Performance Modeling of Parallel Computers NOW and Grid
Peter Hanuliak,
Michal Hanuliak
Issue:
Volume 2, Issue 5, October 2013
Pages:
112-124
Received:
3 September 2013
Published:
30 October 2013
Abstract: The paper describes development, realization and verification of more precise analytical models for the study of the basic performance parameters of parallel computers based on connected parallel computers (Cluster, NOW, Grid). At first the paper describes very shortly the developing steps of parallel computer architecture and then he summarized the basic concepts for performance modeling of mentioned parallel computers. To illustrate theoretical evaluation concepts the paper considers in its experimental part the achieved results on concrete analyzed examples and their comparison. The suggested model considers for every node of the NOW or Grid networks one part for the own workstation’s activities and another one for node’s communication channel modeling of performed data communications. In case of using multiprocessor system, as modern node’s communication processor, the suggested model considers for own node’s activities M/D/m queuing theory system and for every node’s communication channel M/D/1 system. Based on these more realistic assumptions we have been developed improved analytical models to account the real no exponential nature of the inputs to the modeling queuing systems. The achieved results of the developed models were compared with the results of the common used analytical and simulation model to estimate the magnitude of their improvement. The developed analytical models could be used under various ranges of input analytical parameters, which influence the architecture of NOW or Grid computer networks and which are interested from the sight of practical using. These consequences are in relation to the developed analytical models and their verifications through simulation model.
Abstract: The paper describes development, realization and verification of more precise analytical models for the study of the basic performance parameters of parallel computers based on connected parallel computers (Cluster, NOW, Grid). At first the paper describes very shortly the developing steps of parallel computer architecture and then he summarized th...
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Robust Cellular Network for Rural Telephony in Southern Nigeria
A. A. Ojugo.,
R. E. Yoro.,
D. Oyemade.,
M. O. Yerokun.,
A. O. Eboka,
E. Ugboh,
F. O. Aghware
Issue:
Volume 2, Issue 5, October 2013
Pages:
125-132
Received:
3 September 2013
Published:
10 November 2013
Abstract: The paper identifies the state of telecommunication’s services and its growth cum economic relevance in Nigeria, while proffering a cost-effective and less problematic telephone network that is readily affordable and available to the poverty-stricken populace predominant in rural areas. The design and implementation of an efficient, robust network based on existing Global Satellite for Mobile communication) cum Code Division Multiple Access, as means to cater and provide for telecommunications in rural Delta State in Nigeria. A major hinderance to the provision of such services/facilities in rural area for decades, has been the high operational cost and little profit margins. Thus, the robust network aims to create an effective, affordable option for such rural and semi-urban settler; while on the part of operators, a system with minimal cost to implement, deploy and maintain for Delta State Senatorial District in Delta State, Nigeria, is used as the case study to test-run the analysis and design of such a novel cellular network.
Abstract: The paper identifies the state of telecommunication’s services and its growth cum economic relevance in Nigeria, while proffering a cost-effective and less problematic telephone network that is readily affordable and available to the poverty-stricken populace predominant in rural areas. The design and implementation of an efficient, robust network ...
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Authority Ring Periodically Load Collection for Load Balancing of Cluster System
Sharada Santosh Patil,
Arpita N. Gopal
Issue:
Volume 2, Issue 5, October 2013
Pages:
133-139
Received:
22 October 2013
Published:
20 November 2013
Abstract: Now a day clusters are more popular because of their parallel processing and super computing capabilities. Generally complicated processes needs more amount of time to run on single processor but same can give quick result on clusters because of their parallel execution capabilities due to their compute nodes. Typically this performance depends on which load balancing algorithm is running on the clustered system. The parallel programming on the cluster can achieve through massage passing interface or application programming interface (API). Though the load balancing algorithm distributing load among the compute nodes of the clusters, it needs parallel programming, hence MPI library plays very important role to build new load balancing algorithm. The workload on a cluster system can be highly variable, increasing the difficulty of balancing the load across its compute nodes. This paper proposes new dynamic load balancing algorithm, which is implemented on Rock cluster and maximum time it gives the better performance as compares with previous dynamic load balancing algorithm.
Abstract: Now a day clusters are more popular because of their parallel processing and super computing capabilities. Generally complicated processes needs more amount of time to run on single processor but same can give quick result on clusters because of their parallel execution capabilities due to their compute nodes. Typically this performance depends on ...
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