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A self-organizing flock of Condors

Ali R. Butt, Rongmei Zhang, Y. Charlie Hu
2006 Journal of Parallel and Distributed Computing  
• Evaluation • Conclusions 21 Software • Implemented as a daemon: poolD -Leverages FreePastry 1.3 from Rice -Runs on central managers -Manages self-organized Condor pools • Condor version  ...  to flockingCondor matchmaking within a pool • P2p approach affects the flocking decisions only 19 Are we discovering enough pools?  ... 
doi:10.1016/j.jpdc.2005.06.022 fatcat:zv35tqrs5jeenex2tsbxihmyki

A Self-Organizing Flock of Condors

Ali Raza Butt, Rongmei Zhang, Y. Charlie Hu
2003 Proceedings of the 2003 ACM/IEEE conference on Supercomputing - SC '03  
Measurements using a synthetic job trace show that self-organized flocking reduces the maximum job wait time in queue for a heavily loaded pool by a factor of 10 compared to without flocking.  ...  This paper presents a technique for resource discovery in distributed Condor pools using peer-to-peer mechanisms that are self-organizing, fault-tolerant, scalable, and locality-aware.  ...  CONCLUSION We have presented a locality-aware p2p approach to remote Condor pool discovery, which yields a self-organizing flock of Condor pools.  ... 
doi:10.1145/1048935.1050192 dblp:conf/sc/ButtZH03 fatcat:lgnreeeof5gifchwfpq4wwnccm


Kyungyong Lee, David Wolinsky, Renato J. Figueiredo
2012 Proceedings of the 21st international symposium on High-Performance Parallel and Distributed Computing - HPDC '12  
In this paper, we present a novel approach that integrates a self-organizing P2P overlay for scalable and timely discovery of resources with unmodified client/server job scheduling middleware in order  ...  To verify the practicality of PonD, we have implemented a prototype using Condor (called C-PonD), a structured P2P overlay, and a PonD creation module.  ...  To overcome the pre-configuration requirements of condor flocking, Butt et al. [10] presented a self-organizing Condor flock that was built upon a structured P2P network.  ... 
doi:10.1145/2287076.2287105 dblp:conf/hpdc/LeeWF12 fatcat:3cqvukk4ffffta4s2czakngbtu

A worldwide flock of Condors: Load sharing among workstation clusters

D.H.J. Epema, M. Livny, R. van Dantzig, X. Evers, J. Pruyne
1996 Future generations computer systems  
So the need arises to extend the Condor load-sharing and protection mechanisms b e y ond the boundaries of Condor pools, or in other words, to create a ock of Condors.  ...  Condor is a distributed batch system for sharing the workload of compute-intensive jobs in a p o o l o f U nix workstations connected by a network.  ...  Acknowledgements We a r e g rateful to M.  ... 
doi:10.1016/0167-739x(95)00035-q fatcat:a54s6bi7yfbc5lcyijdwnsjeqe

PhoenixG: a unified management framework for industrial information grid

Jianfeng Zhan, Gengpu Liu, Lei Wang, Bibo Tu, Yi Jin, Yang Li, Yan Hao, Xuehai Hong, Dan Meng, Ninghui Sun
2006 Sixth IEEE International Symposium on Cluster Computing and the Grid (CCGRID'06)  
Second, we propose a self-organizing algorithm that supports the initial establishment, daily management and exception processing of IIG.  ...  Industrial Information Grid (IIG) is a special kind of Grid system, the users of which exclusively own geographically distributed resources for Web service applications and try to decrease the lowest total  ...  Flock of Condors presents a technique for resource discovery in distributed Condor pools using peer-to-peer mechanisms that are self-organizing, fault-tolerant, scalable, and locality-aware.  ... 
doi:10.1109/ccgrid.2006.79 dblp:conf/ccgrid/ZhanLWTJLHHMS06 fatcat:n7z2vmnzpzbg5hrnfocfazshva

Page 29 of None Vol. 7, Issue 3 [page]

1986 None  
“After all this time it still looks like a living organism to me,’ MacCready mur- murs.  ...  He would like to see flocks of pterosaurs soaring the skies as part of an outdoor museum of prehis- tory that would demonstrate how the world looked millions of years ago.  ... 

Simplifying resource sharing in voluntary grid computing with the grid appliance

David Isaac Wolinsky, Renato J. Figueiredo
2008 Proceedings, International Parallel and Distributed Processing Symposium (IPDPS)  
Voluntary grids introduce a host of issues to tackle, most importantly getting users involved quickly.  ...  A shortcoming of such systems is that most users are often limited to contributing resources and few users are capable of developing or porting their own applications in order to use these resources.  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF.  ... 
doi:10.1109/ipdps.2008.4536449 dblp:conf/ipps/WolinskyF08 fatcat:odspjs3z7re65n7aieuc3howge

The reintroduction of the Andean condor into Colombia, South America: 1989–1991

Alan Lieberman, Jose Vicente Rodriguez, Juan Manuel Paez, Jim Wiley
1993 Oryx  
From 1989From to 1991 captive-reared Andean condors Vultur gryphus were released into three protected areas in the Andes of Colombia, South America.  ...  techniques necessary to recover their native condor.  ...  He had been a champion of the condor project since its beginnings in 1989 and much of its success is a direct result of his tireless work and dedication to the condor and to the natural heritage of Colombia  ... 
doi:10.1017/s0030605300020603 fatcat:x3nuau54sra4zkkzgxztrw64ma

Facilitating the deployment of ad-hoc virtual organizations with integrated social and overlay networks

Renato Figueiredo, P. Oscar Boykin, Pierre St. Juste, David Wolinsky
2008 Proceedings of the 17th international symposium on High performance distributed computing - HPDC '08  
across multiple organizations are daunting to many potential users, presenting a barrier to entry that significantly hinders wider deployment of VOs.  ...  We advocate an approach where social networking and self-configuring overlay virtual networks are integrated in a novel way that allows simple deployment and management of ad-hoc infrastructures for VOs  ...  It also sup-ports self-organizing flocking through the DHT, in a manner similar to the one described in [1] .  ... 
doi:10.1145/1383422.1383448 dblp:conf/hpdc/FigueiredoBJW08 fatcat:s3ndjeltobe6vgysfl5hs3gpse

Status of the California Condor (Gymnogyps californianus) and Efforts to Achieve Its Recovery

Jeffrey R. Walters, Scott R. Derrickson, D. Michael Fry, Susan M. Haig, John M. Marzluff, Joseph M. Wunderle
2010 The AUK: A Quarterly Journal of Ornithology  
Because of this, conducting this review has been a great pleasure for all of us.  ...  Examples of outreach programs by partners in the condor recovery effort can be found at html,, and www.  ...  PROGRAMMATIC ISSUES Program Organization and Administration Condor recovery partners are currently self-organized into a diffuse network (Fig. ) .  ... 
doi:10.1525/auk.2010.127.4.969 fatcat:kkj35kmmszgf5d3m6bgxgj5yhq

Demography of the California Condor: Implications for Reestablishment

Vicky J. Meretsky, Noel F. R. Snyder, Steven R. Beissinger, David A. Clendenen, James W. Wiley
2000 Conservation Biology  
The remnant wild population of California Condors ( Gymnogyps californianus ) of the 1980s exhibited a rapid population decline caused by high mortality rates among adult and immature birds.  ...  Behavioral problems could be more quickly overcome by adoption of a comprehensive experimental approach.  ...  Austin of the USFWS, K. Sorensen of Ventana Wilderness Society, and S. Farry of the Peregrine Fund provided details of releases by those organizations. We thank S. Derrickson, R.  ... 
doi:10.1046/j.1523-1739.2000.99113.x fatcat:iq4etpvxondh5gd5pm7rbcorb4

Page 165 of Foreign Quarterly and Westminster Review Vol. 17, Issue 33 [page]

1836 Foreign Quarterly and Westminster Review  
, is the only instance, we believe, of a venomous organ being found among the mammalia.  ...  Its webbed feet and aqua- tic habits are common to many of its class, but the extraordi- nary spur with which the posterior legs of the male are furnished, and which are said to vent a venom in self-defence  ... 

The Flock Behavior of the Coast Bush-Tit

R. C. Miller
1921 The Condor  
Whether or not the differences between the flock behavior of the Bushtit and that of various other birds manifesting a more complicated type of flock organization are differences of kind or of degree only  ...  Sometimes two or three self-appointed leaders move off simultaneously in different directions. It seems then to be largely a matter of caprice which cne the flock follows.  ... 
doi:10.2307/1362474 fatcat:5s4xakelendqbgloyzend5hihe

Self-organizing communication-aware resource management for scheduling in grid environment

Qinghua Zheng, Haijun Yang, Yuzhong Sun
2005 Eighth International Conference on High-Performance Computing in Asia-Pacific Region (HPCASIA'05)  
Rapid advances in network and computer technologies are making networked computers, organized in the form of Grid, an appealing vehicle for cost-effective parallel computing.  ...  exploit the proximity property between resources, which improves greatly the efficiency of our partitioning work.  ...  Compared to the Condor pool and the Condor flock, our resource cluster is self-organizing, communication-aware and thus isolates communications from scheduling.  ... 
doi:10.1109/hpcasia.2005.90 fatcat:cbteqmzywveg5oaovmni6ve3rm

Experiences with self-organizing, decentralized grids using the grid appliance

David Isaac Wolinsky, Renato Figueiredo
2011 Proceedings of the 20th international symposium on High performance distributed computing - HPDC '11  
Our work distinguishes itself from other projects with similar objects by enabling a combination of decentralized system organization and user access for job submission in addition to a web 2.0 interfaces  ...  These components contribute to the design of the "Grid Appliance," an implementation of a wide area overlay network of virtual workstations (WOW), which has developed over the past six years into a mature  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF.  ... 
doi:10.1145/1996130.1996156 dblp:conf/hpdc/WolinskyF11 fatcat:xumxopr77fcrxi2mnn56e3no7q
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