Quad-core processor system built in quad-core structure and data switching method thereof

Abstract

The invention provides a quad-core processor system built in a quad-core structure and a data switching method thereof. The system processing data in a single-program-segment multi-data manner comprises four microprocessor cores; each microprocessor core comprises an instruction memory, an intra-core data memory, and a central processing unit; the instruction memory is used for storing an instruction; the intra-core data memory is used for storing data; the central processing unit is used for executing corresponding operations according to input instructions and data and updating a register file in the central processing unit and an external data memory. Execution efficiency of an algorithm is improved by making use of parallelism in the algorithm; in addition, inter-core data paths are established in a quad-core processor by two data switching manners, namely sharing a register and setting multiple layers of buses between the microprocessor cores and the external data memory, the performance of the quad-core processor in parallel data processing is improved, and data switching efficiency is improved.

Description

technical field [0001] The invention relates to a quad-core processor system built by adopting a quad-core structure and a data exchange method. Background technique [0002] Quad-core processors are also known as on-chip multiprocessors, or single-chip multiprocessors. This design idea was first proposed by Stanford University in 1996, which improves the performance of the processor by integrating multiple cores in a single chip. The structure of each processing core of a quad-core processor is relatively simple. Taking advantage of the number of cores, it can execute threads or tasks several times that of a single-core processor at the same time, which greatly improves the parallel performance of the processor. At the same time, by using the shared resources on the chip, the communication rate is effectively improved and the power consumption is reduced. These characteristics make quad-core processors have great advantages. [0003] Quad-core technology represents an in...

AI Technical Summary

Problems solved by technology

The problem of isomorphic design is: as the number of cores continues to increase, how to keep the data of each core consistent; how to meet the storage access and input / output access requirements of the core; Lower processors; how to balance the load and task coordination of several processors, etc.

[0018] Although multiple cores on a quad-core chip each execute their own code, data sharing and synchronization between different cores may be required, so the performance of the on-chip communication structure will directly affect the performance of the processor

[0024] A bottleneck of traditional uniprocessors is that as the frequency increases, the power consumption becomes higher and higher, which eventually makes the chip unable to operate normally.

In the early quad-core processor design, the power consumption of the processor was mainly reduced by reducing the core frequency, but this limited the computing performance of the core, and did not fundamentally achieve the purpose of high performance and low power consumption.

Excessive power consumption not only leads to energy consumption, but also heat accumulation and excessive power density can affect system stability

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