]>
The repository administrator has not yet configured an RDF license.
INVE_MEM_2008_60116.pdf
indexcodes.txt
lightbox.jpg
preview.jpg
medium.jpg
small.jpg
text/html
HTML Summary of #4376
Efficient Set Sharing Using ZBDDs
Efficient Set Sharing Using ZBDDs (PDF)
Efficient Set Sharing Using ZBDDs (Other)
Efficient Set Sharing Using ZBDDs (Other)
Efficient Set Sharing Using ZBDDs (Other)
Efficient Set Sharing Using ZBDDs (Other)
Efficient Set Sharing Using ZBDDs (Other)
Set sharing is an abstract domain in which each concrete object is represented by the set of local variables from which it might be reachable. It is a useful abstraction to detect parallelism opportunities, since it contains definite information about which variables do not share in memory, i.e., about when the memory regions reachable from those variables are disjoint. Set sharing is a more precise alternative to pair sharing, in which each domain element is a set of all pairs of local variables from which a common object may be reachable. However, the exponential complexity of some set sharing operations has limited its wider application. This work introduces an efficient implementation of the set sharing domain using Zero-suppressed Binary Decision Diagrams (ZBDDs). Because ZBDDs were designed to represent sets of combinations (i.e., sets of sets), they naturally represent elements of the set sharing domain. We show how to synthesize the operations needed in the set sharing transfer functions from basic ZBDD operations. For some of the operations, we devise custom ZBDD algorithms that perform better in practice. We also compare our implementation of the abstract domain with an efficient, compact, bit set-based alternative, and show that the ZBDD version scales better in terms of both memory usage and running time.
2008
Efficient Set Sharing Using ZBDDs
Computer Science
Informática
Telecommunications
Telecomunicaciones
21th international workshop, Languages and compilers for parallel computing, LCPC 2008
Edmonton, Alberta, Canadá
Springer
Hermenegildo
Manuel V.
Manuel V. Hermenegildo
Lhoták
Ondrej
Ondrej Lhoták
Méndez-Lojo
Mario
Mario Méndez-Lojo