Our goal within ICENI is to provide high-level abstractions for e-science (scientific computing) which will allow users to construct and define their own applications through a graphical composition tool integrated with distributed component repositories and to deliver this environment across a range of platforms and devices. The distributed component repositories will allow developers to contribute their software to the wider community and easily incorporate other work into their own components or applications. The ICENI middleware federates the underlying resources that enable the e-scientist to carry out their work by allowing sophisticated and extensible access and usage policies to be specified.

Our target architectures are the emerging Computational Grids which are starting to dominate the provision of high performance and scientific computing. The efficient exploitation of these physically distributed computational, storage, software and instrument resources connected by wide area networks is only possible through effective data partitioning and communication patterns. The use of performance models allows the optimal implementation and data partition to be determined by sophisticated scheduling algorithms. Numerical efficiency will be maintained through dynamic cross-component optimisations such as lazy libraries and delayed evaluation.

The emerging computational grids provide considerable challenges in the optimal exploitation of distributed computational, software, networking and storage resource. These resources will be owned by different organisations which are cooperating to build a computational community. Within these federated resources an individual organisation's access control and usage policies must be respected and enforced.

This architecture is being implemented in Java and Jini, but is able to interoperate with the Open Grid Services Architecture.

Further information can be obtained from the links below.

• Papers presented at the UK e-Science All Hands Meeting in September 2004.
• Papers and posters presented at the UK e-Science All Hands Meeting in September 2003.
• Presentation of the ICENI middleware at the conference Java One in June 2003. This presentation is also available in HTML format, and was followed by a demonstration of ICENI.
• Presentation of the ICENI middleware at the UK e-Science All Hands Meeting in September 2002. This presentation is also available in HTML format (best view with Microsoft Internet Explorer).