24 research outputs found

    A Parallel Program Development Environment

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    This paper describes a programming environment aimed at developing and tuning message passing applications before actually running them in a real system with a large number of processors. Two basic tools in this environment are a simulator (Dimemas) and a visualization and analysis tool (Paraver) that are closely integrated. 1 Introduction Developing and tuning message passing programs is expensive both in programmer time and in hardware resources. Regarding development time there is still a lot of controversy on whether shared memory or distributed memory programming model is better. Even if shared memory is frequently presented as easier, it is also clear that there are commonalities in the shared and distributed memory approaches if performance on highly parallel machines is desired. Issues such as data distribution and minimization of communication have to be considered in both of them. Interestingly enough is the fact that the message passing programming model is very widely used..

    Haitian and Haitian American experiences of racism and socioethnic discrimination in Miami-Dade county: At-risk and court-involved youth

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    We examine how juvenile justice-involved youth of Haitian descent in Miami-Dade County cope with structural racism and its impact on their mental health. Drawing on longitudinal ethnography, psychosocial assessment data, and a family-based clinical intervention funded by the National Institute on Drug Abuse, this article explores youth narratives of discrimination prior to and during the COVID-19 pandemic. We use critical race theory and theory of practice to understand youths\u27 perceptions as racialized bodies and stigmatized selves, highlighting the experiences and perspectives of a particular black immigrant group, ethnic beings caught up in the everyday practices of racialization, sociocultural marginalization, and racism. We frame these experiences as a variation of the complex continuum of structural racism and racial domination in the US. These experiences have caused anger, fear, anxiety, chronic anticipatory distress, and hopelessness among youth of Haitian descent. We conclude with some recommendations for therapeutic support that encourages youth to process their experiences, promotes their development of a positive self-concept, and provides them with mind-body techniques to attenuate the physical impacts of discriminatory events. The clinical trial registration number for this study intervention is NCT03876171

    The internal brain drain: foreign aid, hiring practices, and international migration

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    Building on empirical material gathered in Haiti, this paper advances a new and innovative understanding of the internal brain drain phenomenon—the poaching of local skilled workers by international organisations (IOs) or international non-governmental organisations (INGOs)— by conceptualising it as an equilibrium. This equilibrium is composed of two sets of tensions: (i) those between the salary conditions in the public sector and those on offer to local personnel working for IOs and INGOs; and (ii) those inherent in the dual salary scale used by IOs and INGOs for local and international staff. These two sets of tensions contribute in their specific ways to international migration, and, as such, the internal brain drain has a bearing on external brain drain dynamics. In addition, the paper addresses the difficult policy choices facing development and humanitarian organisations, since every set of policies that impacts on one side of the equilibrium is bound to affect its other side.The project was funded primarily through the Research Fund of the University of Birmingham’s School of Government and Society, and in part by the Impact Acceleration Accounts scheme of the Economic and Social Research Council (ESRC)
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