VALENCIA TESTBED SITE IFIC Instituto de Fsica Corpuscular
VALENCIA TESTBED SITE IFIC (Instituto de Física Corpuscular) Universitat de València-CSIC 1
Go. G Farm z 192 Athlon PC (134 IFIC + 58 ICMOL) y. VIA KT 133 A & KT 266 A based Mother. Board y. CPU: AMD Athlon K 7 @ 1. 2 & 1. 4 GHz y. RAM: 2 x 512 Mbytes (SDRAM & DDR SDRAM) y. HD: 40 Gbytes y. NIC: 3 COM 905 CX & Real. Tek RTL 8139 (Fast Ethernet + PXE) y 2 U chassis IFIC (CSIC-València) 2
Go. G Farm z 9 racks (800 x 600 mm) z 22 PCs + 1 network switch per rack z 2 U chassis with 3 fans ypros: xless space required ycons: xadd 240 euros per PC (aprox. ) xheat concentration IFIC (CSIC-València) 3
Go. G Farm IFIC (CSIC-València) 4
Go. G Farm IFIC (CSIC-València) 5
Go. G Farm IFIC (CSIC-València) 6
Go. G Farm IFIC (CSIC-València) 7
Go. G Farm 2 U chassis Athlon PC IFIC (CSIC-València) 8
Local Network IFIC (CSIC-València) 9
Local Network z. All Worker Nodes have private IP addresses in the net 192. 168. 4. 0/22 ysecure environment yadministrative independence from University network management staff z. Communication equipment have public IP addresses in the net 147. 156. 149. 64/26 ycan be monitored and upgraded from University centralized service IFIC (CSIC-València) 10
Local network z. External communications go through gog 01 in which NAT rules are applied y. Connections from Worker Nodes to public nodes are allowed through masquerading with some restrictions, eg: x. FTP requires passive mode y. Connections from external nodes to Worker Nodes requires a previous NAT rule to be configured. IFIC (CSIC-València) 11
Monitoring z Go. G Heartbeat y. Senders (worker nodes) send multicast packets with node info & status in xml format at time intervals. y. Receivers collect info to build statistics or to present a graphical view of the farm to an operator ypros: xconnectionless xseveral receivers can run at the same time ycons: xeverybody can read packets IFIC (CSIC-València) 12
Monitoring z. Main window: ydead/alive status ycpu usage ymemory ydisk (picture refers to IFIC network, not farm) IFIC (CSIC-València) 13
Monitoring z. Client info window yreflects info sent by the client yas obtained mostly from /proc IFIC (CSIC-València) 14
LCFG configuration z. LCFG configuration is being deployed z. Worker nodes boots always using PXE z. DHCP server sends: y. A PXE_MENU with remote linux image and parameters the first time. y. A PXE_MENU with local boot other times IFIC (CSIC-València) 15
LCFG configuration z. Use slightly modified LCFG package to: yuse PXE booting yallow extended partitions on HD yallow different domain than ypdomain ynotify DHCP server at the end of installation the first time IFIC (CSIC-València) 16
LCFG configuration z. We plan to switch to LCFG to configure Worker Nodes, but lack of some LCFG objects prevent us from doing it now (however, it seems that it will be solved soon) z. But, we will use LCFG to configure our Crossgrid Test. Bed for sure. IFIC (CSIC-València) 17
Current grid Activities z. We are participating in this year in the DATA CHALLENGE (DC 1) of ATLAS experiment with to goals: y. Event production in our farm in order to provide samples for physics studies and make the Technical Design Report for the end of 2002. y. To test in our farm the new software, including Geant 4, the new event data model and the evaluation of database technologies (e. g. Root-I/O). IFIC (CSIC-València) 18
- Slides: 18