PROOF at the CAF
The CAF ( Central or CERN Analisys Facility ) is foreseen to provide the computing power for data analysis for LHC at CERN. Experiments plan to use the facility in different ways. ALICE is strongly willing to exploit it via PROOF.
Setup
The 15 machines have dual-quad-core processors, each with 16 GB RAM and about 2.5 TB of pool disk. They all run the CERN official SLC4 linux. The set of machines has been partitioned into two parts:
- dev
- 1 machine reserverd for testing bug fixes and new features;
- pro
- 14 machines for production-style usage, concurrently used by about 20 ALICE users
One machine (alicecaf.cern.ch or lxfsrd0506.cern.ch) is running in master mode, acting also as redirectors, and the remaining in worker mode. All the machines are called lxfsrd*.
Configuration and script files
The relevant files (scripts, configuration) can be downloaded from here:
- the main configuration file;
- the /etc/init.d scripts for xrootd and cmsd;
- the /etc/sysconfig files for xrootd and cmsd;
- the xrd-userconfig.sh requested by xrootd.