CDF II Production Farm Project

Abstract

We describe the architecture and discuss our operational experience in running the off-line reconstruction farm of the CDFII experiment. The Linux PC-based farm performs a wide set of tasks, ranging from producing calibrations and primary event reconstruction to large scale ntuple production. The farm control software uses a standard Condor toolkit [1] and the data handling part is based on SAM (Sequential Access via Metadata [2]) software. During its lifetime, the CDFII experiment will integrate a large amount of data (several petabytes) and the data processing chain is one of the key components of the successful physics program of the experiment.

A Direct Measurement of the $W$ Decay Width

“…Raw data w ritten to tape are processed again offline, using calibration and align ment parameters obtained from the data, before being used for analyses [40]. Of fline event reconstruction is done using a farm of Linux PCs, and reconstructed events are written to tape.…”