Global Science experiment Data hub Center

Oct. 13, 2014Seo-Young Noh

Status Report on Tier 1 in Korea

Status Reports on Tier 1 in Korea 2/14CERN-Korea Committee Meeting

Contents

1. Network Upgrade Plan

2. ALICE Tier 1 Operations

3. New CMS T3@KISTI

4. Conclusions

Network Upgrade Plan

Status Reports on Tier 1 in Korea 4/14CERN-Korea Committee Meeting

Network Upgrade Schedule

Funding has been secured with a lot of supports from Korean

government.

Only administrative procedures are left.

10Gbps upgrade will be completed by

March, 2015 at least before RUN2 starts

Dec.Oct. Mar. 2015 May

RUN2

Buffer(2 mon)

CompleteContract

Upgrade(3 mon)

2 mon

Tender Notification

Status Reports on Tier 1 in Korea 5/14CERN-Korea Committee Meeting

Planed 10Gbps Network

10Gbps Upgrade

As-Is:

To-Be:

2G KREONET2 + 2G SURNet

Dedicated Circuit 10G + 10G SURFnet

Contracted provider

will allocate the dedi-

cated circuit 10G.

ALICE Tier 1 Opera-tions

Status Reports on Tier 1 in Korea 7/14CERN-Korea Committee Meeting

Computing Jobs

KISTI Tier 1 is a reliable site in WLCG, stable and smooth running

~ 2500

~ 100 (Queued Agents)

Max 2,688 concurrent jobs(84 nodes x 32 cores, 10.5 HS06/core)= 28 kHS06

A few short incidents due to the main-tenance of undersea optical fibre link

More than 2M jobs were completed in last 6 months, already exceeded the total jobs in last

year (1.8 M jobs)

Status Reports on Tier 1 in Korea 8/14CERN-Korea Committee Meeting

Storage

■ Disk 1000TB XRootD based storage system (1 redirector + 9 storage nodes) Fulfilled the pledge for 2014

■ Tape 1040TB 8 tape drivers with 2GB/s

throughput 260 tapes (4TB each) 1500TB pledged for 2014, under

negotiation for price

< Storage Availability >

< Storage Usage >

< Tape Buffer Usage >

Tape1PB

Buffer Pool 600TBfor XRootD+GPFS

Buffer Pool (XRootD) Service Servers

GPFS/TSM Server(XRootD Tape)

Maintenance(new server installation)

Status Reports on Tier 1 in Korea 9/14CERN-Korea Committee Meeting

Site Availability/ Reliability

97% is the monthly target in ALICE On track for a stable and reliable site

100% reliable for last 6 months

Reliability Availability

Overall in 2014 Last 6 months Overall in 2014 Last 6 months

ALICE 99 % 100 % 98 % 99 %

Apr May Jun Jul Aug Sep

Reliability 100 100 100 100 100 100

Availability 100 99 99 99 100 100

■ Summary

■ Monthly Availability/ Reliability (%)

Participating in WLCG operation meeting twice a week, reporting operation related is-

sues

New CMS T3 @ KISTI

Status Reports on Tier 1 in Korea 11/14CERN-Korea Committee Meeting

Milestone

Letter from KCMS

MOUKCMS&KISTI

H/W Ready ComputingStorage

PhEDEx(Data Transmission)

Beta ServiceOpen

Meeting

Paper Work

System Work

Oct. 25, ‘13

Nov. 25 Feb. 5, ‘14

Mar. 17Feb. 28

Collaboration Board Meeting(Presentation)

Dec. 5

Letter to CMS(Joining)

Apr. 4

Associate MemberApproval

June. 2

RegistrationComplete

Dec. ‘13 Apr. ‘14 June-July July 31

MeetingSchedule Effected

A lot of administra-

tive email exchanges

unexpected

Status Reports on Tier 1 in Korea 12/14CERN-Korea Committee Meeting

Data Link Connections

All CMS Tier 1 have been connected, data transmission is in good shape

Linked to all CMS Tier 1

Linked to 3 Tier 2

82TB Transmitted

d

Good link quality for last 7 days

Outcomes from excellent collaborations among KISTI, KCMS, and CERN-CMS experts!

Conclusions

Status Reports on Tier 1 in Korea 14/14CERN-Korea Committee Meeting

Conclusions

■ A lot of efforts has been put to make a secure plan for network

upgrade to 10Gbps by Korean government. It will be completed

by March 2015.

■ KISTI Tier 1 has been running stable and fully functional, fulfilling

the requirements for Tier 1.

■ KISTI Tier 1 will prepare for receiving 10% of produced data from

ALICE during RUN2, roughly 1PB per year.

■ Excellent teamwork among KCMS, CERN-CMS and KISTI speeded

up the fast implementation of new CMS T3 at KISTI. It is the evi-

dence of our fruitful future collaborations.

Thank you