The LHCb experiment at CERN will have an on-line trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a Farm Monitoring and Control (FMC) application was developped. The FMC is based on DIM(*) and is accessible both through a command line interface and through a PVSS graphical interface. The FMC consists of a Logger, to collect the application messages (which can work either in no-drop or in congestion-proof mode, with filter and duplicate suppression capability), an IPMI Power Manager to switch on/off the farm nodes and monitor physical parameters, a Task Manager to start/stop processes (able to manage real-time schedulers, to real-time notify a process termination and to redirect application stdout/stderr to the FMC logger), a Process Controller to manage automatic process respawn and a detailed but light-weight Monitoring system. The FMC is an integral part of LHCb's Experiment Control System, in charge of monitoring and controlling all online components: it uses the same tools (DIM, PVSS, FSM, etc.) to guarantee its complete integration and a coherent look and feel throughout the control system.
Galli D., Gregori D., Gaspar C., van Herwijnen E., Bonifazi F., Carbone A., et al. (2007). The LHCb Farm Monitoring and Control System. PISCATAWAY, NJ : IEEE.
The LHCb Farm Monitoring and Control System
GALLI, DOMENICO;GREGORI, DANIELE;CARBONE, ANGELO;PECO, GIANLUCA;VAGNONI, VINCENZO MARIA;
2007
Abstract
The LHCb experiment at CERN will have an on-line trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a Farm Monitoring and Control (FMC) application was developped. The FMC is based on DIM(*) and is accessible both through a command line interface and through a PVSS graphical interface. The FMC consists of a Logger, to collect the application messages (which can work either in no-drop or in congestion-proof mode, with filter and duplicate suppression capability), an IPMI Power Manager to switch on/off the farm nodes and monitor physical parameters, a Task Manager to start/stop processes (able to manage real-time schedulers, to real-time notify a process termination and to redirect application stdout/stderr to the FMC logger), a Process Controller to manage automatic process respawn and a detailed but light-weight Monitoring system. The FMC is an integral part of LHCb's Experiment Control System, in charge of monitoring and controlling all online components: it uses the same tools (DIM, PVSS, FSM, etc.) to guarantee its complete integration and a coherent look and feel throughout the control system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
