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The memory subsystem for computer vision and image processing applications must sustain high memory bandwidth to keep processors busy. This paper advocates the use of stream descriptors, a mechanism that allows programmers to indicate data movement explicitly. Stream descriptors enable the compiler to organize memory transfers more efficiently by matching data movement to the capabilities of the underlying hardware. Stream descriptors are used in this paper on an image sensor interface to describe the deterministic movements of objects in segmented image regions. The paper shows how stream descriptors reduce the bandwidth requirements for a set of computer vision applications.

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Memory bandwidth optimization through stream descriptors

López-Lagunas, Abelardo; Chai, Sek M.
ACM SIGARCH Computer Architecture News , Volume 34 (1)
Association for Computing MachineryMar 1, 2006

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