alpha

RISC instruction set microprocessor developed by DEC

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synonym DEC Alpha (Microprocessor) generally refers to alpha (RISC instruction set microprocessor developed by DEC)

Alpha is launched by DEC RISC Instruction set system. The CPU based on alpha instruction set is also called Alpha AXP architecture. It is 64 bit RISC of microprocessor , originally manufactured by DEC and used for DEC's own workstation and The server Medium. As a follow-up development of VAX, it supports VMS operating systems, such as Digital UNIX 。 Alpha instruction set and MIPS The instruction set comes from the same door and is very similar, but it was introduced later than MIPS, and some new features were added, such as Conditional branch instruction Etc.^[1]

Chinese name: DEC Alpha

Foreign name: DEC Alpha
Type: 64 bit RISC microprocessor

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one brief introduction
two Development history

brief introduction

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DEC Alpha， Also known as Alpha AXP, it is a 64 bit RISC microprocessor, originally manufactured by DEC Corporation and used in DEC's own workstations and servers. As a follow-up development of VAX, it supports VMS operating systems, such as Digital UNIX. Soon Open Source The operating system of can also run on it, such as Linux and BSD 。 Microsoft until Windows NT 4.0 SP6 supports this processor from Windows 2000 Beta 3 began to give up support for alpha architecture.^[2]

Development history

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In 1998, DEC was sold together compaq 。 In 2001, it was sold by Compaq Intel 。 In the same year, HP Acquired Compaq and continued to develop products based on Alpha processor until 2004.^[2]

In 2011, it was deployed in National Supercomputing Center Jinan Of Shenwei Blu ray Supercomputer Exposed, which is said to be intellectual property right Shenwei Blu ray SW-1600 processor 。 According to network data, Shenwei Blu ray processor is based on patent The expired DEC ALPHA 21164A EV-56 architecture integrates 16 cores in a single CPU, Dominant frequency 975MHz to 1.2GHz, floating-point Peak performance of digital computing 140.8GFlops@1.1GHz , integrated DDR3 Memory controller And supports 16GB Memory 。^[2]

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