AccelGraphics
| Company type | Private |
|---|---|
| Industry | Computer hardware, Workstations, Supercomputers |
| Predecessor | Ardent Computer Corporation, Stellar Computer Inc. |
| Founded | 1989 |
| Founder | William Poduska (Stellar), Allen Michels and Matthew Sanders III (Ardent) |
| Defunct | 1994 |
| Fate | Liquidation; technologies divested; brand discontinued |
| Successor | Kubota Pacific Computers (for Titan workstation operations), AVS software company |
| Headquarters | Newton, Massachusetts , United States |
Area served | Worldwide |
Key people | William Poduska (CEO), Gordon Bell (Chief Scientist) |
| Products | Titan workstation, Vistra workstation, Stellar GS series workstations |
| Owner | Kubota Corporation (major investor) |
| Parent | Kubota Corporation (investor and controlling shareholder) |
Stardent Computer, Inc. emerged in the late 1980s as a producer of graphics-oriented supercomputer workstations, established in 1989 through the consolidation of Ardent Computer Corporation (previously known as Dana Computer, Inc.) and Stellar Computer Inc.
Both entities originated in 1985 but pursued distinct market segments: Stellar concentrated on delivering high-performance workstation solutions, whereas Ardent engineered a specialized vector processor to challenge large-scale supercomputers in graphics applications. Although Ardent had intentions to launch a workstation rivaling Stellar’s offerings, the two companies merged instead, eliminating overlapping product lines.
Despite its technological strengths, Stardent faced intense competition from larger firms, with revenues peaking near $40 million in 1990. Prior to its dissolution in 1994, the company divested certain technologies.
Stellar Computer
Founded in 1985 in Newton, Massachusetts by William Poduska—who previously established Prime Computer and Apollo Computer—Stellar Computer sought to develop workstations that could compete with Ardent’s Titan system at more affordable pricing. In reaction, Ardent introduced the Stiletto desktop workstation incorporating dual MIPS R3000 processors, paired FPUs (R3010), and four i860 processors dedicated to graphics computation, replacing traditional vector units. Stellar unveiled its initial product in March 1988. A capital infusion totaling $48 million was secured in June 1988, including investment from Japanese corporation Mitsui.
Ardent Computer Corporation
In November 1985, Allen Michels and Matthew Sanders III founded Dana Computer, Inc. in Sunnyvale, California, with the objective of creating a desktop multiprocessing supercomputer tailored for graphics workloads featuring up to four processors. Gordon Bell, renowned as former VAX architect, served as VP of Engineering. Each processing unit combined a MIPS CPU (starting with R2000 and later upgrading to R3000) alongside a proprietary vector processor boasting 8,192 registers of 64 bits each, enabling flexible data arrangements surpassing conventional SIMD architectures. The system operated on Unix System V Release 3 enriched with proprietary support for four-way symmetric multiprocessing and vector processing; its compiler was adapted from Convex’s Fortran and C compilers. The primary graphics framework was known as DORE (Dynamic Object Rendering Environment).
Initially slated for a July 1987 launch at a price of $50,000, the Titan supercomputer faced delays pushing testing until February 1988 and increasing the cost to $80,000. The Japanese industrial conglomerate Kubota Corporation provided financial backing and manufacturing capabilities targeting Far East markets during a period of strong Yen valuation. In December 1987, Dana Computer renamed itself Ardent Computer after discovering another local company with the same name.
Formation of Stardent
The union between competitors Stellar and Ardent was announced on August 30, 1989, and finalized by November that year; Poduska assumed the role of CEO while Bell became chief scientist.
While Stardent’s offerings were recognized for their superior performance, they were also associated with premium pricing; for instance, a 1990 model was priced at $123,400—substantially less expensive than the Cray Y-MP.
It is reported that Kubota orchestrated the merger, resulting in the original Stellar faction retaining predominant corporate authority. Some former Ardent personnel departed to establish new ventures or attempted unsuccessfully to spin off the original development team as Comet.
In July 1990, Stardent relocated its California operations to its Massachusetts headquarters. Co-chairmen Michels and Sanders initiated legal action against Kubota seeking $25 million over allegations of forced merger and technology appropriation; they were dismissed later that month following an unsuccessful settlement proposal. In August, the board removed them from their positions and consented to issue additional shares to Kubota valued at $60 million.
By August 1991, Stardent had spun off its Application Visualization System (AVS) software into an independent company. By November of the same year, Stardent discontinued use of its brand name, divested Titan workstation operations to Kubota Pacific Computers, searched for buyers for Vistra workstations, and established GS Computer Services to maintain inherited GS series systems. Investors reportedly incurred losses approximating $200 million.
The firm redirected its focus exclusively toward AVS software development; shareholders transitioned into stakeholders within this software enterprise. Attempts to sell Vistra workstations by year-end were unsuccessful; however, efforts continued to commercialize graphics technology built on the Intel i860 platform.
Ultimately opting for liquidation rather than additional funding from Kubota, Stardent—despite generating approximately $40 million in sales during 1990—found it difficult to compete against industry giants such as IBM, HP, and Silicon Graphics. Subsequently, Kubota Pacific developed a desktop 3D graphics accelerator named Denali designed for DEC Alpha-based DEC 3000 AXP workstations and marketed it under the Kenai workstation brand. The company was rebranded as Kubota Graphics Company before closing operations in 1994.
AccelGraphics
In 1994, Kubota Graphics became part of AccelGraphics, the manufacturer behind the AccelGraphics AG300 and AG500 3D graphics cards. Later, in 1998, Evans & Sutherland acquired AccelGraphics.
Products
- Titan workstation
- Vistra workstation
Stellar Graphics Supercomputer
The Stellar series, marketed as the graphics supercomputer (GS), represented a cutting-edge architecture for the late 1980s.
The Stellar GS workstation lineup comprised the GS1000 and GS2000 models. Following the merger with Ardent that created Stardent, these units were rebranded as ST1000 and ST2000. The GS2000's CPU featured four execution threads delivering a combined performance of 20 MIPS and incorporated a vector coprocessor capable of 80 MFLOPS. System memory ranged from 16 to 128MB, with 64MB being a common configuration. Its four-threaded design was based on a Barrel processor architecture analogous to that found in the CDC 6000 series and Denelcor HEP systems.
The GS2000’s graphics subsystem allowed interactive 3D rendering at rates up to 120,000 Gouraud-shaded triangles per second and 600,000 short vectors per second. It supported texture mapping and antialiasing through an accumulation buffer. Both the CPU and graphics hardware shared system memory along with the vector coprocessor.
The GS workstations operated on the X window system, featuring programmable 3D hardware accessible via the XFDI (X Floating-point Device Interface) extension, which provided bindings for C and Fortran languages. Display capabilities included resolutions of 1280×1024 pixels at either 12 or 24 bits per pixel, supporting pseudo-color and true-color modes along with 12- and 24-bit Z buffers. The GS2000 chassis measured roughly 30×48×36 inches and was paired with an expansion cabinet of similar size for peripherals such as a 9-track tape drive.
See also
- Ardent Window Manager
- Steve Blank – Former VP of Sales at Ardent
References
External links
- 1985 establishments in Massachusetts
- 1994 disestablishments in Massachusetts
- American companies established in 1985
- American companies disestablished in 1994
- Companies based in Silicon Valley
- Computer companies established in 1985
- Computer companies disestablished in 1994
- Computer workstations
- Defunct computer companies based in California
- Defunct computer companies based in Massachusetts
- Defunct computer companies of the United States
- Defunct computer hardware companies
- Defunct computer systems companies
- MIPS architecture