Tetsuya Sato, Hitoshi Murai (auth.), Amos Omondi, Stanislav's Advances in Computer Systems Architecture: 8th Asia-Pacific PDF

By Tetsuya Sato, Hitoshi Murai (auth.), Amos Omondi, Stanislav Sedukhin (eds.)

ISBN-10: 354020122X

ISBN-13: 9783540201229

ISBN-10: 3540398643

ISBN-13: 9783540398646

This convention marked the ?rst time that the Asia-Paci?c desktops structure convention used to be held outdoors Australasia (i. e. Australia and New Zealand), and was once, we are hoping, the beginning of what's going to be a customary occasion. The convention begun in 1992 as a workshop for laptop architects in Australia and thus built right into a full-?edged convention overlaying Austra- sia. extra significant adjustments ended in the current convention. The ?rst used to be a transformation from “computer structure” to “computer platforms architecture”, a metamorphosis that famous the significance and shut dating to computing device arc- tecture of sure degrees of software program (e. g. working structures and compilers) and of alternative parts (e. g. desktop networks). the second one swap, which re?ected the expanding variety of papers being submitted from Asia, used to be the alternative of “Australasia” with “Asia-Paci?c”. This year’s occasion was once for this reason rather signi?cant, in that it marked the start of a very “Asia-Paci?c” convention. it's meant that during the long run the convention venue will exchange among Asia and Australia/New Zealand and, even supposing nonetheless small, we are hoping that during time the convention will become an incredible person who represents Asia to an analogous - tent as latest significant computer-architecture meetings in North the US and Europe symbolize these regions.

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Extra resources for Advances in Computer Systems Architecture: 8th Asia-Pacific Conference, ACSAC 2003, Aizu-Wakamatsu, Japan, September 23-26, 2003. Proceedings

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Memory synchronisation will cause the consumer thread to wait in the register while the memory system awaits synchronisation with another context. Of course higher levels of concurrency may require software scheduling mechanisms and the full state of the registers must be saved in this situation. The LCQ state can also be used to trigger software context switches, instead of having the pipeline idle. The justification for using registers as synchronisers for micro threads is to provide a very low-latency synchronisation mechanism within a single context and this model requires that all registers in the micro-architecture implement a modified i-structure [26].

Synchronisation between two threads uses a shared register on which i-read and istore operations can take place. g. $S1. g. e. register $D1 in the consumer thread is the same register as $S1 in the producer thread. To achieve this dependency tracking we use the dep field from the thread header, which specifies the dependency distance between producer and consumer in terms of the thread issue sequence. The D-base of the consumer thread must be set to the same value as the S-base of the consumer thread.

Each register implements a modified i-structure that is allocated in the empty state on resource allocation. It has two operations i-store and i-read. I-store updates a specified register with a value and sets the register to the full state. Normally only a single i-store operation is allowed on a given i-structure but this single write is not enforced, to allow the registers to be used in a conventional manner if required. The i-read operation either suspends the thread containing it, if the register is empty, or it returns the value stored.

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Advances in Computer Systems Architecture: 8th Asia-Pacific Conference, ACSAC 2003, Aizu-Wakamatsu, Japan, September 23-26, 2003. Proceedings by Tetsuya Sato, Hitoshi Murai (auth.), Amos Omondi, Stanislav Sedukhin (eds.)

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