Commitment of TOKYO- -LCG2 to LCG2 to Commitment of TOKYO Atlas - - PowerPoint PPT Presentation

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Commitment of TOKYO- -LCG2 to LCG2 to Commitment of TOKYO Atlas Computing System Atlas Computing System Commissioning Commissioning Hiroshi Sakamoto Hiroshi Sakamoto ICEPP, University of Tokyo ICEPP, University of Tokyo Commitment of

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Commitment of TOKYO Commitment of TOKYO-

LCG2 to

LCG2 to Atlas Computing System Atlas Computing System Commissioning Commissioning

Hiroshi Sakamoto Hiroshi Sakamoto ICEPP, University of Tokyo ICEPP, University of Tokyo

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Contents Contents

TOKYO TOKYO-

LCG2 Status

LCG2 Status

WLCG MoU WLCG MoU Present Computing Resources Present Computing Resources

SC4 Commitment SC4 Commitment

Atlas Computing System Commissioning Atlas Computing System Commissioning Connectivity Consideration Connectivity Consideration Tier1 Association Tier1 Association Short Term Plan Short Term Plan

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

TOKYO TOKYO-

LCG2 Status

LCG2 Status

WLCG WLCG-

MoU (CERN

MoU (CERN-

Tokyo) Signed.

Tokyo) Signed.

March 31st, President of Univ. Tokyo. March 31st, President of Univ. Tokyo. April 10th, Chief Scientific Officer of CERN. April 10th, Chief Scientific Officer of CERN.

Resource Plan Resource Plan

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Computing Computing Resources for SC4 Resources for SC4

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

HP blade server HP blade server

HP HP ProLiant ProLiant BL20p BL20p Xeon 2.8GHz Xeon 2.8GHz 2CPU/node 2CPU/node 1GB memory 1GB memory -

> now 2GB/node

> now 2GB/node SCSI 36GBx2, SCSI 36GBx2, hardware RAID1 hardware RAID1 3 GbE NIC 3 GbE NIC iLO iLO remote administration tool remote administration tool 8 blades/ Enclosure(6U) 8 blades/ Enclosure(6U) Total 108 blades(216 CPUs) in 3 racks Total 108 blades(216 CPUs) in 3 racks

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

SC4 Commitment SC4 Commitment

LCG LCG-

SC4/Atlas CSC

SC4/Atlas CSC

Prepare for physics analysis Prepare for physics analysis Based on the existing circumstances in 2006 Based on the existing circumstances in 2006

Requirements from Atlas Japan Requirements from Atlas Japan

Establish a sufficient analysis infrastructure Establish a sufficient analysis infrastructure based on the resources available in this based on the resources available in this period. period. Strong concern to access ESD samples, Strong concern to access ESD samples, especially just after the collision starts. especially just after the collision starts. Exercise should be performed beforehand. Exercise should be performed beforehand.

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Tiers of ATLAS Tiers of ATLAS

T1 T0 T2 T2 LFC

LFC

FTS Server T1 FTS Server T0 T1 ….

VO box VO box

LFC: local within ‘cloud’ All SEs SRM

Slide from Dario Barberis

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Atlas Computing System Atlas Computing System Commissioning Commissioning

Tier1 Tier1-

Tier2 Association

Tier2 Association

Assuming that Tier1 has enough bandwidth to Assuming that Tier1 has enough bandwidth to each Tier2, and the RTT is short. each Tier2, and the RTT is short.

But, in reality But, in reality… …

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Connectivity Consideration Connectivity Consideration

Taipei Taipei -

Tokyo

Tokyo

Limited Bandwidth (620Mbps) Limited Bandwidth (620Mbps) Small Round Trip Time (40ms) Small Round Trip Time (40ms)

Europe Europe -

Tokyo

Tokyo

High Bandwidth (10Gbps) High Bandwidth (10Gbps) Large Round Trip Time (300ms) Large Round Trip Time (300ms)

Need further consideration Need further consideration

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Tier1 Tier1-

Tier2 Relation

Tier2 Relation

Operation Operation

Same time zone ~ APROC Same time zone ~ APROC

Local File Catalog Local File Catalog

Small RTT is required Small RTT is required

File Transfer : Experimental Data File Transfer : Experimental Data

Full AOD Full AOD

Static transmission. Well scheduled. Bandwidth required. Static transmission. Well scheduled. Bandwidth required.

ESD samples ESD samples

Dynamical access pattern. Transfer on demand. Large Dynamical access pattern. Transfer on demand. Large bandwidth and small RTT. bandwidth and small RTT.

File Transfer : MC Simulation Data File Transfer : MC Simulation Data

Static transmission. Well scheduled. Bandwidth Static transmission. Well scheduled. Bandwidth required. required.

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Tier1 Association Tier1 Association

Asia Asia-

Pacific Region

Pacific Region

Only one Tier1 in this region Only one Tier1 in this region Backup Tier1 in North America/Europe Backup Tier1 in North America/Europe

Connection to multiple Tier1s Connection to multiple Tier1s

Data transfer at maximum throughput Data transfer at maximum throughput Multiple FTS Channels Multiple FTS Channels (1) Limited BW, but Small RTT (1) Limited BW, but Small RTT (2) Wide BW, but Large RTT (2) Wide BW, but Large RTT

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Short term plan Short term plan

Service Challenge 4: Service Challenge 4:

Standard Atlas CSC with IN2P3 Tier1 Standard Atlas CSC with IN2P3 Tier1

File Catalog at large RTT? File Catalog at large RTT?

Distributed Analysis R&D with ASGC Tier1 Distributed Analysis R&D with ASGC Tier1

FTS channel. File catalog FTS channel. File catalog

Analysis on demand. Analysis on demand.

Improve Regional Network Connectivity Improve Regional Network Connectivity

Need more efforts. Need more efforts.

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ

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Commitment of Tokyo-lcg2 to atlas csc / H. Sakamoto / ISGC2006 TAIPEI

Summary Summary

ATLAS CSC ATLAS CSC

Application to Asia Application to Asia-

Pacific Region needs special

Pacific Region needs special consideration in the existing environment. consideration in the existing environment.

Our challenges Our challenges

IN2P3 Tier1 : Verify that Atlas CSC model works even IN2P3 Tier1 : Verify that Atlas CSC model works even in large RTT connection. in large RTT connection. ASGC Tier1 : Special program utilizing full capacity of ASGC Tier1 : Special program utilizing full capacity of limited BW for data transmission on demand. limited BW for data transmission on demand.

Support and understanding by Tier1s and Atlas Support and understanding by Tier1s and Atlas are essential. are essential. Collaboration with other AP Tier2s is also Collaboration with other AP Tier2s is also important to share experiences. important to share experiences.

וֹכּמּף ףץ٪ّ٠מּَِ ٩٭۶ףוֹ٭٩ץף ێ ۖףףףِِ