Digital recording of performing arts: formats and conversion

B

Design and Analysis of a Task-based Parallelization over a Runtime System of an Explicit Finite-Volume CFD Code with Adaptive Time Stepping

FLUSEPA (Registered trademark in France No. 134009261) is an advanced simulation tool which performs a large panel of aerodynamic studies. It is the unstructured finite-volume solver developed by Airbus Safran Launchers company to calculate compressible, multidimensional, unsteady, viscous and reactive flows around bodies in relative motion. The time integration in FLUSEPA is done using an explicit temporal adaptive method. The current production version of the code is based on MPI and OpenMP. This implementation leads to important synchronizations that must be reduced. To tackle this problem, we present the study of a task-based parallelization of the aerodynamic solver of FLUSEPA using the runtime system StarPU and combining up to three levels of parallelism. We validate our solution by the simulation (using a finite-volume mesh with 80 million cells) of a take-off blast wave propagation for Ariane 5 launcher.Comment: Accepted manuscript of a paper in Journal of Computational Scienc

A new land cover map for the Mekong: Southeast Asia’s largest transboundary river basin

The transboundary Mekong basin, including territorial parts of China, Myanmar, Laos, Thailand, Cambodia, and Vietnam, is endowed with a rich natural resource base. The rapid socio-economic development of the region, however, substantially increases pressure on its natural resources that are increasingly subject of over-exploitation and environmental degradation. Some of the main environmental problems facing the region are common or transboundary issues that only can be addressed by transboundary approaches based on consistent and regional comparable information on the state of the environment at basin scale. In this context, a regional specific land cover map, the MEKONG LC2010 product, was produced for the entire Mekong Basin, utilising information from the MODIS sensor aboard the platforms Aqua and Terra