1. 1 Leiden, November 20-21, 2001OAC ASTROWISE TEAM OAC WP4: OAC BeoWulf Hardware choice criteria : physical space problem flexible configuration cope with the technology transition for CPU

2. 2 Leiden, November 20-21, 2001OAC ASTROWISE TEAM OAC WP4: OAC BeoWulf BeoWulf arrived in Napoli on November 14th Configuration: 1 Master 8 slave nodes 1 Switch Slave nodes configuration:  cabinet 2U  MB Tyan TIGER 200T dual processor  CPU PIII 1GHz (can mount PIIIs)  RAM 512MB ECC registered  HD 40 GB IBM IDE  Network: 2 modules 100TBase

3. 3 Leiden, November 20-21, 2001OAC ASTROWISE TEAM OAC WP4: OAC BeoWulf Master configuration: cabinet 4 U MB TYAN Thunder HE SL dual Processor CPU: two PIII 1 GHZ RAM: 1 GB ECC registered 2 HD 75 GB + 1 HD 18 GB scsi Gigabit ethernet module Switch: Allied Telesyn 24 ports 100TBase 1 port Gigabit ethernet Total cost: 14 KEU + tax

4. 4 Leiden, November 20-21, 2001OAC ASTROWISE TEAM OAC WP4: OAC BeoWulf Software OS: LINUX 7.2 kernel 2.4.7-10 Administration: OSCAR 1.1

5. 5 Leiden, November 20-21, 2001OAC ASTROWISE TEAM OAC Some results with BeoWulf at ESO To create a Master Bias out of 5 raw WFI images using a special designed eclipse recipe: 68 sec To create a Master Flat-Field out of 5 raw dome-flats and 5 sky-flats: 390 sec To obtain a catalogue of identified standard stars from a raw Landolt field (i.e. including astrometric calibration): 140 sec The same for 1 CCD extension processed on one node: 88 sec