OLiMPS – OpenDaylight – Addressing a yet unsolved issue in LHCONE, namely the efficiency in interconnecting multiple network domains over more than one connection, Caltech is investigating and has made significant progress in developing the use of multipath connectivity through OpenFlow networks. In the OpenFlow Link-layer MultiPath Switching (OLiMPS) project, funded by DOE/OASCR, the group has developed an OpenFlow controller based on Big Switch’s Floodlight open-source controller. To this end, we
Tools
September 6, 2020
PhEDEx
PhEDEx is the data-placement management tool for the CMS experiment at the LHC. It manages the scheduling of all large-scale WAN transfers in CMS, ensuring reliable delivery of the data. It consists of several components: an Oracle database, hosted at CERN a website and data-service, which users (humans or machine) use to interact with and control PhEDEx a set of central agents that deal with routing, request-management, bookkeeping and other
September 2, 2020
MonALISA
MonALISA, stands for Monitoring Agents using a Large Integrated Services Architecture, has been developed by Caltech and its partners with the support of the U.S. CMS software and computing program. The framework is based on Dynamic Distributed Service Architecture and is able to provide complete monitoring, control and global optimization services for complex systems. The MonALISA system is designed as an ensemble of autonomous multi-threaded, self-describing agent-based subsystems which are registered
August 25, 2020
FDT
FDT – One of the key advances in this demonstration was Fast Data Transport (FDT; http://monalisa.cern.ch/FDT), a Java application developed by the Caltech team in close collaboration with the Polytehnica Bucharest team. FDT runs on all major platforms and uses the NIO libraries to achieve stable disk reads and writes coordinated with smooth data flow across long-range networks. The FDT application streams a large set of files across an open TCP socket,