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Asymptotics of Insensitive Load Balancing and Blocking Phases [article]

Matthieu Jonckheere, Balakrishna Prabhu
2016 arXiv   pre-print
We address the problem of giving robust performance bounds based on the study of the asymptotic behavior of the insensitive load balancing schemes when the number of servers and the load scales jointly  ...  This further implies the existence of different phases for the blocking probability, Before a (refined) critical load ρ_c(n)=1-a n^- θθ+1, the blocking is exponentially small and becomes of order n^- θθ  ...  blocking phase.  ... 
arXiv:1605.02996v1 fatcat:etnewsbkdfd6rgk2dugvj36qdm

Asymptotics of Insensitive Load Balancing and Blocking Phases

Matthieu Jonckheere, Balakrishna J. Prabhu
2016 Performance Evaluation Review  
We address here the problem of giving robust performance bounds based on the study of the asymptotic behavior of the insensitive load balancing schemes when the number of servers and the load scales jointly  ...  Load balancing with various types of load information has become a key component of modern communication and information systems.  ...  blocking phase.  ... 
doi:10.1145/2964791.2901454 fatcat:vtyiggweijcyrlidtw6wiyfxvu

Asymptotics of Insensitive Load Balancing and Blocking Phases

Matthieu Jonckheere, Balakrishna J. Prabhu
2016 Proceedings of the 2016 ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Science - SIGMETRICS '16  
We address here the problem of giving robust performance bounds based on the study of the asymptotic behavior of the insensitive load balancing schemes when the number of servers and the load scales jointly  ...  Load balancing with various types of load information has become a key component of modern communication and information systems.  ...  blocking phase.  ... 
doi:10.1145/2896377.2901454 dblp:conf/sigmetrics/JonckheereP16 fatcat:iqaawdmc5fhk3gqlu3slykjb3e

Asymptotics of insensitive load balancing and blocking phases

Matthieu Jonckheere, Balakrishna J. Prabhu
2017 Queueing systems  
We address here the problem of giving robust performance bounds based on the study of the asymptotic behavior of the insensitive load balancing schemes when the number of servers and the load scales jointly  ...  Load balancing with various types of load information has become a key component of modern communication and information systems.  ...  blocking phase.  ... 
doi:10.1007/s11134-017-9559-5 fatcat:tpfrgajtb5dp7iho4toli35jvi

Large-System Insensitivity of Zero-Waiting Load Balancing Algorithms [article]

Xin Liu, Kang Gong, Lei Ying
2022 arXiv   pre-print
This paper studies the sensitivity (or insensitivity) of a class of load balancing algorithms that achieve asymptotic zero-waiting in the sub-Halfin-Whitt regime, named LB-zero.  ...  This paper establishes the large-system insensitivity of LB-zero for jobs whose service time follows a Coxian distribution with a finite number of phases.  ...  Another significant result is [6] , which identifies a set of policies that are insensitive in many-server load-balancing systems and are optimal in the class of insensitive load balancing algorithms.  ... 
arXiv:2202.07971v1 fatcat:phmdduumzrfkdls6ykjzp2rbli

Handling Data-skew Effects in Join Operations Using MapReduce

M. Al Hajj Hassan, M. Bamha, F. Loulergue
2014 Procedia Computer Science  
A cost analysis of this algorithm shows that our approach is insensitive to data skew and ensures perfect balancing properties during all stages of join computation.  ...  In this paper, we introduce MRFA-Join algorithm: a new frequency adaptive algorithm based on MapReduce programming model and a randomised key redistribution approach for join processing of large-scale  ...  However, load balancing in the case of join operations is not straightforward in the presence of data-skew.  ... 
doi:10.1016/j.procs.2014.05.014 fatcat:6mz6o3h3z5awdbtyn6633yu6su

An Efficient Equi-semi-join Algorithm for Distributed Architectures [chapter]

M. Bamha, G. Hains
2005 Lecture Notes in Computer Science  
The performance of this algorithm is analyzed using the BSP cost model and is proved to have asymptotic optimal complexity and perfect load balancing even for highly skewed data.  ...  However the overcost related to semi-joins computation can be very high due to data skew and to the high cost of communication in distributed architectures.  ...  This algorithm guarantees a perfect balancing of the load of the different processors during all the stages of the semi-join computation because the data redistribution is carried out jointly by all processors  ... 
doi:10.1007/11428848_97 fatcat:tcxn4mwe4nchvlhqlwjt6qajzy

Robust adaptive fuzzy control of a three-phase active power filter based on feedback linearization

Shixi HOU, Juntao FEI
2017 Turkish Journal of Electrical Engineering and Computer Sciences  
The proposed controller can ensure proper tracking of the reference current and impose desired dynamic behavior, giving robustness and insensitivity to parameter variations.  ...  Adaptive fuzzy proportional-integral control is applied to the DC voltage dynamics outer loop to improve the dynamic response and reduce the error of the stable state.  ...  When t=0.1 s, the same nonlinear load is added to the circuit. Figures 7 and 8 show the load current and source current (only one phase current is represented for clarity).  ... 
doi:10.3906/elk-1506-153 fatcat:zqfrabuv3vad7fawtflc2bxjda

Design and implementation of fuzzy sliding mode controller for switched reluctance motor

M. A. A. Morsy, M. Said A. Moteleb, H. T. Dorrah
2008 2008 IEEE International Conference on Industrial Technology  
Finally, the expermintal controlled system is illustrated for closed loop and experimental results are presented which show the validity and effectiveness of the proposed FSMC.  ...  Based on the technique of variable structure control (VSC) with sliding mode, we can construct the controller that possesses the merits of both fuzzy controller and variable structure controller.  ...  Fig. (4) shows the block diagram of one phase for SRM.  ... 
doi:10.1109/icit.2008.4608511 fatcat:iy3e2xmgbfbvpd4oheunkksbjq

Effects of Maintaining Touch Contact on Predictive and Reactive Balance

Leif Johannsen, Alan M. Wing, Vassilia Hatzitaki
2007 Journal of Neurophysiology  
Effects of maintaining touch contact on predictive and reactive balance.  ...  Although we employed a blocked design that might have lent itself to an analysis of trial effects, relatively few trials per block were run so our study design would be insensitive to such effects and  ...  for 1st phase; 5 time intervals for 2nd phase) and loading as independent factors.  ... 
doi:10.1152/jn.00038.2007 pmid:17303815 fatcat:bj7rvd3klrdtxejmwv64etdp5u

The robust stability of seesaw system with fuzzy logic control

F-M. Yu, H-Y. Chung, C-N. Huang
2005 International journal of computer applications in technology  
In addition, generations and tuning of control rules are more tractable. Other attractive feature of the approach includes the insensitivity to the uncertainties and disturbances.  ...  Finally, a seesaw system subject to external disturbance and loading experimental results are given to show the effectiveness and feasibility of the approach.  ...  ACKNOWLEDGMENTS The authors also appreciate the financial support of the National Science Council of the Republic of China under Contract NSC 91-2213-E008-023.  ... 
doi:10.1504/ijcat.2005.007203 fatcat:kdp4iovllvci3abvlbhj3tyxou

Voltage Balancing Control of IPOS Modular Dual Active Bridge DC/DC Converters Based on Hierarchical Sliding Mode Control

Sangmin Lee, Yoon-Cheul Jeung, Dong-Choon Lee
2019 IEEE Access  
Furthermore, due to the robustness of the sliding-mode control, the control performance is insensitive to the mismatch of leakage inductances of the DAB transformers.  ...  The feasibility of the proposed control scheme has been proved by simulation and experimental results.  ...  Fig. 8(c) shows the phase-shift ratios of the two DAB modules, where d 1 and d 2 are different for the balancing control. Fig. 8(d) shows the output power of the IPOS modular DAB converter.  ... 
doi:10.1109/access.2018.2889345 fatcat:best7nm62rb2fihg3h5tilfbxu

Design and Implementation of Sliding Mode and PI Controllers based Control for three Phase Shunt Active Power Filter

M.T. Benchouia, I. Ghadbane, A. Golea, K. Srairi, M.H. Benbouzid
2014 Energy Procedia  
phase shunt Active Power Filter (APF).  ...  Abstract─ This paper presents a simulation and experimental comparative study of Sliding Mode Controller (SMC) and Proportional Integral (PI) regulator based the control of the DC bus voltage of three  ...  A block diagram of the controlling algorithm is shown in Fig. 2 . The feedback signals are sensed from the load currents, AC source voltages and DC bus voltages of APF.  ... 
doi:10.1016/j.egypro.2014.06.061 fatcat:kfoxyhnm7faf7psenswddftpxy

On Universal Scaling of Distributed Queues under Load Balancing [article]

Xin Liu, Lei Ying
2019 arXiv   pre-print
The set of load balancing algorithms that satisfy the sufficient condition includes join-the-shortest-queue (JSQ), idle-one-first (I1F), and power-of-d-choices (Pod) with d≥ N^αlog^2 N.  ...  This paper considers the steady-state performance of load balancing algorithms in a many-server system with distributed queues.  ...  The Power of Two Choices in Randomized Load Balancing. Finally, a job that is not routed to an idle server is either blocked Ph.D. Dissertation.  ... 
arXiv:1912.11904v1 fatcat:z7ynbfekqvaapkaphyq4lawrmm

An Optimal Skew-insensitive Join and Multi-join Algorithm for Distributed Architectures [chapter]

Mostafa Bamha
2005 Lecture Notes in Computer Science  
This algorithm is proved to have optimal complexity and deterministic perfect load balancing.  ...  This algorithm improves our fa join and sfa join algorithms by reducing their communication and synchronization cost to a minimum while offering the same load balancing properties even for highly skewed  ...  technique allowing to reduce the communication costs to the minimum while guaranteeing near perfect balancing properties.  ... 
doi:10.1007/11546924_60 fatcat:xl6ra7f5xzco5igz6iqw273hoe
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