Abstract
We study distributed state space generation on a cluster of workstations. It is explained why state space
partitioning by a global hash function is problematic when states contain variables from unbounded domains,
such as lists or other recursive datatypes. Our solution is to introduce a database which maintains a global
numbering of state values. We also describe tree-compression, a technique of recursive state folding, and
show that it is superior to manipulating plain state vectors.
This solution is implemented and linked to the μCRL toolset, where state values are implemented as
maximally shared terms (ATerms). However, it is applicable to other models as well, e.g., PROMELA
models via the NIPS virtual machine. Our experiments show the trade-offs between keeping the database
global, replicated, or local, depending on the available network bandwidth and latency.
Original language | English |
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Title of host publication | Proceedings of the 6th International Workshop on Parallel and Distributed Methods in verifiCation |
Subtitle of host publication | PDMC 2007, 8 July 2007, Berlin, Germany |
Editors | I. Černá, B.R. Haverkort |
Place of Publication | Amsterdam |
Publisher | Elsevier |
Pages | 17-32 |
Number of pages | 16 |
DOIs | |
Publication status | Published - 4 Mar 2008 |
Event | 6th International Workshop on Parallel and Distributed Methods in verifiCation, PDMC 2007 - Berlin, Germany Duration: 8 Jul 2007 → 8 Jul 2007 Conference number: 6 http://anna.fi.muni.cz/PDMC/PDMC07/ |
Publication series
Name | Electronic Notes in Theoretical Computer Science |
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Publisher | Elsevier |
Number | 1 |
Volume | 198 |
ISSN (Print) | 1571-0661 |
ISSN (Electronic) | 1571-0661 |
Workshop
Workshop | 6th International Workshop on Parallel and Distributed Methods in verifiCation, PDMC 2007 |
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Abbreviated title | PDMC |
Country/Territory | Germany |
City | Berlin |
Period | 8/07/07 → 8/07/07 |
Internet address |
Keywords
- FMT-TOOLS
- FMT-MC: MODEL CHECKING
- Tree compression
- μCRL
- State collapsing
- State space partitioning