Constraints-driven scheduling and resource assignment
Författare
Summary, in English
This paper describes a new method for modeling and solving different scheduling and resource assignment problems that are common in high-level synthesis (HLS) and system-level synthesis. It addresses assignment of resources for operations and tasks as well as their static, off-line scheduling. Different heterogeneous constraints are considered for these problems. These constraints can be grouped into two classes: problem-specific constraints and design-oriented constraints. They are uniformly modeled, in our approach, by finite domain (FD) constraints and solved using related constrained programming (CP) techniques. This provides a way to improve quality of final solutions. We have developed in Java a constraint solver engine, JaCoP ( Java Constraint Programming), to evaluate this approach. This solver and a related framework make it possible to model different resource assignment and scheduling problems, and handle them uniformly. The JaCoP prototype system has been extensively evaluated on a number of HLS and system-level synthesis benchmarks. We have been able to obtain optimal results together with related proofs of optimality for all HLS scheduling benchmarks and for all explored design styles ( except one functional pipeline design). Many system-level benchmarks can also be solved optimally. For large randomly generated task graphs, we have used heuristic search methods and obtained results that are 1 - 3% worse than lower bounds or optimal results. These experiments have proved the feasibility of the presented approach.
Avdelning/ar
Publiceringsår
2003
Språk
Engelska
Sidor
355-383
Publikation/Tidskrift/Serie
ACM Transactions on Design Automation of Electronic Systems
Volym
8
Issue
3
Dokumenttyp
Artikel i tidskrift
Förlag
Association for Computing Machinery (ACM)
Ämne
- Computer Science
Nyckelord
- resource assignment
- high-level synthesis
- constraint programming
- design
- experimentation
- scheduling
- system-level synthesis
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1084-4309