# Presentation: 753474

## US ATLAS Tier 1 Facility

- Rich Baker
- Deputy Director
- US ATLAS Computing Facilities
- October 26, 2000

## Existing Facility

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Slide 3

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Full Scale Facility (1)

- CPU: 209,000 SpecInt95
- Commodity Pentium/Linux
- Estimated 640 Dual Processor Nodes
- Online Storage: 365 TB Disk
- High Performance Storage Area Network
- Baseline: Fibre Channel Raid Array

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Full Scale Facility (2)

- Tertiary Storage: 2 PB Tape Library
- Baseline: HPSS, STK Media & Tape Drives
- 75% Event Summary Data
- 25% Simulation, Analysis Objects, Local Data
- “Raw” I/O Rate: 400 MB/second, 12.5 PB/year
- Exploit Use Patterns to Maximize Efficiency
- Random Access to AOD - Always on Disk
- Managed Access to ESD - Grid SW?  Custom SW?

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Timeline Overview

- Prototype – FY ‘01 & FY ‘02
- Initial Development & Test, 1% to 2% scale
- Establish Facility Independent from RCF
- Lessons Learned from RCF Experience
- System Tests – FY ‘03 & FY ‘04
- Large Scale System Tests, 5% to 10% scale
- Support Growing Tier 2 Network
- Operation – FY ‘05, FY ‘06 & beyond
- Full Scale System Operation, 20% (‘05) to 100% (‘06)

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Tier 1 Facility Capacity

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Slide 8

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Estimation Methods - Hardware (1)

- Use Recent RCF Purchases as Cost Baseline
- Moore’s Law Scaling for Commodity Components (CPU, Disk, Tape)
- STK Tape Drives: Constant Cost per Drive, Double I/O Capacity Every 2 Years
- Similar Constant Cost Projections for High Performance Data Mover Nodes
- $40K per HPSS Mover Node
- $30K per SAN Control Node

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Estimation Methods - Hardware (2)

- Local Area Network: 8% of Disk+CPU Cost plus $20K per HPSS Mover
- Firewall/WAN Hardware: 25% of LAN Cost
- Interactive Nodes
- 2 Linux Nodes Purchased per Year
- Maintain One Sun/Solaris Node
- “General Purpose” Nodes
- 21 Currently for RCF - Estimate 25 for ATLAS

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Share Site License Costs with RCF
HPSS: 50% of $200K by 2005
LSF: 50% of $65K Starting 2002
Veritas: $5K per SAN Control Node
Or Other SW Choice
Most Other SW License Costs Can Only be Estimated - Total $97K in 2005
Good Estimate Based on Actual RCF Costs to Support Operational Facility & Development

- HPSS: 50% of $200K by 2005
- LSF: 50% of $65K Starting 2002
- Veritas: $5K per SAN Control Node
- Or Other SW Choice
- Most Other SW License Costs Can Only be Estimated - Total $97K in 2005
- Good Estimate Based on Actual RCF Costs to Support Operational Facility & Development

- Estimation Methods - Software

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Tier 1 Budget Numbers (k$)

- Grid & WAN Personnel (5FTE) Not Counted
- HPSS License Double Counted

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Slide 13

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Tier 1 Material Numbers (k$)

- HPSS License Included in HPSS Column
- Volume Manager SW (Veritas) Included in Disk Column
- “Other” Includes Power, Videoconference, Supplies

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00

## Slide 15

- US ATLAS Tier 1 Facility - Rich Baker

- 10/26/00