In Grid environments, high-performance applications have to take into account the available network performance between the individual sites. Existing monitoring tools like the Network Weather Service (NWS) measure bandwidth and latency of end-to-end network paths. This information is necessary but not sufficient. With more than two participating sites, simultaneous transmissions may collide with each other on shared links of the wide-area network. If this occurs, applications may obtain lower network performance than predicted by NWS. In this paper, we describe Topo Mon, a monitoring tool for Grid networks that augments NWS with additional sensors for the routes between the sites of a Grid environment. Our tool conforms to the Grid Monitoring Architecture (GMA) denned by the Global Grid Forum. It unites NWS performance and topology discovery in a single monitoring architecture. Our topology consumer process collects route information between the sites of a Grid environment and derives the overall topology for utilization by application programs and communication libraries. The topology can also be visualized for Grid application developers.

References in zbMATH (referenced in 4 articles , 1 standard article )

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  1. O’Neil, Shawn T.; Chaudhary, Amitabh; Chen, Danny Z.; Wang, Haitao: The topology aware file distribution problem (2013)
  2. Steffenel, Luiz Angelo; Mounié, Grégory: A framework for adaptive collective communications for heterogeneous hierarchical computing systems (2008)
  3. Baraglia, Ranieri; Ferrini, Renato; Tonellotto, Nicola; Ricci, Laura; Yahyapour, Ramin: A launch-time scheduling heuristics for parallel applications on wide area grids (2007) ioport
  4. den Burger, M.; Kielmann, T.; Bal, H. E.: TOPO: A monitoring tool for grid network topology (2002)