Lifetime-sensitive modulo scheduling in a production environment

Author

Llosa, Josep ; Ayguadé, Eduard ; Gonzalez, Antonio ; Valero, Mateo ; Eckhardt, Jason

Author_Institution

Dept. of Comput. Archit., Catalonia Univ., Barcelona, Spain

Volume

50

Issue

3

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

234

Lastpage

249

Abstract

This paper presents a novel software pipelining approach, which is called Swing Modulo Scheduling (SMS). It generates schedules that are near optimal in terms of initiation interval, register requirements, and stage count. Swing Modulo Scheduling is a heuristic approach that has a low computational cost. This paper first describes the technique and evaluates it for the Perfect Club benchmark suite on a generic VLIW architecture. SMS is compared with other heuristic methods, showing that it outperforms them in terms of the quality of the obtained schedules and compilation time. To further explore the effectiveness of SMS, the experience of incorporating it into a production quality compiler for the Equator MAP1000 processor is described; implementation issues are discussed, as well as modifications and improvements to the original algorithm. Finally, experimental results from using a set of industrial multimedia applications are presented

Keywords

parallel programming; pipeline processing; processor scheduling; program compilers; Swing Modulo Scheduling; fine grain parallelism; heuristic methods; initiation interval; instruction scheduling; loop scheduling; production quality compiler; register requirements; software pipelining; stage count; superscalar architectures; Computer architecture; Job shop scheduling; Pipeline processing; Processor scheduling; Production; Proposals; Registers; Scheduling algorithm; Throughput; VLIW;

fLanguage

English

Journal_Title

Computers, IEEE Transactions on

Publisher

ieee

ISSN

0018-9340

Type

jour

DOI

10.1109/12.910814

Filename

910814