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IRIX 6.3 was released for the SGI O2 workstation only. [7] 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 incorporates some features from the original Cellular IRIX distributed operating system project. [9] [10]
The SGI Octane with IMPACT-class graphics was first supported by IRIX version 6.4. VPro-class graphics have been supported since IRIX version 6.5.10 for V6 and V8, with V10 and V12 graphics supported as of 6.5.11 (or 6.5.10 with a special driver patch). Linux and OpenBSD have had support.
These systems ran the IRIX 6.5 Advanced Server Environment operating system. Entry-level variants of these systems based on the same architecture but with a different hardware implementation are known as the Origin 300 and Onyx 300.
IRIX Interactive Desktop has two primary components: the System Manager and the Toolchest. The System Manager is the main utility for desktop and system configuration. The Toolchest is a menu (normally located on the desktop) that shows which applications are installed on a particular Silicon Graphics workstation.
The Fuel usually shipped with 10,000 rpm SCSI disks, but it can take good advantage of 15,000 rpm models, with sustained bandwidths up to three times faster than is possible with Octane2's internal UW bus. The Fuel was also the first SGI system to support USB devices in IRIX, although audio and HID USB devices were the only ones supported.
IRIX® 6.5 offers system scalability and binary compatibility across the MIPS® processor-based family of platforms and is compliant with UNIX® System V Release 4 and The Open Group's many standards, including UNIX 95 and POSIX®.
The RealityEngine2 is the original high-end graphics subsystem for the Onyx and was found in two different versions: deskside and rack. The deskside model has one GE10 (Geometry Engine) board with 12 Intel i860XP processors, up to four RM4 or RM5 (Raster Manager) boards, and a DG2 (Display Generator) board. [4]
Indy was launched with the IRIX 5.1 operating system, [1] by which it is binary-compatible across the entire SGI family. [1] [3] 5.1 does not take full advantage of the hardware due to inadequate memory management. Later in 1993, SGI increased the base specification to 32 MB. IRIX 5.2 and later have much more efficient memory usage. [3]