KISTI & Belle KISTI & Belle experimentexperiment

Eunil WonEunil Won

Korea UniversityKorea University

On behalf of the Belle On behalf of the Belle CollaborationCollaboration

KEKB KEKB : the highest luminosity in the world: the highest luminosity in the world

3.5 GeV e3.5 GeV e++ 8.0 GeV e8.0 GeV e--

ee++ee-- (4S)(4S)

withwith = 0.425= 0.425

22 mrad crossing angle22 mrad crossing angle

Located in Tsukuba, Japan

Lpeak = (1.581034)/cm2/sec > 1M BB pairs/dayintegrated L = 467 /fb

_

Belle detector

R&Ds in KU - MC productionR&Ds in KU - MC production

Network:Router: Layer 2/3 supportsMy lab-KOREN–TEIN2-CERNCPU: 10 P4 + 10 Woodcrest

UPS for 10 minutes

O(10)x2 clients via PXE in KU

O(1) TB raids

MC production in Belle done on remote sites Diskless clusters (PXE boot) assembled by us (\700,000/box)

PostgreSQL server

R&Ds in KU - MC productionR&Ds in KU - MC production

Comments from KEK

>500M from remote institutes(twice more than KEK)

(e.g.) Korea with only 10 PCs Vienna with 14 PCs, Lausanne with 15 PCs

Shown at Nov. General Collaboration Meeting in KEK

Super B factory – in Super B factory – in preparationpreparation

It is a proposed upgrade for higher luminosity B production (L ~ 8x1035 cm-

1s-1) Experimental environment

• Trigger rate : > 10 kHz• Data size : ~ 300 kB/event• Readout : ~ 50 k channels

Not far from LHC environment !!! Fully pipelined readout is required

Super B factory – Trigger Super B factory – Trigger UpgradeUpgradeTriggers/readout become computing for next generation

experiments…

ADC/TDC

ADC/TDC

ADC/TDC

ADC/TDC

CPU PMC

Generic PMC

Generic PMC

COPPER : 9U VME for pipelined readoutRadisys-6315 : Intel PIII CPU 800 MHz w/ PMC Running linux OS Event formatting Data sparcification We need ~ O(1000) !

KU did:•Writing device driver for trigger PMC•Writing unpacker for TDC•Dynamic IP allocation (via vme_addr)

Belle Grid Deployment Belle Grid Deployment by KEby KEKK

• Belle did not participate grid community from Belle did not participate grid community from the beginningthe beginning

• But we joined since last two yearsBut we joined since last two years• Gridification of Belle lib. was done and under Gridification of Belle lib. was done and under

serious testsserious tests • LCG/EGEELCG/EGEE - Working with the computing center we created CA and have - Working with the computing center we created CA and have

applied for Belle VOapplied for Belle VO - We have installed LCG 2.7 at KEK and Nagoya is co-operati- We have installed LCG 2.7 at KEK and Nagoya is co-operati

ng.ng.

Status of Belle Grid Status of Belle Grid Deployment Deployment

Goal: Establish “Belle VO” on the World LCG InfrastructureGoal: Establish “Belle VO” on the World LCG Infrastructure– Utilize data on remote sites (No need to put back processed MC)Utilize data on remote sites (No need to put back processed MC)– Build framework to produce skims for new modes Build framework to produce skims for new modes – Connect with current KEK B system to open the “data” to remote users Connect with current KEK B system to open the “data” to remote users

securelysecurely What we’ve doneWhat we’ve done

– Install Belle library and data base in the Grid:gLite 3.0Install Belle library and data base in the Grid:gLite 3.0 2 KEK sites + AGSC(Taiwan)2 KEK sites + AGSC(Taiwan)– Process gsim sampleProcess gsim sample– Compile and test User_anaCompile and test User_ana-> -> Now we can do everything about Now we can do everything about

basf through grid job basf through grid job at test levelat test level

To do and discussTo do and discuss– Stabilize for heavy useStabilize for heavy use– Participate in MC productionParticipate in MC production– Handle raw data: Handle raw data:

Collect new skim proposal?Collect new skim proposal?– How to connect to How to connect to

current KEK B system current KEK B system to open for remote usersto open for remote users

UI

LCG-nodesCE SE

NFSWNs

LCG-nodesCE SE

NFSWNs

KEK ASGC/NCU@TW

BSFLibrary 62 CPU

2TB

Now on test Melbourne U. Krakow Nagoya U.

World LCG

197 CPU

What I would like to ask What I would like to ask KISTI?KISTI?

• A server for running PostgreSQL (root privilege)• A server for Belle library holder (root privilege)• O(100) computing (PXE bootable) clients• Storage : O(10) TB

For MC production

Grid on Belle• Human resources – someone knowledgeable on LCG and middle ware• O(100) computing boxes??

Initial Discussion w/ KEKInitial Discussion w/ KEKto eunil@hep.korea.ac.kr cc nkzw@post.kek.jp date Feb 22, 2007 11:09 AM subject Re: Belle Grid question Hi Eunil san,

According to Nakazawa-san, who is now mainly working on Belle Grid,he can take care of the technical things such as installation of Bellelibrary or submitting the jobs.

But, I think we have to ask you to do some communication with KEK experts(and maybe with KISTI people), especially on organization (or maybeI can say politics) issue.For example, to participate in Belle Grid, KISTI must be includedin Belle VO (virtual organization). So, you might need to makean application to KEK computer center.Of course, Nakazawa-san and I can help you, but since we are(or at least I am) not experts on Grid, we might not be so quick.

What I would like to ask What I would like to ask KISTI?KISTI?

• Connection to KU, down to Physics Department, (Room 425)• This might be OK with KOREN only?

Kreonet(2) to KU

Will this be possible???

What I would like to ask What I would like to ask KISTI?KISTI?