Bounds modelling and compiler optimizations for superscalar performance tuning

Autor:	Sun-il Kim, Francis Patrick O'Connell, William A. Ciarfella, Pradip Bose
Rok vydání:	1999
Předmět:	Loop unrolling Floating point Hardware and Architecture Computer science Performance tuning Optimizing compiler Context (language use) Parallel computing Cache Loop performance Software Microarchitecture
Zdroj:	Journal of Systems Architecture. 45:1111-1137
ISSN:	1383-7621
DOI:	10.1016/s1383-7621(98)00053-8
Popis:	We consider the floating point microarchitecture support in RISC superscalar processors. We briefly review the fundamental performance trade-offs in the design of such microarchitecutres. We propose a simple, yet effective bounds model to deduce the “best-case” loop performance limits for these processors. We compare these bounds to simulated and real performance measurements. From this study, we identify several loop tuning opportunities. In particular, we illustrate the use of this analysis in suggesting loop unrolling and scheduling heuristics. We report our experimental results in the context of a set of application-based loop test cases. These are designed to stress various resource limits in the core (infinite cache) microarchitecture.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9f4fab6a64d65755f891c4f6edba830 https://doi.org/10.1016/s1383-7621(98)00053-8 Zobrazit plný text záznamu Full Text from ScienceDirect