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DOI: 10.14569/IJACSA.2015.060406
PDF

Predictable CPU Architecture Designed for Small Real-Time Application - Concept and Theory of Operation

Author 1: Nicoleta Cristina GAITAN
Author 2: Ionel ZAGAN
Author 3: Vasile Gheorghita GAITAN

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 6 Issue 4, 2015.

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Abstract: The purpose of this paper is to describe an predictable CPU architecture, based on the five stage pipeline assembly line and a hardware scheduler engine. We aim at developing a fine-grained multithreading implementation, named nMPRA-MT. The new proposed architecture uses replication and remapping techniques for the program counter, the register file, and the pipeline registers and is implemented with a FPGA device. An original implementation of a MIPS processor with thread interleaved pipeline is obtained, using dynamic scheduling of hard real-time tasks and interrupts. In terms of interrupts handling, the architecture uses a particular method consisting of assigning interrupts to tasks, which insures an efficient control for both the context switch, and the system real-time behavior. The originality of the approach resides in the predictability and spatial isolation of the hard real-time tasks, executed every two clock cycles. The nMPRA-MT architecture is enabled by an innovative scheme of predictable scheduling algorithm, without stalling the pipeline assembly line.

Keywords: fine-grained multithreading; hardware scheduler; pipeline; hard real-time; predictable

Nicoleta Cristina GAITAN, Ionel ZAGAN and Vasile Gheorghita GAITAN, “Predictable CPU Architecture Designed for Small Real-Time Application - Concept and Theory of Operation” International Journal of Advanced Computer Science and Applications(IJACSA), 6(4), 2015. http://dx.doi.org/10.14569/IJACSA.2015.060406

@article{GAITAN2015,
title = {Predictable CPU Architecture Designed for Small Real-Time Application - Concept and Theory of Operation},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2015.060406},
url = {http://dx.doi.org/10.14569/IJACSA.2015.060406},
year = {2015},
publisher = {The Science and Information Organization},
volume = {6},
number = {4},
author = {Nicoleta Cristina GAITAN and Ionel ZAGAN and Vasile Gheorghita GAITAN}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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