A low cost split-issue technique to improve performance of SMT clustered VLIW processors
Visualitza/Obre
Cita com:
hdl:2117/15888
Tipus de documentText en actes de congrés
Data publicació2010
Condicions d'accésAccés obert
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
Abstract—Very Long Instruction Word (VLIW) processors are a popular choice in embedded domain due to their hardware simplicity, low cost and low power consumption. Simultaneous MultiThreading (SMT) is a popular technique
for improving processor performance. To maintain execution semantics, a VLIW instruction needs to be issued in entirety,
which restricts the opportunities in SMT. Split-issue at operation-level is a technique that allows issuing a VLIW
instruction in parts without breaking execution semantics. Issuing an instruction in parts allows non-conflicting part
of an instruction to be issued along with other instructions and improves SMT performance. However, implementing splitissue
at operation-level requires complex structures and is not practical for an embedded VLIW processor. This paper proposes cluster-level split-issue, which implements split-issue at a cluster-level boundary for clustered VLIW processors. Cluster-level split-issue has a very low hardware overhead in contrast to split-issue at operation-level. Experimental results show that cluster-level split-issue, despite being more restrictive than split-issue at operation-level, achieves similar performance
and improves SMT performance significantly.
CitacióGupta, M.; Sanchez, F.; Llosa, J. A low cost split-issue technique to improve performance of SMT clustered VLIW processors. A: IEEE International Parallel and Distributed Processing Symposium. "Proceedings of the IEEE International Symposium on Parallel & Distributed Processing 2010". Atlanta: 2010, p. 1-12.
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
IPDPS-paper.pdf | Article principal | 291,4Kb | Visualitza/Obre |