About: Cray J90

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The Cray J90 series (code-named Jedi during development) was an air-cooled vector processor supercomputer first sold by Cray Research in 1994. The J90 evolved from the Cray Y-MP EL minisupercomputer, and is compatible with Y-MP software, running the same UNICOS operating system. The J90 supported up to 32 CMOS processors with a 10 ns (100 MHz) clock. It supported up to 4 GB of main memory and up to 48 GB/s of memory bandwidth, giving it considerably less performance than the contemporary Cray T90, but making it a strong competitor to other technical computers in its price range. All input/output in a J90 system was handled by an IOS (Input/Output Subsystem) called IOS Model V. The IOS-V was based on the VME64 bus and SPARC I/O processors (IOPs) running the VxWorks RTOS. The IOS was program

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  • The Cray J90 series (code-named Jedi during development) was an air-cooled vector processor supercomputer first sold by Cray Research in 1994. The J90 evolved from the Cray Y-MP EL minisupercomputer, and is compatible with Y-MP software, running the same UNICOS operating system. The J90 supported up to 32 CMOS processors with a 10 ns (100 MHz) clock. It supported up to 4 GB of main memory and up to 48 GB/s of memory bandwidth, giving it considerably less performance than the contemporary Cray T90, but making it a strong competitor to other technical computers in its price range. All input/output in a J90 system was handled by an IOS (Input/Output Subsystem) called IOS Model V. The IOS-V was based on the VME64 bus and SPARC I/O processors (IOPs) running the VxWorks RTOS. The IOS was programmed to emulate the IOS Model E, used in the larger Cray Y-MP systems, in order to minimize changes in the UNICOS operating system. By using standard VME boards, a wide variety of commodity peripherals could be used. The J90 was available in three basic configurations, the J98 with up to eight processors, the J916 with up to 16 processors, and the J932 with up to 32 processors. Each J90 processor was composed of two chips - one for the scalar portion of the processor, and the other for the vector portion. The scalar chip was also notable for including a small (128 word) data cache to enhance scalar performance. (Cray machines have always had instruction caching.) In 1997 the J90se (Scalar Enhanced) series became available, which doubled the scalar speed of the processors to 200 MHz; the vector chip remained at 100 MHz. Support was also added for the GigaRing I/O system found on the Cray T3E and Cray SV1, replacing IOS-V. Later, SV1 processors could be installed in a J90 or J90se, further increasing performance within the same frame. (en)
  • La serie Cray J90 (que recibió el nombre código Jedi durante su desarrollo) fue una supercomputadora de procesadores escalares enfriada por aire que fue vendida por primera vez por Cray Research en 1994. La J90 evolucionó desde la minisupercomputadora Cray Y-MP EL, y es compatible con el software Y-MP, corriendo el mismo sistema operativo UNICOS. El J90 soportaba hasta 32 procesadores CMOS con un ciclo de reloj de 10 ns (100 MHz) y hasta 4 GB de memoria principal, y un flujo de datos de hasta 48 GB/s, teniendo un rendimiento considerablemente menor a su contemporáneo Cray T90, pero era un fuerte competidor de otros computadores técnicos en ese rango de precios. Toda la entrada/salida en un sistema J90 estaba manejada por un SES (Subsistema de Entrada/Salida) llamado IOS Modelo V (IOS, "Input/Output Subsystem"). El IOS-V estaba basado en el bus y en procesadores de E/S SPARC corriendo el VxWorks RTOS. EL SES fue programado para emular el IOS Modelo E, usado en los sistemas más grandes Cray Y-MP, para minimizar los cambios en el sistema operativo UNICOS. Mediante el uso de placas VME estándar, una amplia variedad de periféricos básicos podían ser utilizados. El J90 estaba disponible en tres configuraciones básicas, el J98 con hasta ocho procesadores, el J916 con hasta 16 procesadores, y el J932 con hasta 32 procesadores. Cada procesador J90 estaba compuesto de dos chips, uno para la parte escalar del procesador, y el otro para la parte vectorial. El CI escalar era notable por incluir una pequeña caché (128 palabras) para incrementar el rendimiento escalar (las máquinas Cray tenían siempre una caché de instrucciones). En 1997 la serie J90se (Scalar Enhanced, o "Escalar Mejorado") estuvo disponible, duplicaba la velocidad escalar de los procesadores a 200 MHz; el CI vectorial permanecía a 100 MHz. Se agregó soporte para el sistema de E/S GigaRing encontrado en el Cray T3E y el Cray SV1, reemplazando al IOS-V. Más tarde, los procesadores SV1 podían ser instalados en un J90 o un J90se, incrementado las prestaciones en el mismo gabinete. (es)
  • La serie Cray J90 (nome in codice durante lo sviluppo Jedi) è una serie di supercomputer basati su processori vettoriali e un sistema di raffreddamento a liquido sviluppata dalla Cray Research e commercializzata nel 1994. Il J90 era un'evoluzione del Cray Y-MP EL ed era compatibile con il software Y-MP. Il sistema utilizzava il sistema operativo UNICOS. Il J90 gestiva fino a 32 processori CMOS da 100 MHz (10 ns). La memoria massima era di 4 GB e la banda passante massima del sistema era di 48 GB/s prestazioni non eccezionali rispetto al contemporaneo Cray T90 ma notevoli per la gamma di prezzo che occupava il J90. La gestione dell'I/O era demandata all'IOS (Input/Output Subsystem) chiamato IOS Model V. L'IOS-V era basato su processori SPARC e sul bus VME64 e sul sistema operativo in tempo reale VxWorks. Il J90 era disponibile in tre configurazioni, il J98 con 8 processori, il J916 con 16 processori e il J932 con 32 processori. Nel 1997 venne presentato la serie J90se con processori a 200 MHz e con l'aggiunta del sistema GigaRing I/O basato su quello utilizzato dai Cray T3E e Cray SV1 che sostituiva l'IOS-V. Successivamente vennero installati i processori SV1 sul J90se per incrementare le prestazioni del sistema senza modificarne l'architettura. (it)
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  • The Cray J90 series (code-named Jedi during development) was an air-cooled vector processor supercomputer first sold by Cray Research in 1994. The J90 evolved from the Cray Y-MP EL minisupercomputer, and is compatible with Y-MP software, running the same UNICOS operating system. The J90 supported up to 32 CMOS processors with a 10 ns (100 MHz) clock. It supported up to 4 GB of main memory and up to 48 GB/s of memory bandwidth, giving it considerably less performance than the contemporary Cray T90, but making it a strong competitor to other technical computers in its price range. All input/output in a J90 system was handled by an IOS (Input/Output Subsystem) called IOS Model V. The IOS-V was based on the VME64 bus and SPARC I/O processors (IOPs) running the VxWorks RTOS. The IOS was program (en)
  • La serie Cray J90 (que recibió el nombre código Jedi durante su desarrollo) fue una supercomputadora de procesadores escalares enfriada por aire que fue vendida por primera vez por Cray Research en 1994. La J90 evolucionó desde la minisupercomputadora Cray Y-MP EL, y es compatible con el software Y-MP, corriendo el mismo sistema operativo UNICOS. El J90 soportaba hasta 32 procesadores CMOS con un ciclo de reloj de 10 ns (100 MHz) y hasta 4 GB de memoria principal, y un flujo de datos de hasta 48 GB/s, teniendo un rendimiento considerablemente menor a su contemporáneo Cray T90, pero era un fuerte competidor de otros computadores técnicos en ese rango de precios. Toda la entrada/salida en un sistema J90 estaba manejada por un SES (Subsistema de Entrada/Salida) llamado IOS Modelo V (IOS, "Inp (es)
  • La serie Cray J90 (nome in codice durante lo sviluppo Jedi) è una serie di supercomputer basati su processori vettoriali e un sistema di raffreddamento a liquido sviluppata dalla Cray Research e commercializzata nel 1994. Il J90 era un'evoluzione del Cray Y-MP EL ed era compatibile con il software Y-MP. Il sistema utilizzava il sistema operativo UNICOS. Il J90 gestiva fino a 32 processori CMOS da 100 MHz (10 ns). La memoria massima era di 4 GB e la banda passante massima del sistema era di 48 GB/s prestazioni non eccezionali rispetto al contemporaneo Cray T90 ma notevoli per la gamma di prezzo che occupava il J90. La gestione dell'I/O era demandata all'IOS (Input/Output Subsystem) chiamato IOS Model V. L'IOS-V era basato su processori SPARC e sul bus VME64 e sul sistema operativo in tempo (it)
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  • Cray J90 (en)
  • Cray J90 (es)
  • Cray J90 (it)
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