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There has been a high concern regarding the energy saving on mobile devices recently, for mobile devices have been performing increasingly complex tasks over time. The computation offloading is one of the most popular techniques used by developers as an effective way of saving energy on mobile devices, which consists on executing complex tasks in external servers with different purposes including...
Models are useful to represent abstractions of software and hardware processes. The Bulk Synchronous Parallel (BSP) is a bridging model for parallel computation that allows algorithmic analysis of programs on parallel computers using performance modeling. The main idea of BSP model is the treatment of communication and computation as abstractions of a parallel system. Meanwhile, the use of GPU devices...
The use of GPU clusters for scientific applications in areas such as physics, chemistry and bioinformatics is becoming more widespread. These clusters frequently have different types of processing devices, such as CPUs and GPUs, which can themselves be heterogeneous. To use these devices in an efficient manner, it is crucial to find the right amount of work for each processor that balances the computational...
In recent years, service-oriented systems are becoming increasingly complex, with growing size and heterogeneity. Developing and deploying such large-scale systems present several challenges, such as reliability, reproducibility, handling failures on infrastructure, scaling deployment time as composition size grows, coordinating deployment among multiple organizations, dependency management, and supporting...
Cloud computing platforms have the potential to benefit scientific projects on all fields of knowledge. Its virtualized resources and large storage capacity enable any scientist to have access to high performance computing platforms at low costs. In this paper, we present the My Cloud project, a cloud computing infrastructure for the Technological University of Paraná campuses, in southern Brazil...
Multi-core compute nodes with non-uniform memory access (NUMA) are now a common architecture in the assembly of large-scale parallel machines. On these machines, in addition to the network communication costs, the memory access costs within a compute node are also asymmetric. Ignoring this can lead to an increase in the data movement costs. Therefore, to fully exploit the potential of these nodes...
We conduct a game theoretic analysis on the problem of scheduling jobs on computing platforms composed of several independent and selfish organizations, known as the Multi-Organization Scheduling Problem (MOSP). Each organization shares resources and jobs with others, expecting to decrease the makespan of its own jobs. We modeled MOSP as a non-cooperative game where each agent is responsible for assigning...
The goal of this paper is to study how limited cooperation can impact the quality of the schedule obtained by multiple independent organizations in a typical grid computing platform. This relaxed version of the problem known as the Multi-Organization Scheduling Problem (MOSP) models an environment where organizations providing both resources and jobs tolerate a bounded degradation on the make span...
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