User-controllable coherence for high performance shared memory multiprocessors

Autor:	Collin McCurdy, Charles Fischer
Rok vydání:	2003
Předmět:	Computer Graphics and Computer-Aided Design Software
Zdroj:	ACM SIGPLAN Notices. 38:73-82
ISSN:	1558-1160 0362-1340
Popis:	In programming high performance applications, shared address-space platforms are preferable for fine-grained computation, while distributed address-space platforms are more suitable for coarse-grained computation. However, currently only distributed address-space systems scale beyond the low hundreds of processors. In this paper we introduce a hybrid architecture that allows users to trade off local memory usage for coherence communication, making possible larger-scale shared memory architectures. We introduce a programming model and examine possible implementations of hardware mechanisms, evaluating some of the trade-offs inherent in each. Preliminary experiments on an application with particularly fine-grained communication requirements indicate that effective placement of directives can reduce coherence communication by more than a factor of 10 for 64 processors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e5c679a29524e6e4cc41206402d00e2 https://doi.org/10.1145/966049.781507 Zobrazit plný text záznamu