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(21 May)
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=== 21 May ===
=== 21 May ===
; 21 May 23h30
; 21 May 23h30
There are many errors in transfers to NIPNE02
There are many errors in transfers to NIPNE02

Version du 23:11, 22 mai 2008

T0-T1 transfer tests (week1)

T1-T1 transfer tests (week2)

Some summaries presented at ADC Operations Meeting http://indico.cern.ch/conferenceDisplay.py?confId=33976

T0-T1-T2 transfer tests (week3)

General remarks


The T0 load generator will run at "peak" rate for 3 days ("peak" rate means data from 24h/day of detector data taking at 200Hz are distributed in 24h, while "nominal" rate means data from 14 hours/day of detector data taking at 200Hz are distributed in 24h).

At peak rate 17,280,000 events/day are produced, corresponding to 27.6 TB/day of RAW, 17.3 TB/day of ESD and 3.5 TB/day of AOD (considering the sizes of 1.6 MB/event for RAW, 1.0 MB/event for ESD and 0.2 MB/event for AOD)

monitoring page

data replication from CERN to Tier-1s http://panda.atlascomp.org/?mode=listFunctionalTests

data replication within clouds http://panda.atlascomp.org/?mode=listFunctionalTests&testType=T1toT2s

Summaries / Reports

CCRC08 https://twiki.cern.ch/twiki/bin/viewfile/LCG/CCRC08DailyMeetingsWeek080519?rev=1;filename=ATLAS-TT-CCRC08-May22.ppt

ADC Oper 22 May http://indico.cern.ch/materialDisplay.py?contribId=3&materialId=slides&confId=34556


Shipping continuously data to T1s according to computing model, sites should demonstrate to sustain for 3 days the following export rates

IN2P3 48.00 MB/s 100.00 MB/s 148.00 MB/s

Metric for success: Sites should be capable of sustaining 90% of the mentioned rates (for both disk and tape) for at least 2 days of test. For sites who would like to test higher throughput, we can oversubscribe (both to disk and tape).

As a reminder, here the table of the necessary space needed at each T1

IN2P3 12.4416 TB 25.92 TB


T2s will receive AODs, which should be generated at a rate of 3.5TB/day. The amount that each site receives depends on the share

  • IN2P3-LPC_DATADISK : 13%
  • GRIF-LAL_DATADISK : 30% (grid.admin a lal.in2p3.fr)
  • BEIJING-LCG2_DATADISK : 20 % (yanxf a ihep.ac.cn, Erming.Pei a cern.ch)
  • RO-07-NIPNE_DATADISK : 10% (ciubancan a nipne.ro)
  • RO-02-NIPNE_DATADISK : 10% (tpreda a nipne.ro)
  • TOKYO-LCG2_DATADISK : 50% (lcg-admin a icepp.s.u-tokyo.ac.jp)

as written in https://twiki.cern.ch/twiki/bin/view/Atlas/DDMOperationsGroup#CCRC08_2_May_2008

The shares are decided rather arbitrary according to the free space in ATLASDATADISK. These numers can be raised at a later stage of the test, but at first we would like to be sure everythinig goes well with this rate.

Current Status

T0-T1 (ALL) http://dashb-atlas-data-tier0.cern.ch/dashboard/request.py/site

  • Throughput
  • Errors

T0-T1 (Lyon) http://dashb-atlas-data-tier0.cern.ch/dashboard/request.py/site?statsInterval=4&name=LYON

  • Throughput
  • Errors

T1-T2 (Lyon) http://dashb-atlas-data.cern.ch/dashboard/request.py/site?statsInterval=4&name=LYON

  • Throughput
  • Errors


22 May 22h50

Transfers to RO-02-NIPNE_DATADISK have been failing. GGUS-Ticket 36728 has been created.

Otherwise, transfers are going well except for BEIJING.

22 May 14h50

One file assigned to CPPM has a source problem;

Received error message: SOURCE error during PREPARATION phase: [REQUEST_TIMEOUT] failed to prepare source file in 180 seconds

with srm://marsedpm.in2p3.fr:8446/srm/managerv2?SFN=/dpm/in2p3.fr/home/atlas/atlasdatadisk/ccrc08_run2/AOD/ccrc08_run2.016765.physics_C.merge.AOD.o0_r0_t0/ccrc08_run2.016765.physics_C.merge.AOD.o0_r0_t0._0001__DQ2-1211460721

GGUS-Ticket 36709 has been created. https://gus.fzk.de/pages/ticket_details.php?ticket=36709

22 May 14h20

the T0->LYON export was migrated from T0 VOBOX to LYON VOBOX. Transfers T0->LYON should be monitored with the Production dashboard http://dashb-atlas-data.cern.ch/dashboard/request.py/site?name=LYON

22 May 13h05

Titi: Unfortunately there was an unscheduled network breakdown in our institute started from about 6:30 to 10 GMT.

22 May 12h40

Stephane switched back the certificate from Kors' certificate to Mario's.

22 May 10h29

starting 09:21:35, there are errors in transfers to RO-07-NIPNE_DATADISK in dashb.

 [FTS] FTS State [Failed] FTS Retries [1] Reason [DESTINATION error during PREPARATION phase: [CONNECTION] failed to contact on remote SRM [httpg://tbit00.nipne.ro:8446/srm/managerv2]. Givin' up after 3 tries] Source Host [ccsrm.in2p3.fr]

GGUS-Ticket 36698 created

22 May 09h40

According to Alexei, cron job for subscription to T2s does not run frequently during the night. That is why.

22 May 09h00

transfers T1-T2 resumed since 8h30. reaching 900MB/s in total.

numbers of assigned datasets to sites look better now.

Killed a MC data subscription to RO-07-NIPNE_MCDISK.

22 May 08h00

T0-T1 transfers are proceeding, No T1-T2 transfers to DATADISK since last night.

according to dq2.log, new subscriptions today (since 5.22 00:00) are queued only to BEIJING and RO-02-NIPNE, resulting in errors.

the status table does not look nice, I will check. http://panda.atlascomp.org/?mode=listFunctionalTests&testType=T1toT2s#LYON

apparently, no subscription to LAPP, CPPM, LPSC. TOKYO and LAL, who are assigned larger shares, have less subscriptions.

21 May

OVERVIEW.throughput.20080521.png LYON.throughput.20080521-1.png

21 May 23h30

There are many errors in transfers to NIPNE02

21 May 22h30

Stephane found a temporary solution for the LFC problem. It does not accept Mario's certificate, but does Kors' (thus no problem in T0-T1 transfers).

the dashb graphs show these transfers as of 19:xx (transfers done at 19:xx = 17:xx UTC, and registration done at around 22:30)

21 May 20h20

dashb shows transfers, which seem to be successful but with many registration errors, in the table (not in the graph). Looking into the details, file states are 'ATTEMPT_DONE' with 'HOLD_FAILED_REGISTRATION'


the time on ftsmonitor is UTC.

21 May 19h30

Finally 19 more subscriptions appeared in the dq2.log.

  • ccrc08_run2.016731.physics_D.merge.AOD.o0_r0_t0 (2 files) to BEIJING-LCG2_DATADISK and GRIF-SACLAY_DATADISK
  • ccrc08_run2.016730.physics_B.merge.AOD.o0_r0_t0 (2 files) to BEIJING-LCG2_DATADISK and GRIF-SACLAY_DATADISK
  • ccrc08_run2.016730.physics_D.merge.AOD.o0_r0_t0 (2 files) to BEIJING-LCG2_DATADISK and GRIF-SACLAY_DATADISK

and so on.

In the dq2.log, the files got FileTransferring, VALIDATED, FileCopied, but then, there are errors

FileTransferErrorMessage : reason = [FTS] FTS State [Failed] FTS Retries [1] Reason [TRANSFER error during TRANSFER phase: [TRANSFER_TIMEOUT] globus_gass_copy_register_url_to_url: Connection timed out]
FileRegisterErrorMessage : reason = LFC exception [Cannot connect to LFC [lfc://lfc-prod.in2p3.fr:/grid/atlas]]
21 May 18h20 

Around 17h30 transfers resumed. Rate for 17h40-18h20: IN2P3-CC_DATADISK: 158 MB/s, IN2P3-CC_DATATAPE: 37 MB/s

no subscriptions/transfers T1-T2 since the very first dataset ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 (vuid = 6403bd5a-5a71-4732-9a0a-b22b56aef106) to GRIF-LAL_DATADISK and TOKYO-LCG2_DATADISK. Transfers to Tokyo has finished. LAL is still Inactive.

21 May 16h40
Since around 16:40 T0-T1 transfers stopped. There are many errors.

Error caught in srm::getSrmUser.Error creating statement, 
Oracle code: 12537ORA-12537: TNS:connection closed] 
Source Host [srm-atlas.cern.ch]
OVERVIEW.num file xs error.14400.20080521-1300-1700.png
LYON.num file xs error.14400.20080521-1300-1700.png

21 May 13h30
T0-T1 Transfers started at around 13h30. The overall throughput from T0 is over 1000MB/s. Lyon is receiving its share at 100-200 MB/s (verying with time). the average rate is about 40MB/s to IN2P3-CC_DATADISK and 140MB/s to IN2P3-CC_DATATAPE according to dashb http://dashb-atlas-data-tier0.cern.ch/dashboard/request.py/site?name=LYON.


T1-T2 Transfers started at around 15h10. http://lcg2.in2p3.fr/wiki/images/20080521-1530-LYONT2.throughput.14400.png

  • from dq2.log:
    • 2008-05-21 15:00: SubscriptionQueued for dataset ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 (vuid = 6403bd5a-5a71-4732-9a0a-b22b56aef106) to GRIF-LAL_DATADISK and TOKYO-LCG2_DATADISK
    • 2008-05-21 15:00: FileTransferring: 3 files of the dataset ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 (fsize = 3600000000 each) for both TOKYO-LCG2_DATADISK and GRIF-LAL_DATADISK
    • 2008-05-21 15:03: VALIDATED: 3 files of dataset ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 at srm://lcg-se01.icepp.jp
    • 2008-05-21 15:03: FileCopied: 3 files of dataset ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 at TOKYO-LCG2_DATADISK
    • 2008-05-21 15:03: FileDone: 3 files of dataset ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 at TOKYO-LCG2_DATADISK
    • 2008-05-21 15:05: SubscriptionComplete: vuid = 6403bd5a-5a71-4732-9a0a-b22b56aef106 : site = TOKYO-LCG2_DATADISK : dsn = ccrc08_run2.016731.physics_A.merge.AOD.o0_r0_t0 : version = 1
  • FTS channels for LAL are 'Inactive' for 'Pb clim LAL'

T0-T1-T2 + T1-T1 transfer tests (week4)


ADC Oper 22 May (slide 8 - 10) http://indico.cern.ch/materialDisplay.py?contribId=3&materialId=slides&confId=34556