YML/LAKe Web Portal: Web based research portal for linear algebra application

In the passed decades the development of the numerical libraries was a response to the needs in the field of high performance computing. With the advent of the GRID computing, it becomes necessary to adapt these libraries and or their subroutines as components and to integrate them in a global computing system. To allow the end-user to be concerned by its science activity and not by the implementation details of the tools used, the infrastructures complexity of the GRID must be hidden to him. Indeed, a GRID computing environment, proposing services such as numerical libraries, must offer a convivial web portal to the user. GRID portals can interact with underlying middleware using integrated workflow engines and with the components constituting a library relying integrated implementation catalogs. This paper presents a web based solution for scientific computation portals. The proposed portal example is based on the integration of LAKe, a component-oriented library in the YML workflow engine. YML is composed of several tools allowing workflow graph description adaptable to several middleware and LAKe is an object-oriented linear algebra class library. By using a representative numerical hybrid method we show the interest of our high-level application portal.