RC 21665 (97500) 16 December 1999 Computer Science

This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g. , payment of royalties). Copies may be requested from IBM T. J. Watson Research Center , P. O. Box 218, Yorktown Heights, NY 10598 USA (email: [email protected]). Some reports are available on the internet at http://domino.watson.ibm.com/library/CyberDig.nsf/homeAbstract frequencydqu gnand instruction-level parallelism (ILP) are two keys to high performance microprocessor implementation. To achieve these sometimes competing goals, the Binary-translation Optimized Architecture (BOA) aims to bring cod translation techniquesbased on continuous profiling into the mainstream. Initially, cod is interpreted todkWk3 cod hot spotsand gather profile information to guid ed ynamic optimizations. To achieve compatibility with the established architecture, a binary translation layer translates PowerPC instructions into simple VLIW operation primitives. These primitives are thenschedk ed using VLIW schedk ing techniques to a variable length, six issue VLIW/EPIC processor. Binary translation eliminates the binary compatibility problem faced by other processors, whiledPzF ic recompilation enablesadH3P ve re-optimization of critical program cod sectionsand eliminates theneed ford ynamicsched3 inghard ar

Method Engineering Approach for Interoperable Systems Development

Software integration and interoperability of systems are becoming one of the primary subjects of business managers. Interoperability problems have been a specific problem of technical managers but the globalisation and the IT era have upgraded the problem to the business domain. Managers are conscious that this new era forces them to reuse functionalities and avoid new developments. However, in the cases where they need a new development they need to architect the foreseen solution with capabilities to add new integrations and new functionalities with the existing ones. Service-oriented architectures (SOAs) are deployed in a wide variety of organisations and it allows interoperability among stakeholders in order to improve their value chain and to provide better services to a wider range of customers. The evolution of technologies implies not only the adoption of new technologies or changes in these technologies but also in the organisation's culture, society and the emergence of new businesses. This evolution cannot be supported with the existing life cycles and tools. They need a methodological support and a development of appropriate tools. In this article, we present a specific method engineering approach for the construction of interoperable systems based on MDA and SOA paradigms.Peer reviewe