Introduction L. Poggioli, LAL ATLAS latest news Actions list - - PowerPoint PPT Presentation

CAF_T2_150514 Luc 1

Introduction

• L. Poggioli, LAL
• ATLAS latest news
• Actions list

Inputs from recent meetings

– LCG-TECH ftf 16/04

https://indico.in2p3.fr/conferenceDisplay.py?confId=9731

– Pre-GDB 13/05

http://indico.cern.ch/event/272787/

CAF_T2_150514 Luc 2

Pledges: C-RSG feedback (1)

CPU reduction: HLT usage should Be pledged

CAF_T2_150514 Luc 3

Pledges: C-RSG feedback (2)

Potential budget crisis?

• Run-2 LHC parameters likely to be pessimistic
• Flat budget model limitations (C-RSG study ongoing)

CAF_T1_150514 Luc 4

Activities since last CAF

OK but big fluctuations from production

CAF_T1_150514 Luc 5

Production last month (1)

SW not ready / Lack of jobs to process

CAF_T1_150514 Luc 6

Production forecast

• Based on delivery of new sw release 19.x.x end May
• Till then NO MCORE activities

Claire, Wolfgang ADC weekly 29/04

CAF_T2_150514 Luc 7

MCORE

• Today

– MC12 simul & reco 1core – MC14 xcore – Xcore: 25-30% total

• Soon

– Only MC14 – Xcore: 60-70% total

• “Big” sites

– Asked to deploy xcore dynamically (a priori easy in Torque) – Timescale: 1-2 months (i.e. to be ready for DC14)

After clarification with Andrej, Simone, Andreu

CAF_T2_240314 Luc 8

JIRA, RUCIO

• Savannah -> JIRA migration

– Almost done (DPD project remains to move)

• RUCIO

– Migrated clouds: ALL but US, CERN, NDGF – Full commissioning stress test (on real but not

• fficial data) 20/05-End June

– All DDM endpoints have new naming except /SAM/ subdirectory

• Files and directories not following this convention are
• ut of DDM catalogs (dark data) and can be removed
• To be done per site/squad

CAF_T2_240314 Luc 9

• All FR-sites have deployed perfSonar
• Monitoring http://maddash.aglt2.org/maddash-webui/
• More a site tool than a VO tool
• F. Schaer is following

– eg Firewall issues, asymmetries, inconsistencies

perfSonar

Bandwidth Latency

CAF_T2_240314 Luc 10

XrootD/FAX/HTTP (1)

• ATLAS priorities to sites (for T1s/T2Ds)

1) Enable xrootD data access 2)Enable FAX 3) Enable HTTP/WebDaV data access

• Done for most FR-T2Ds& T1

– LPC ongoing, LPSC?

• FAX: 48 sites in

– Failover mode

• 241 queues (prod & ana)
• Tiny %network used

– Overflow mode

• Leave data, move job
• Tested for US sites

SSB dashboard Rob, pre-GDB

CAF_T2_240314 Luc 11

XrootD/FAX/HTTP (2)

• WebDAV

– All functionalities to manipulate data

• RUCIO aware of sites DT
• RUCIO knows where to find replicas

– Supports FTS (candidate to replace SRM)

• When final RUCIO migration done

– Possible to access files via WebDaV – 62 sites today, 329 endpoints – Access via RUCIO redirector or Metalinks

• Efforts needed

– SAM tests, Monitoring

Cédric, pre-GDB

LCG-TECH_16042014 Luc Poggioli 12

Remote access to local storage

• ATLAS recommendation

– xrootd direct access for analysis – xrdcp for production (copy-to-scratch)

• For dpm sites

– Most sites are using copy-to-scratch with lcg-cp, but should be encouraged to move to xrootd

• More efficient than gridftp copy-to-scratch
• RFIO broken for directIO
• For dCache

– Analysis: Xrootd & dcap similar performance – Prod: xrdcp (eg at CC)

Campana, Elmheuser, Manoulis

CAF_T2_240314 Luc 13

Actions List (1)

• FAX

– Follow test jobs results & understand

• perfSonar

– Follow BW & latency performance

• Xrootd DA for analysis queues

– If no objection from sites, proceed

• MCORE

– Try with IRFU, TOKYO – Dynamic

• Pledges deployment?

CAF_T2_240314 Luc 14

Actions List (2)

• ARC CE

– Machines in // Try CPPM, LPSC ?

• Sites

– Analysis queue at Beijing Done – Romania: RO-07 as T2D

• Support

– DAST situation improved (eg Laurent has joined) – Squad

• No news bad news
• Recontact all sites (eg Saclay, LAPP, LPC)
• Next week: HEPIX 19-23 May at LAPP