Infrastructure-agnostic programming and interoperable execution in heterogeneous grids

In distributed environments, no matter the type of infrastructure (cluster, grid, cloud), portability of applications and interoperability are always a major concern. Such infrastructures have a high variety of characteristics, which brings a need for systems that abstract the application from the particular details of each infrastructure. In addition, managing parallelisation and distribution also complicates the work of the programmer. In that sense, this paper demonstrates how an c-Scicnce application can be easily developed with the COMPSs programming model and then parallelised in heterogeneous grids with the COMPSs runtime. With COMPSs, programs are developed in a totally-sequential way, while the user is only responsible for specifying their tasks, i.e. computations to be spawned asynchronously to the available resources. The COMPSs runtime deals with parallelisa-tion and infrastructure management, so that the application is portable and agnostic of the underlying infrastructure.This work has been supported by the following institutions: the Universitat Politècnica de Catalunya with a UPC Recerca predoctoral grant; the projects of Computación de Altas Prestaciones V and VI (TIN2007-60625, TIN2012-34557); the Spanish Government with grant SEV-2011-00067 of Severo Ochoa Program. On the other hand, the Ibergrid and the Open Science Grid organisations have granted us access to their infrastructures.Peer Reviewe