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Data processing system

A data processing system and processor technology, applied in the direction of electrical digital data processing, data processing input/output process, memory system, etc., can solve the problem of reading task stop and so on

Inactive Publication Date: 2007-04-18
ENTROPIC COMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A read from a channel that does not have enough data available will cause the read task to stall

Method used

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Embodiment Construction

[0025] Figure 2 shows a processing system according to the invention. The system comprises memory 10 , several processors 11 a , 11 b , 11 c and an arbiter 16 . Each of the processors 11a-c comprises a calculation unit 12a, 12b, 12c and a management unit 18a, 18b, 18c. The processors 11a, 11b, 11c are shown by way of example, in practice any number of processors may be used. Processors 11 a - c are connected to memory 10 via address bus 14 and data bus 13 . The processors 11a-c are connected to an arbiter 16, which are connected to each other by a synchronous channel comprising management units 18a-c, which are connected to each other by a communication network 19, such as a token ring.

[0026] Preferably, the processors 11a-c are special purpose processors; each dedicated to efficiently performing a limited range of stream processing tasks. That is, each processor is arranged to repeatedly apply the same processing operation to successive data objects received via the dat...

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Abstract

A multiprocessor data processing system is described wherein the processor ( 12 a , 12 b , 12 c) communicate to each other via a shared memory ( 10 ). Each of the processors comprises an administration unit ( 18 a) and a computational unit ( 12 a). The administration unit of a writing processor ( 11 a) maintains information defining a section in the memory ( 10 ) which is free for storing data objects for readout by the reading processor ( 12 b). The administration unit ( 18 b) of the reading processor ( 11 b) maintains information defining a section in the memory ( 10 ) in which the writing processor has written completed data for the data objects. The processors are arranged to signal a message (M, M') to another processor via a processor synchronization channel for updating the information in the administration unit of said other processor. Each of the processors is arranged to suspend processing the stream of data objects when a location which it needs to access is outside the section defined by its administration unit.

Description

technical field [0001] The present invention relates to data processing systems having multiple processors. Background technique [0002] Heterogeneous multiprocessor architectures for high-performance, data-dependent media processing, such as for high-definition MPEG decoding, are known. A media processing application can be specified as a set of parallel-executing tasks that exchange information only through a unidirectional data flow. A formal model of this application has been introduced by G..Kahn in 1974, "The Semantics of a Simple Language for Parallel Programming", Proceedings of the 74th IFIP Conference, Aug. 5-10, Stockholm, Sweden, North-Holland publ.Co. 1974, pp. 471-475, followed in 1977 by Kahn and MacQueen operationally in the following article, "Co-routines and Networks of Parallel Programming", (Coroutines and Networks for Parallel Programming) Information Processing 77, B Gilchhirst (ED.), North-Holland publ. Co. 1974, pp. 993-998. This formal model is n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/46G06F15/17G06F3/00G06F9/00G06F12/00G06T1/20
CPCG06F9/544
Inventor J·T·J·范埃德霍文E·J·波M·J·鲁特坦
Owner ENTROPIC COMM INC
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