governing the usage or redistribution of copyright protected software Proprietary software is Computer software on which the producer has set restrictions on use private modification copying, or republishing. An operating system (commonly abbreviated OS and O/S) is the software component of a Computer system that is responsible for the management and coordination Silicon Graphics Inc (commonly initialised to SGI, historically sometimes referred to as Silicon Graphics Computer Systems or SGCS) is a company MIPS (originally an acronym for Microprocessor without Interlocked Pipeline Stages) is a RISC microprocessor architecture developed by MIPS Technologies Based on UNIX System V with BSD extensions, it is capable of extremely long uptimes, and its XFS file system is regarded as one of the most advanced journaling file systems in the industry. Unix System V, commonly abbreviated SysV (and usually pronounced though rarely written as System 5 was one of the versions of the Unix Operating system Uptime is a measure of the time a Computer system has been "up" and running XFS is a high-performance Journaling file system created by Silicon Graphics, originally for their IRIX Operating system and later ported to A journaling file system is a File system that logs changes to a journal (usually a circular log in a dedicated area before committing them to the main file

The current major version of IRIX is IRIX 6. 5 which was released in May 1998. New minor versions of IRIX 6. 5 were released every quarter until 2005; since then there have been four further minor releases. Through version 6. 5. 22, there were two branches of each release: a maintenance release (identified by an m suffix to the version number) that included only fixes to the original IRIX 6. 5 code, and a feature release (with an f suffix) that included improvements and enhancements. An overlay upgrade from 6. 5. x to the 6. 5. 22 maintenance release is available for free download, while version 6. 5. 23 and higher require an active Silicon Graphics support contract, despite only running on Silicon Graphics hardware.

Contents

History

The IRIX name was first used around the time of release 3. 0 of the operating system for SGI's IRIS 4D series of workstations and servers, in 1988. Previous releases were identified only by the release number prefixed by "4D1-", eg. "4D1-2. 2". The 4D1- prefix continued to be used in official documentation to prefix IRIX release numbers.

IRIX 3. x was based on UNIX System V Release 3 with 4.3BSD enhancements, and incorporated the 4Sight windowing system, based on NeWS and IRIS GL. Unix System V, commonly abbreviated SysV (and usually pronounced though rarely written as System 5 was one of the versions of the Unix Operating system See also Indigo Magic Desktop IRIS Workspace IRIX Interactive Desktop MEX A windowing system (or window system) is a component of a Graphical user interface (GUI and more specifically of a Desktop environment, which supports News is any new information or information on Current events which is presented by print, broadcast, Internet, or Word of mouth IRIS GL ( I ntegrated R aster I maging S ystem G raphics L ibrary was a proprietary graphics API created by Silicon SGI's own Extent File System (EFS) replaced the System V filesystem. There is also a ( different) file system called EFS under Microsoft Windows 2000. [1]

IRIX 4. 0, released in 1991, replaced 4Sight with the X Window System (X11R4), the 4Dwm window manager providing a similar look and feel to 4Sight. 4Dwm is a Window manager normally used on Silicon Graphics workstations running IRIX. A window manager is Computer software that controls the placement and appearance of windows within a Windowing system in a Graphical user interface [1]

IRIX 5. 0, released in 1993, incorporated certain features of UNIX System V Release 4, including ELF-format executables. In Computing, the Executable and Linking Format ( ELF, formerly called Extensible Linking Format) is a common standard File format for Executables [2] IRIX 5. 3 introduced the XFS journaling file system. XFS is a high-performance Journaling file system created by Silicon Graphics, originally for their IRIX Operating system and later ported to A journaling file system is a File system that logs changes to a journal (usually a circular log in a dedicated area before committing them to the main file

In 1994, IRIX 6. 0 added support for the 64-bit MIPS R8000 processor, but was otherwise similar to IRIX 5. MIPS (originally an acronym for Microprocessor without Interlocked Pipeline Stages) is a RISC microprocessor architecture developed by MIPS Technologies 2. Later 6. x releases supported other members of the MIPS processor family in 64-bit mode. IRIX 6. 3 was released for the SGI O2 workstation only. The O2 is an entry-level Unix Workstation introduced in 1996 by Silicon Graphics (SGI to replace their earlier Indy series [3] IRIX 6. 4 improved multiprocessor scalability for the Octane, Origin 2000, and Onyx2 systems. Multiprocessing is the use of two or more central processing units (CPUs within a single computer system The SGI Octane and the similar SGI Octane2 are UNIX workstations marketed by SGI. The SGI Origin 2000, code named Lego, is a family of mid-range and high-end servers developed and manufactured by SGI, introduced in 1996 to succeed the The SGI Onyx2, code name Kego, is a family of visualization systems developed and manufactured by SGI, introduced in 1996 to succeed the The Origin 2000 and Onyx2 IRIX 6. 4 was marketed as "Cellular IRIX", although it only incorporated some features from the original Cellular IRIX distributed operating system project. Parallel computing is a form of computation in which many instructions are carried out simultaneously operating on the principle that large problems can often [4] IRIX 6. 4 had severe reliability issues, limiting its adoption. IRIX development stabilized with IRIX 6. 5, released in 1998. The current version of IRIX is 6. 5. 30, released in August 2006.

Features

IRIX 6 is compliant with UNIX System V Release 4, UNIX 95 and POSIX (including 1e/2c draft 15 ACLs and Capabilities). Unix System V, commonly abbreviated SysV (and usually pronounced though rarely written as System 5 was one of the versions of the Unix Operating system The Single UNIX Specification ( SUS) is the collective name of a family of standards for Computer Operating systems to qualify for the name " Unix POSIX (ˈpɒzɪks or "Portable Operating System Interface" is the collective name of a family of related standards specified by the IEEE to define In Computer security, an access control list ( ACL) is a list of permissions attached to an object Capability-based security is a concept in the design of Secure computing systems

IRIX has strong support for real-time disk and graphics I/O. IRIX was one of the first Unix versions to feature a graphical user interface for the main desktop environment. IRIX was widely used in the computer animation industry and for scientific visualization due to its once-large application base. Computer-generated imagery Computer animation is the art of creating moving images with the use of Computers It is a subfield of Computer graphics See also Visualization and Information graphics Visualization is any technique for creating Images Diagrams or

IRIX was a leader in Symmetric Multi-Processing (SMP), scalable from 1 to greater than 1024 processors with a single system image.

IRIX uses the Indigo Magic Desktop, which by default uses the 4Dwm X window manager with a custom look designed using the Motif widget toolkit. IRIX Interactive Desktop (originally called Indigo Magic) is a Desktop environment normally used as the default desktop on Silicon Graphics workstations 4Dwm is a Window manager normally used on Silicon Graphics workstations running IRIX. An X window manager is a Window manager which runs on top of the X Window System, a Windowing system mainly used on Unix-like systems In computing Motif refers to both a Graphical user interface (GUI specification and the Widget toolkit for building applications that follow that specification A widget toolkit, widget library, or GUI toolkit is a set of widgets for use in designing applications with Graphical user interfaces (GUIs

IRIX retirement

SGI announced the end of the MIPS/IRIX-based product line in a press release on 6 September 2006. A news release, media release, press release or press statement is a written or recorded Communication directed at members of the News Events 3114 BC - According to the Proleptic Julian calendar the current era in the Maya Long Count Calendar started Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. [5] Production ended on 29 December 2006 with last deliveries in March 2007, except by special arrangement. Events 1170 - Thomas Becket: Thomas Becket Archbishop of Canterbury is assassinated inside Canterbury Cathedral by followers of King Henry II Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Support for these products will end no sooner than December 2013. All current SGI computer systems run Red Hat Enterprise Linux or SUSE Enterprise Linux Server.

References

  1. ^ a b History of IRIX (2007-01-18). Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 350 - Generallus Magnentius deposes Roman Emperor Constans and proclaims himself Emperor Retrieved on 2007-11-02. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1570 - A Tidal wave in the North Sea devastates the coast from Holland to Jutland, killing more than 1000
  2. ^ Tracy Perkins (1993-05-25). "Silicon Graphics announces compliance of MIPS ABI". comp.sys.sgi.announce. (Web link). Retrieved on 2007-11-02. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1570 - A Tidal wave in the North Sea devastates the coast from Holland to Jutland, killing more than 1000
  3. ^ SGIstuff : Software : Irix Versions. Retrieved on 2007-11-02. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1570 - A Tidal wave in the North Sea devastates the coast from Holland to Jutland, killing more than 1000
  4. ^ Dave Olson (1999-11-04). "Re: Blue Mountain / Origin 2000". comp.sys.super. (Web link). Retrieved on 2007-11-02. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1570 - A Tidal wave in the North Sea devastates the coast from Holland to Jutland, killing more than 1000
  5. ^ SGI - Services & Support: End of General Availability for MIPS IRIX Products. Retrieved on 2007-11-02. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1570 - A Tidal wave in the North Sea devastates the coast from Holland to Jutland, killing more than 1000

See also

External links

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