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The Cray C90 series (initially named the Y-MP C90) was a vector processor
Vector processor

A vector processor, or array processor, is a Central processing unit design where the instruction set includes operations that can perform mathematical operations on multiple data elements simultaneously....
 supercomputer
Supercomputer

A supercomputer is a computer that is at the frontline of current processing capacity, particularly speed of calculation. Supercomputers introduced in the 1960s were designed primarily by Seymour Cray at Control Data Corporation , and led the market into the 1970s until Cray left to form his own company, Cray Research....
 launched by Cray Research in 1991. The C90 was a development of the Cray Y-MP
Cray Y-MP

The Cray Y-MP was a supercomputer sold by Cray from 1988, and the successor to the company's Cray X-MP. The Y-MP retained software compatibility with the X-MP, but extended the address registers from 24 to 32 bits....
 architecture. Compared to the Y-MP, the C90 processor had a dual vector pipeline and a faster (4.1 ns or 244 MHz) clock speed, which together gave three times the performance of the Y-MP processor. The maximum number of processors in a system was also doubled from eight to 16.






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Encyclopedia


The Cray C90 series (initially named the Y-MP C90) was a vector processor
Vector processor

A vector processor, or array processor, is a Central processing unit design where the instruction set includes operations that can perform mathematical operations on multiple data elements simultaneously....
 supercomputer
Supercomputer

A supercomputer is a computer that is at the frontline of current processing capacity, particularly speed of calculation. Supercomputers introduced in the 1960s were designed primarily by Seymour Cray at Control Data Corporation , and led the market into the 1970s until Cray left to form his own company, Cray Research....
 launched by Cray Research in 1991. The C90 was a development of the Cray Y-MP
Cray Y-MP

The Cray Y-MP was a supercomputer sold by Cray from 1988, and the successor to the company's Cray X-MP. The Y-MP retained software compatibility with the X-MP, but extended the address registers from 24 to 32 bits....
 architecture. Compared to the Y-MP, the C90 processor had a dual vector pipeline and a faster (4.1 ns or 244 MHz) clock speed, which together gave three times the performance of the Y-MP processor. The maximum number of processors in a system was also doubled from eight to 16. The C90 series used the same Model E IOS (Input/Output Subsystem) and UNICOS
Unicos

UNICOS is the name of a range of Unix-like operating system variants developed by Cray Inc. for its supercomputers. UNICOS is the successor of the Cray Operating System ....
 operating system
Operating system

An operating system is an interface between hardware and applications; it is responsible for the management and coordination of activities and the sharing of the limited resources of the computer....
 as the earlier Y-MP Model E.

The C90 series included the C94, C98 and C916 models (configurations with a maximum of four, eight, and 16 processor respectively) and the C92A and C94A (air-cooled models). Maximum SRAM memory was between 1 and 8 GB, depending on model.

The D92, D92A, D94 and D98 (also known as the C92D, C92AD, C94D and C98D respectively) variants were equipped with slower, but higher-density DRAM
Dram

Dram or DRAM may refer to:* Dram , an imperial unit of mass and volume* Armenian dram, a monetary unit* Dynamic random access memory* Database of Recorded American Music...
 memory, allowing increased maximum memory sizes of up to 16 GB, depending on the model.

The successor system was the Cray T90
Cray T90

The Cray T90 series was the last of a line of vector processing supercomputers manufactured by Cray Research, Inc, superseding the Cray C90 series....
.

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