Sequent Computer Systems, or Sequent, was a computer company that designed and manufactured multiprocessing computer systems. They were among the pioneers in high-performance symmetric multiprocessing (SMP) open systems, innovating in both hardware and software. Through a close partnership with Oracle Corporation that included the introduction of hardware and software optimizations, Sequent became a dominant high-end UNIX platform in the late 1980s and early 1990s.

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  • Sequent Computer Systems, or Sequent, was a computer company that designed and manufactured multiprocessing computer systems. They were among the pioneers in high-performance symmetric multiprocessing (SMP) open systems, innovating in both hardware and software. Through a close partnership with Oracle Corporation that included the introduction of hardware and software optimizations, Sequent became a dominant high-end UNIX platform in the late 1980s and early 1990s. Later, after several corporate missteps, they returned to their roots, producing a next-generation high-end platform for UNIX and Windows NT based on a non-uniform memory access architecture, NUMA-Q. As hardware prices fell in the late 1990s, and Intel shifted their server focus to the Itanium processor family, Sequent found their market shrinking. After IBM began working with Sequent on Project Monterey in October 1998, IBM became interested in Sequent's technology, and by July 1999 Sequent agreed to be acquired by them. At the time, Sequent's CEO said its technology would "find its way through IBM's entire product field" and IBM announced it would "both sell Sequent machines, and fold Sequent's technology... into its own servers", but by May 2002 a decline in sales of the models acquired from Sequent, among other reasons, led to the retirement of Sequent-heritage products. Vestiges of Sequent's innovations live on in the form of data clustering software from PolyServe, various projects within OSDL, IBM contributions to the Linux kernel, and claims in the SCO v. IBM lawsuit.
  • シークエント・コンピュータ(Sequent Computer Systems、またはSequent(シークエント))とは、マルチプロセッサコンピュータシステムを設計製造したコンピュータ企業である。 対称型マルチプロセッサ (SMP)、オープンシステムの先駆者としてハードウェア(例えばキャッシュ管理や割り込み制御)とソフトウェア(例えばリード・コピー・アップデート)両面で数々の発明をした。 オラクルとの緊密なパートナーシップによりハードウェア/ソフトウェア両面で最適化を施し、シークエントは1980年代後半から1990年代前半にかけてハイエンドUNIXプラットフォーム市場で優位に立った。 その後、いくつか経営上の失敗を経て、シークエント社はそのルーツに戻り、NUMAアーキテクチャNUMA-Qを基にしたUNIXとWindows NTのための新世代ハイエンドプラットフォームを作る。 1990年代後半にはハードウェア価格が下がってきたため、シークエントがターゲットとしていたハイエンド市場が小さくなってきた。 そしてついに1999年、IBMに買収された。 IBM は技術的にはほとんど何もせず、シークエントを捨てた。 シークエントの数々の発明の名残は、PolyServeのデータクラスタリングソフトウェアやOSDLの数々のプロジェクトやIBMのLinuxへの貢献、SCOとIBMの訴訟などに見て取ることが出来る。
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  • February 2008
  • July 2007
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  • Sequent Computer Systems, or Sequent, was a computer company that designed and manufactured multiprocessing computer systems. They were among the pioneers in high-performance symmetric multiprocessing (SMP) open systems, innovating in both hardware and software. Through a close partnership with Oracle Corporation that included the introduction of hardware and software optimizations, Sequent became a dominant high-end UNIX platform in the late 1980s and early 1990s.
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  • Sequent Computer Systems
  • シークエント・コンピュータ
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