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WOW: Self-Organizing Wide Area Overlay Networks of Virtual Workstations
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Jul 30, 2008 7:39 AM by renatojfig
Last Modified:
Jul 30, 2008 7:42 AM by renatojfig
<div class='jive-rendered-content'><p>This paper describes WOW, a distributed system that combines virtual machine, overlay networking and peer-to-peer techniques to create scalable wide-area networks of virtual workstations for high-throughput computing. The system is architected to: facilitate the addition of nodes to a pool of resources through the use of system virtual machines (VMs) and self-organizing virtual network links; to maintain IP connectivity even if VMs migrate across network domains; and to present to end-users and applications an environment that is functionally identical to a local-area network or cluster of workstations. We describe a novel, extensible user-level decentralized technique to discover, establish and maintain overlay links to tunnel IP packets</p><p>over different transports (including UDP and TCP) and across firewalls. We also report on several experiments conducted on a testbed WOW deployment with 118 P2P router nodes over PlanetLab and 33 VMware-based VM nodes distributed across six firewalled domains. Experiments show that the latency in joining a WOW network is of the order of seconds: in a set of 300 trials, 90% of the nodes self-configured P2P routes within 10 seconds, and more than 99% established direct connections to other nodes within 200 seconds. Experiments also show that the testbed delivers good performance for two unmodified, representative benchmarks drawn from the life-sciences domain. The testbed WOW achieves an overall throughput of 53 jobs/minute for PBS-scheduled executions of the MEME application (with average single-job sequential running time of 24.1s) and a parallel speedup of 13.5 for the PVM-based fastDNAml application. Experiments also demonstrate that the system is capable of seamlessly maintaining connectivity at the virtual IP layer for typical client/server applications (NFS, SSH, PBS) when VMs</p><p><span>migrate across a WAN.|||||</span><a class="jive-link-external-small" dynsrc="#" href="http://byron.acis.ufl.edu/papers/hpdc_wow.pdf" lowsrc="#" src="#">http://byron.acis.ufl.edu/papers/hpdc_wow.pdf</a></p></div>
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Tags:
security
,
migration
,
clusters
,
virtual_network
,
grid
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