Difference between revisions of "Atlas:SC4"
(→Post-mortem DDM meeting) |
(→Daily news) |
||
| Ligne 89: | Ligne 89: | ||
* [https://uimon.cern.ch/twiki/bin/view/Atlas/DDMSc4#Daily_log SC4 Data Managment Daily log] | * [https://uimon.cern.ch/twiki/bin/view/Atlas/DDMSc4#Daily_log SC4 Data Managment Daily log] | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
* SC4 transfers from LYON to T2s: | * SC4 transfers from LYON to T2s: | ||
Version du 13:58, 25 septembre 2006
Sommaire
Bienvenue sur la page Atlas SC4 LCG-France
Welcome to the LCG-France Atlas SC4 page
Compte rendu de la réunion SC4 ATLAS au CERN du 9 Juin (S.Jézéquel, G. Rahal) (written in french)
- T0 Role(CERN)
- Produce dummy files with 1 to 2 GB size(RAW, ESD et AOD) (see T0 Twiki)
- Initiate T0->T1 transfers
- FTS server sents files to Lyon choosing between 'TAPE' (RAW 43,2 Mo/s) or 'DISK' (ESD,AOD 23+20 Mo/s) areas
- T1 Role (CCIN2P3)
- Get files from T0 (dedicated dcache area: L. Schwarz)
- Provides LFC (lfc-atlas.in2p3.fr) and FTS service (cclcgftsli01.in2p3.fr) (D. Bouvet)
- Send all AODs to each T2 (20 Mo/s) using Lyon FTS server
- Regurlarly cleanup files
- T2 Role (BEIJING, LAL, LAPP, LPC, LPNHE, SACLAY, TOKYO)
- Get files from T1 (Lyon). Files on the T2 are written in /home/atlas/sc4tier0/...
- Clean-up the files (?)
- Other roles
- ATLAS (S. Jézéquel, G. Rahal) : Initiate T1->T2 transfers
Information from DDM monitoring
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stack4h.png http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stack4ht2.png
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stackday.png
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stackdayLYON.png
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stackdayt2.png
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stackweek.png
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stackweekLYON.png
- http://atlas-ddm-monitoring.web.cern.ch/atlas-ddm-monitoring/rrd/plots/stackweekt2.png
--
- Transfer rates for LYON and associated T2s (validated files by DDM):
Information from FTS monitoring
- T1->T2 :
- 15 concurrent files and 10 streams for LYON-TOKYO
- 5 concurrent files and 5 streams for LYON-BEIJING (SE not enough powerful for 15/15 )
- 10 concurrent files and 10 streams for LYON-French T2s (LAL, LPNHE, LPC, SACLAY) except for LAPP (5 concurrent files and 1 stream)
Information from dCache monitoring (provided by Lyon)
- Monitoring of dcache for SC4 areas
- LYONDISK : 25 gridftp concurrent access maximum
- LYONTAPE : 10 gridft concurrent access maximum
VOBOX Configuration
- 4 processors 3 GHz
- 4 GB of memory ( 2 GB dedicated to SWAP)
- The monitoring of the Vobox daily, weekly and monthly can be found Here
Disk space availability
Daily news
- SC4 transfers from LYON to T2s:
- Simultaneous transfers to the 7 T2 sites for more than 24 hours; it reached more than 25MB/s
