Distributed quality-attribute optimization of software architectures

DÍAZ PACE, J. ANDRÉS; VIDAL, SANTIAGO A.; VAN HOORN, ANDRÉ; RAGO, ALEJANDRO; FRANK, SEBASTIAN

Fortaleza

Simposio; 11th Brazilian Symposium on Software Components, Architectures, and Reuse (SBCARS 2017); 2017

Sociedad Brasilera de Computación

A key challenge of software architecture design is how to satisfy quality-attribute requirements, which often con ict with each other. This is usually a complex task, because there are several candidates for architectural solutions meeting the same requirements, and quality-attribute tradeo s of those solutions need to be considered by the architects. In this context, we present the SQuAT framework to assist architects in the exploration of design solutions and their tradeo s. This framework provides a modular approach for inte- grating quality-attribute analyzers and solvers, and also features a distributed search-based optimization. In this paper, we report on an experience using SQuAT with Palladio architectural models, which integrates third-party tools for performance and modi ability, and shows the tradeo s among candidate solutions to the architect. Fur- thermore, we enhance the standard search schema of SQuAT with a distributed negotiation technique based on monotonic conces- sion, in order to provide better tradeo s for the architect?s decision making.