An-Najah National University

Raed Alqadi

Blog about my Academic Experience

 
  • Wednesday, February 18, 2009
  • Analysis of Resource Lower Bounds in Real-Time Applications
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    Tasks in a real-time application usually have several stringent timing, resource, and communication requirements. Designing a distributed computing system which can meet all these requirements is a challenging problem. In this paper, we alleviate this problem by proposing a technique to determine a lower bound on the number of processors and resources required to meet the constraints of the application. We also extend the technique to estimate the cost of a system which meets all the application constraints. The proposed technique deals with most constraints found in real-time applications including deadlines, release times, resource requirements, precedence relationships, and non-zero communication times. It also derives these bounds for two different models of distributed systems.
     
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  • Wednesday, February 18, 2009
  • Distributed Synthesis of Real-Time Computer Systems
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    High-level synthesis has become commonplace in many areas of computing such as VLSI design and digital signal processing. However, it is just beginning to receive attention in the area of real-time systems. Given a real-time application and a design library of components, high-level synthesis involves three main steps: (i) estimation of processors and resources required to meet the constraints of the application, (ii) identifying suitable architectures using the components from the design library, and (iii) scheduling application tasks on the selected architecture. In this paper, we focus on the first and the third steps of this process. Specifically, we identify key issues in parallelizing these two steps. We then discuss approaches to deal with these issues and present results of our distributed implementation. The results of this implementation on a network of workstations show that considerable speedup in overall runtimes can be achieved by using multiple workstations.
     
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PROFILE

Raed Adel Hasan Alqadi
Computer Engineering
 
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