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The "Architecture" page has been changed by ChiaHungLin: https://wiki.apache.org/hama/Architecture?action=diff&rev1=162&rev2=163 === GroomServer === - A Groom Server (shortly referred to as groom) is a process that launches bsp tasks assigned by BSPMaster. Each groom contacts the BSPMaster, and it takes assigned tasks and reports its status by means of periodical piggybacks with BSPMaster. Each groom is designed to run with HDFS or other distributed storages. Basically, a groom server and a data node should be run on one physical node to get the best performance. (Data-locality) + A [[GroomServer|Groom Server]] (shortly referred to as groom) is a process that manages life cycle of bsp tasks assigned by BSPMaster. Each groom contacts the BSPMaster, and reports task statuses by means of periodical piggybacks with BSPMaster. Each groom is designed to run with HDFS or other distributed storages. Basically, a groom server and a data node should be run on one physical node to get the best performance for data-locality. However, in a massive parallel environment, the benefit of data locality is lost when large amount of virtual processes must be multiplexed onto physical processes[1]. === Zookeeper === A Zookeeper is used to manage the efficient barrier synchronization of the BSPPeers. Later, it will also be used for the area of a fault tolerance system. + === Reference === + [1]. David B. Skillicorn, Jonathan M. D. Hill, and W. F. McColl. Questions and Answers about BSP. Scientific Programming, 6(3):249-274, Fall 1997. +
