WOW: Self-organizing Wide Area Overlay Networks of Virtual Workstations

摘要: 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 workstations for high-throughput computing. The is architected to: facilitate the addition nodes pool resources through use machines (VMs) self-organizing network links; maintain IP connectivity even if VMs migrate across domains; present end-users applications an environment functionally identical local-area or cluster workstations. We describe IPOP, virtualization technique builds upon novel, extensible user-level decentralized discover, establish links tunnel packets over different transports (including UDP TCP) firewalls. evaluate latency bandwidth overheads IPOP also time taken new node become fully-routable network. report on several experiments conducted testbed WOW deployment with 118 P2P router PlanetLab 33 VMware-based VM six firewalled domains. Experiments show delivers good performance two unmodified, representative benchmarks drawn from life-sciences domain. demonstrate capable seamlessly maintaining at layer typical client/server (NFS, SSH, PBS) when WAN.