Programming by multiset transformation
Communications of the ACM
Gamma and the Chemical Reaction Model: Fifteen Years After
WMP '00 Proceedings of the Workshop on Multiset Processing: Multiset Processing, Mathematical, Computer Science, and Molecular Computing Points of View
Grid Information Services for Distributed Resource Sharing
HPDC '01 Proceedings of the 10th IEEE International Symposium on High Performance Distributed Computing
The Grid 2: Blueprint for a New Computing Infrastructure
The Grid 2: Blueprint for a New Computing Infrastructure
Triana: A Graphical Web Service Composition and Execution Toolkit
ICWS '04 Proceedings of the IEEE International Conference on Web Services
A Novel Architecture for Realizing Grid Workflow using Tuple Spaces
GRID '04 Proceedings of the 5th IEEE/ACM International Workshop on Grid Computing
Specification of grid workflow applications with AGWL: an Abstract Grid Workflow Language
CCGRID '05 Proceedings of the Fifth IEEE International Symposium on Cluster Computing and the Grid (CCGrid'05) - Volume 2 - Volume 02
Service Orchestration Using the Chemical Metaphor
SEUS '08 Proceedings of the 6th IFIP WG 10.2 international workshop on Software Technologies for Embedded and Ubiquitous Systems
The Chemical Reaction Model Recent Developments and Prospects
Software-Intensive Systems and New Computing Paradigms
Distributed workflow coordination: molecules and reactions
IPDPS'06 Proceedings of the 20th international conference on Parallel and distributed processing
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Executing workflows on large-scale heterogeneous distributed computing systems is a challenging task. Albeit there have been many well elaborated approaches, they are often motivated by a certain class of applications and focus on some implementation specific problems. The work presented in this paper aimed at establishing a highly abstract coordination model for distributed work- flow enactment where decentralized control, autonomy, adaptation to high dynamics and partial lack of information are of primary concerns. The model is based on a nature metaphor and envisioned as a chemical reaction where molecules react autonomously according to local and actual conditions. The execution model of such chemical workflow enactment is formalized using the ã-calculus. In the ã-calculus control, scheduling, dependencies, errors and the state of the computation are all represented in a single uniform declarative formalism that has a mathematically founded clear semantics. The paper shows that the abstract coordination model expressed in ã-calculus is able to grasp all aspects of such a chemical enactment, provides a more complex and adaptive framework than most current approaches, and actual realizations may be founded on it.