Jaume Vidal Alcover, la humanitat del poeta

Abstract not availabl

Instruments de percussió (Mallorca)

Abstract not availabl

¿Reconversión o desregulación? análisis de planes de reconversión turístico-inmo- biliaria de la playa de Palma (Mallorca)

In today’s globalized world, neoliberal capitalism relativizes the State’s role through privatization and de-regulation. In this context, the tourist sector real estate business attracts financial investment, transforming areas into authentic cities through the «flexibilization» of space. The restructuring process of decadent Fordist tourist resorts highlights the public authority tug of war between benefitting private interests and promoting democratic control, concealing processes where deregulation prevails. As a case study, different recent restructuring plans and regulations relating to Playa de Palma are used.El capitalismo neoliberal en la globalización relativiza el papel del Estado, mediante privatizaciones y desregulación. En este contexto, el negocio turístico-inmobiliario atrae inversiones financieras y produce ciudad en la «flexibilización» del espacio. La reconversión de enclaves turísticos fordistas decadentes muestra las tensiones de los poderes públicos entre favorecer intereses privados y promover su control democrático, imbuidos por procesos dominados por la desregulación. Se utilizan los casos de diversos planes de reconversión y normativas recientes que afectan a la Playa de Palma

MPI+X: task-based parallelization and dynamic load balance of finite element assembly

The main computing tasks of a finite element code(FE) for solving partial differential equations (PDE's) are the algebraic system assembly and the iterative solver. This work focuses on the first task, in the context of a hybrid MPI+X paradigm. Although we will describe algorithms in the FE context, a similar strategy can be straightforwardly applied to other discretization methods, like the finite volume method. The matrix assembly consists of a loop over the elements of the MPI partition to compute element matrices and right-hand sides and their assemblies in the local system to each MPI partition. In a MPI+X hybrid parallelism context, X has consisted traditionally of loop parallelism using OpenMP. Several strategies have been proposed in the literature to implement this loop parallelism, like coloring or substructuring techniques to circumvent the race condition that appears when assembling the element system into the local system. The main drawback of the first technique is the decrease of the IPC due to bad spatial locality. The second technique avoids this issue but requires extensive changes in the implementation, which can be cumbersome when several element loops should be treated. We propose an alternative, based on the task parallelism of the element loop using some extensions to the OpenMP programming model. The taskification of the assembly solves both aforementioned problems. In addition, dynamic load balance will be applied using the DLB library, especially efficient in the presence of hybrid meshes, where the relative costs of the different elements is impossible to estimate a priori. This paper presents the proposed methodology, its implementation and its validation through the solution of large computational mechanics problems up to 16k cores