Concurrent Computer Corporation

Concurrent Computer Corporation was an American technology company that developed computer systems and software for applications requiring rapid response, deterministic execution, parallel processing, and high availability. It existed as an independent business from 1985 until its operating divisions were sold in 2017. The company served technically demanding markets including aerospace and defense simulation, process control, data acquisition, weather forecasting, air-traffic control, radar simulation, financial trading, and later cable-television video-on-demand. Concurrent was created in November 1985 when Perkin-Elmer separated its Data Systems Group into a distinct company. That division had inherited technology and personnel from Interdata, a computer manufacturer acquired by Perkin-Elmer in 1974. The new company initially remained majority-owned by Perkin-Elmer, which retained an 82 percent interest after a minority public offering in February 1986. Concurrent's shares traded on NASDAQ. James K. Sims, previously general manager of Perkin-Elmer's computer unit, became president and chief executive officer. The company's early identity was built around 32-bit superminicomputers and multiprocessor systems. Its product portfolio included the Series 3200, derived from the Interdata lineage, and the Motorola-based Series 5000 and Series 6000. These systems ran real-time operating environments and were designed for high-speed applications in which response time and predictable execution mattered more than general-purpose office computing. Aircraft simulators were an especially important application. Concurrent also developed language tools for defense and aerospace customers, including C3Ada, an Ada compiler for OS/32, and worked on issues involving Ada tasking and multiprocessor real-time systems. In 1988, Concurrent merged with Massachusetts Computer Corporation, commonly known as MASSCOMP. Although MASSCOMP was technically the acquiring company, the surviving business retained the Concurrent name and the larger company's New Jersey headquarters. The combination was intended to unite Concurrent's high-end systems with MASSCOMP's lower-end real-time products and Unix expertise. The merged company adopted MASSCOMP's real-time Unix environment, known as RTU, for parts of its product range. The transaction also placed a substantial debt burden on the business. Recession, layoffs, cultural conflict, competing development organizations, and stronger offerings from larger computer companies made the integration difficult. During the 1990s, Concurrent continued to sell real-time computers and participate in the Ada standards and tooling community. The Series 8000, based on the MIPS R3000 processor, extended the company's systems portfolio. At the same time, debt restructuring and a debt-for-equity exchange reduced the company's debt substantially. In 1996, Concurrent acquired Harris Computer Systems' high-performance computer business, moving its headquarters to Fort Lauderdale, Florida. The company later relocated its headquarters to Duluth, Georgia, in 1999, while retaining manufacturing and service operations in Florida. Concurrent subsequently broadened its focus toward digital video delivery and storage. Its MediaHawk product line targeted video-on-demand systems used by telecommunications and cable operators, including customers such as AOL Time Warner and Cox Communications. The company nevertheless retained a real-time computing business serving defense and industrial customers, including Lockheed Martin. In the 2000s, its real-time systems increasingly used Intel- and AMD-compatible hardware and the RedHawk Linux operating system, an adaptation of enterprise Linux optimized for real-time workloads. The iHawk family represented this later generation of real-time computing systems. Concurrent ceased to exist as a unified independent company after its divisions were sold during 2017. Battery Ventures acquired the real-time systems business in May 2017 for $35 million, creating Concurrent Real-Time. That business was subsequently acquired by Brüel & Kjær, a Spectris subsidiary, in July 2021. Vecima Networks acquired the video content delivery and storage business in October 2017 for $29 million; the transaction appears to have completed in early 2018. The brand therefore survives mainly through successor businesses and technologies rather than as an operating company under its former corporate structure.

Concurrent Computer Corporation emerged from the computing operations of Perkin-Elmer in November 1985. Those operations traced their technical lineage to Interdata, which Perkin-Elmer had acquired in 1974. The separation was intended to give the computing business a clearer identity and access to public capital. Perkin-Elmer initially owned the new company outright, then retained an 82 percent stake after a minority offering in February 1986. James K. Sims, formerly responsible for Perkin-Elmer's computer unit, became Concurrent's first president and chief executive. The early company concentrated on 32-bit superminicomputers, parallel processing, and real-time operating environments. The Series 3200 carried forward Interdata-derived technology, while the Series 5000 and Series 6000 used Motorola processors and targeted applications requiring rapid, predictable responses. Aircraft simulation was a prominent market, and defense and aerospace customers influenced the company's investment in Ada compiler technology. C3Ada, introduced in 1987, supported Ada development on OS/32 and passed the Ada Compiler Validation Capability testing associated with early commercial Ada products. Concurrent also studied how Ada tasking and Fortran optimization behaved on shared-memory multiprocessors. In August 1988, Concurrent announced a merger with Massachusetts Computer Corporation, or MASSCOMP. The transaction closed on September 27. Although MASSCOMP was formally the acquirer, the larger business's name, leadership, and New Jersey headquarters were retained. The strategic rationale was to combine Concurrent's higher-end systems with MASSCOMP's lower-end real-time computers and Unix capabilities. MASSCOMP's Real-time Unix, known as RTU, became an important operating environment for the combined product portfolio. The integration was difficult. Acquisition financing created a heavy debt burden, while the recession of the early 1990s weakened demand. The companies' development organizations and corporate cultures were not easily combined, and Concurrent faced stronger competition from large vendors such as IBM and Digital Equipment Corporation. Layoffs reduced the workforce in Monmouth County, New Jersey, where Concurrent had once been a major private employer. Leadership changed several times, with Denis R. Brown succeeding Sims in 1990 and John Stihl becoming chief executive in 1993. Concurrent nevertheless continued developing real-time systems and participated in Ada-related standards work, including the Ada 9X process and the Ada Semantic Interface Specification effort. The Series 8000, using the MIPS R3000 processor and RTU, represented the company's early-1990s systems direction. Its applications included weather forecasting, air-traffic control, radar simulation, and financial trading. Through restructuring and a debt-for-equity exchange, the company reduced its debt from approximately $200 million to less than $25 million by 1995. In 1996, after earlier unsuccessful discussions, Concurrent acquired Harris Computer Systems' high-performance computer business. The deal shifted corporate headquarters to Fort Lauderdale, Florida, while New Jersey operations continued to contract. The former Oceanport headquarters was sold in 1997, although a smaller manufacturing and service presence remained for older product lines. Concurrent moved its headquarters again in 1999, this time to Duluth, Georgia. Under chief executive E. Courtney "Corky" Siegel, management emphasized the MediaHawk video-on-demand business and pursued customers in the cable and telecommunications sectors. The company also continued serving defense customers and retained its real-time systems expertise. During the 2000s, MediaHawk addressed video delivery and storage, while the real-time portfolio evolved toward Intel- and AMD-based systems using RedHawk Linux, Concurrent's real-time adaptation of Red Hat Enterprise Linux. The iHawk systems line embodied this later hardware and software combination. The corporate entity was dismantled through asset sales in 2017. Battery Ventures purchased the real-time systems business in May, creating Concurrent Real-Time. Vecima Networks acquired the video content delivery and storage business in October, with closing apparently occurring in early 2018. Concurrent Real-Time was later sold to Brüel & Kjær, part of Spectris, in July 2021. These transactions ended Concurrent Computer Corporation's life as a unified operating company.

• 2017

  Operating divisions are sold

  [1]Concurrent Computer Corporationen.wikipedia.org

  The real-time systems business was sold to Battery Ventures and the video business to Vecima Networks, ending Concurrent as an integrated company.

• 1999

  Headquarters moves to Georgia

  [1]Concurrent Computer Corporationen.wikipedia.org

  Concurrent relocated its headquarters to Duluth, Georgia.

• 1996

  Harris high-performance computing business acquired

  [1]Concurrent Computer Corporationen.wikipedia.org

  Concurrent acquired Harris Computer Systems' high-performance computing operations and moved its headquarters to Florida.

• 1988

  MASSCOMP merger closes

  [1]Concurrent Computer Corporationen.wikipedia.org

  The merger with MASSCOMP completed on September 27, combining real-time Unix capabilities with Concurrent's higher-end systems.

• 1987

  C3Ada is introduced

  [1]Concurrent Computer Corporationen.wikipedia.org

  Concurrent released its C3Ada compiler for OS/32 and became involved in advanced Ada validation and real-time language work.

• 1986

  Minority public offering

  [1]Concurrent Computer Corporationen.wikipedia.org

  Concurrent's minority interest was sold to public investors, with Perkin-Elmer retaining an 82 percent stake.

• 1985

  Concurrent is established

  [1]Concurrent Computer Corporationen.wikipedia.org

  Perkin-Elmer spun out its Data Systems Group as Concurrent Computer Corporation in November.

• 1974

  Perkin-Elmer acquires Interdata

  [1]Concurrent Computer Corporationen.wikipedia.org

  The computing technology and organizational heritage that later became Concurrent entered Perkin-Elmer through its acquisition of Interdata.

Concurrent positioned itself as a specialist provider of deterministic, high-performance computing for mission-critical real-time workloads, later extending that specialist role into video-on-demand infrastructure.

• Real-time superminicomputer

  Series 3200

  The Series 3200 was the oldest major product line associated with Concurrent's Interdata heritage. It used a proprietary discrete-component processor built around AMD Am2900 bit-slice technology and supported multiple register sets. The system ran OS/32 and was aimed at real-time workloads requiring fast response and specialized processing.

• Real-time computer system

  Series 5000

  The Series 5000 used Motorola 68020-based technology and targeted high-end rapid-response applications. After the MASSCOMP merger, versions of the system were associated with the RTU real-time Unix environment, broadening the operating-system choices available to Concurrent customers.

• Real-time computer system

  Series 6000

  The Series 6000 extended Concurrent's Motorola-based real-time systems, using the 68030 processor family. It was designed for demanding applications such as simulation, control, and data acquisition where deterministic execution was important.

• MIPS real-time computer system

  Series 8000

  The Series 8000 used the MIPS R3000 processor and RTU real-time Unix. Its application areas included weather forecasting, air-traffic control, radar simulation, and financial trading, reflecting Concurrent's continued emphasis on mission-critical computing.

• Real-time computing platform

  iHawk

  iHawk systems represented a later generation of Concurrent real-time computers based on Intel and AMD processor architectures. They were commonly paired with RedHawk Linux, Concurrent's real-time Linux environment, and served industrial, defense, simulation, and other time-sensitive applications.

• Video-on-demand and content delivery system

  MediaHawk

  MediaHawk was Concurrent's video-on-demand, content delivery, and storage portfolio. It targeted telecommunications and cable operators and became a major strategic focus in the late 1990s and 2000s, alongside the company's continuing real-time computing business.

• Real-time operating system

  RedHawk Linux

  RedHawk Linux was Concurrent's adaptation of Red Hat Enterprise Linux for real-time workloads. It provided the software foundation for later systems such as iHawk and was intended to offer Linux compatibility while supporting more predictable timing behavior.

• 2017

  Sell the company by operating divisionM&A

  Background

  Concurrent's real-time computing and video businesses had developed into separable operating units.

  Action taken

  Battery Ventures acquired the real-time systems business, while Vecima Networks acquired the video content delivery and storage business.

  Aftermath

  Concurrent ceased operating as a unified independent company. The real-time business later moved to Brüel & Kjær, a Spectris subsidiary.

  Source

• 1999

  Relocate headquarters and emphasize video-on-demandStrategy

  Background

  Management sought better access to executives and technical talent while identifying video delivery as a growth opportunity.

  Action taken

  Concurrent moved its headquarters to Duluth, Georgia and emphasized MediaHawk, while retaining its real-time systems business.

  Aftermath

  Video delivery became a significant business, but real-time systems remained an important source of revenue and technical identity.

  Source

• 1996

  Acquire Harris Computer Systems' high-performance computing businessM&A

  Background

  Concurrent and Harris Computer Systems resumed acquisition discussions after earlier negotiations had ended acrimoniously.

  Action taken

  Concurrent acquired Harris's high-performance computer business and moved its headquarters to Fort Lauderdale, Florida.

  Aftermath

  The acquisition expanded Concurrent's high-performance computing activities while its New Jersey operations continued to contract.

  Source

• 1988

  Merge with MASSCOMPM&A

  Background

  Concurrent sought to combine its high-end real-time and parallel-processing systems with MASSCOMP's lower-end offerings and Unix expertise.

  Action taken

  MASSCOMP technically acquired Concurrent, but the combined company retained the Concurrent name, leadership, and New Jersey headquarters.

  Aftermath

  The merger created a broader product portfolio but also produced substantial debt, cultural conflict, product-development friction, layoffs, and difficulty competing with larger vendors.

  Source

1. 1Concurrent Computer Corporationen.wikipedia.org