By Ben Abadallah Abderazek
ISBN-10: 9078677228
ISBN-13: 9789078677222
Traditional on-chip verbal exchange layout more often than not use ad-hoc techniques that fail to fulfill the demanding situations posed by way of the next-generation MultiCore platforms on-chip (MCSoC) designs. those significant demanding situations contain wiring hold up, predictability, varied interconnection architectures, and tool dissipation. A Network-on-Chip (NoC) paradigm is rising because the resolution for the issues of interconnecting dozens of cores right into a unmarried procedure on-chip. besides the fact that, there are various difficulties linked to the layout of such platforms. those difficulties come up from non-scalable worldwide cord delays, failure to accomplish worldwide synchronization, and problems linked to non-scalable bus-based useful interconnects.
The publication involves 3 elements, with every one half being subdivided into 4 chapters. the 1st half bargains with layout and method concerns. The architectures utilized in traditional equipment of MCSoCs layout and customized multiprocessor architectures are usually not versatile adequate to fulfill the necessities of alternative program domain names and never scalable sufficient to fulfill varied computation wishes and various complexities of assorted purposes. a number of chapters of the 1st half will emphasize at the layout innovations and methodologies.
the second one half covers the main serious a part of MCSoCs layout the interconnections. One method of addressing the layout methodologies is to undertake the so-called reusability characteristic to spice up layout productiveness. some time past years, the primitive layout devices developed from transistors to gates, finite country machines, and processor cores. The network-on-chip paradigm bargains this beautiful estate for the long run and may be ready to shut the productiveness hole.
The final a part of this publication delves into MCSoCs validations and optimizations. A extra qualitative process of approach validation relies at the use of formal suggestions for layout. the most benefit of formal tools is the chance to turn out the validity of crucial layout specifications. As formal languages have a mathematical beginning, it really is attainable to officially extract and determine those wanted houses of the total summary kingdom house. on-line checking out concepts for deciding on faults which could result in procedure failure also are surveyed. Emphasis is given to analytical redundancy-based thoughts which have been constructed for fault detection and isolation within the computerized keep an eye on zone
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Extra info for Multicore Systems-on-chip: Practical Hardware/Software Design Issues
Example text
Therefore, a combination can be used in which only the most frequently changing LSB bits use a Gray code. 3 Data guarding Switching activity is the major cause of energy dissipation in most CMOS digital systems. Therefore, to reduce power consumption, switching activities that do not contribute to the actual communication and computation should be eliminated. The basic idea is to identify logical conditions at some inputs to a logic circuit that is invariant to the output. Since those input values do not affect the output, the input transitions can be disabled.
Chapter 2 Design for Low Power Systems Power dissipation continues to be a primary design constraint in single and multicore systems. Increasing power consumption not only results in increasing energy costs, but also results in high die temperatures that affect chip reliability, performance, and packaging cost. Energy conservation has been largely considered in the hardware design in general and also in embedded multicore systems’ components, such as CPUs, disks, displays, memories, and so on. ).
Collisions should be eliminated as much as possible within the media access layer (MAC) layer, a sub layer of the data link layer, since they result in retransmissions. Retransmissions lead to unnecessary power consumption and to possibly unbounded delays. Retransmissions cannot be completely avoided in a wireless network due to the high error-rates. Similarly, it may not be possible to fully eliminate collisions in a wireless mobile network. This is partly due to user mobility and a constantly varying set of mobiles in a cell.
Multicore Systems-on-chip: Practical Hardware/Software Design Issues by Ben Abadallah Abderazek
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