Paper Info
Title
Inter-Cluster Communication Models for Clustered VLIW Processors
Abstract
Clustering is a well-known technique to improve the implementation of single register file VLIW processors. Many previous studies in clustering adhere to an inter-cluster communication means in the form of copy operations. This paper, however, identifies and evaluates fivedifferent inter-cluster communication models, including copy operations, dedicated issue slots, extended operands, extended results, and broadcasting. Our study reveals that these models have a major impact on performance and implementation of the clustered VLIW. We found that copy operations executed in regular VLIW issue slots significantly constrain the scheduling freedom of regular operations. For example, in the dense code for our four clustermachine the total cycle count overhead reached 46.8% with respect to the unicluster architecture, 56% of which are caused by the copy operation constraint. Therefore, we propose to use other models (e.g. extended results or broadcasting), which deliver higher performance than the copy operation model at the same hardware cost.
Year
DOI
Venue
2003
10.1109/HPCA.2003.1183552
HPCA
Keywords
Field
DocType
extended result,higher performance,dedicated issue slot,regular vliw issue slot,inter-cluster communication models,clustered vliw processors,copy operation,vliw processor,copy operation constraint,extended operands,fivedifferent inter-cluster communication model,copy operation model,register file,communication model
Broadcasting,Very long instruction word,Scheduling (computing),Computer science,Operand,Parallel computing,Cycle count,Register file,Real-time computing,Models of communication,Cluster analysis
Conference
ISSN
ISBN
Citations 
1530-0897
0-7695-1871-0
32
PageRank 
References 
Authors
1.48
14
7
Name
Order
Citations
PageRank
Andrei Terechko11338.64
Erwan Le Thenaff2321.48
Manish Garg3524.22
Jos van Eijndhoven4321.48
Henk Corporaal51787166.20
Le Thenaff, E.6321.48
van Eijndhoven, J.7351.92