Go to Home Page
Scientific Program
Docs by topics
Social events
Conference location
 • Grid WShop & Tutorial
 • Grid Program
 • Visiting Padova
 • INFN Padova
 • University of Padova
 • CHEP: '94 '95 '97 '98

Last update: Apr 1, 2000

to first abs  to previous absby abs number to next abs  to last abs


on same keytopic to next abs on this KT  to last abs on this KT


The Compass Computing Farm Project

Massimo Lamanna
 CERN IT and INFN Trieste

Speaker: Massimo Lamanna

  The Compass experiment (CERN) will start detector commissioning and data taking in year 2000; together with the CERN IT/PDP group proposed the Compass Computing Farm project (CCF).
  The CCF main tasks are:
  - central data recording (10G events at 35 MB/s many months a year)
  - reconstruction of all data (300 TB/y)
  - some analysis and filtering (samples below 1 TB will be exported)
  The estimated computing power is 2,000 SpecINT95, provided by some 100 PCs; Gigabit and Fast Ethernet are deployed. A disk pool of few TB is being setup: presently most of the disk space is SCSI but EIDE is under consideration.
  The solutions for the data storage are still under test, together with the development of the C++ reconstruction program. Presently, the events are stored as objects in Objectivity/DB; the data bases are moved between the disk pool and the tape system with HSM solutions (developed by IT/PDP).
  The present PC farm (Sep.1999) allows to sustain the 35 MB/s rate into Objectivity/DB using 11 PCs (Dual PII 450 MHz) for many hours in a realistic environment. The distribution of the events to the CPU clients (for reconstruction) is also under test.

Presentation:  Adobe Acrobat pdf Short Paper:  Adobe Acrobat pdf 

  | Top | Home | Bulletins | Committees | Scientific Program | Docs by topics | Social Event | Conference Location | Secretariat | Privacy Policy |