In 1994, IRIX 6.0 added support for the 64-bit MIPS R8000 processor, but was otherwise similar to IRIX 5.2. 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.[1] IRIX 6.4 improved multiprocessor scalability for the Octane, Origin 2000, and Onyx2 systems. 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.[2] 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.

IRIX 6 is compliant with UNIX System V Release 4, UNIX 95 and POSIX (including 1e/2c draft 15 ACLs and Capabilities).

  2. news:comp.sys.super | news:JQbU3.135$ |
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SGI IRIX 6.x branch
Preceded by
SGI IRIX 6.x Followed by