Parallel Program Execution on a Heterogeneous PC Cluster Using Task Duplication
نویسنده
چکیده
—In this paper, we propose to use a duplication based approach in scheduling tasks to a heterogeneous cluster of PCs. In duplication based scheduling, critical tasks are redundantly scheduled to more than one machine in order to reduce the number of inter-task communication operations. The start times of the succeeding tasks are also reduced. The task duplication process is guided given the system heterogeneity in that the critical tasks are scheduled or replicated in faster machines. The algorithm has been implemented in our prototype program parallelization tool for generating MPI code executable on a cluster of Pentium PCs. Our experiments using three numerical applications have indicated that heterogeneity of PC cluster, being an inevitable feature, is indeed useful for optimizing the execution of parallel programs.
منابع مشابه
A New Duplication-Based Approach for Scheduling Tasks to a Heterogeneous Workstation Cluster
Triggered by the ever increasing advancements in processor and networking technology, a cluster of workstations and/or PCs connected by a high-speed network has become a viable and cost-effective platform for the execution of computation intensive parallel applications. However, realizing the goal of efficient cluster computing entails handling a number of resource management chores. In particu...
متن کاملAn Algorithm for Task Scheduling in Heterogeneous Distributed Systems Using Task Duplication
Task scheduling in heterogeneous parallel and distributed computing environment is a challenging problem. Applications identified by parallel tasks can be represented by directed-acyclic graphs (DAGs). Scheduling refers to the assignment of these parallel tasks on a set of bounded heterogeneous processors connected by high speed networks. Since task assignment is an NP-complete problem, instead...
متن کاملModified Genetic Algorithm Approach to Optimize Task Scheduling on Heterogeneous Multiprocessor Parallel System using Node duplication
Task graph scheduling is the important factor which occurs in the multiprocessor system. There is problem solving technique called NP complete which is the optimal scheduling of parallel tasks with some precedence relationship onto parallel machines and can be solved only by using heuristic approach. The execution time requirements of the applications tasks are assumed to be stochastic. Genetic...
متن کاملGreen Energy-aware task scheduling using the DVFS technique in Cloud Computing
Nowdays, energy consumption as a critical issue in distributed computing systems with high performance has become so green computing tries to energy consumption, carbon footprint and CO2 emissions in high performance computing systems (HPCs) such as clusters, Grid and Cloud that a large number of parallel. Reducing energy consumption for high end computing can bring various benefits such as red...
متن کاملAccelerating high-order WENO schemes using two heterogeneous GPUs
A double-GPU code is developed to accelerate WENO schemes. The test problem is a compressible viscous flow. The convective terms are discretized using third- to ninth-order WENO schemes and the viscous terms are discretized by the standard fourth-order central scheme. The code written in CUDA programming language is developed by modifying a single-GPU code. The OpenMP library is used for parall...
متن کامل