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Simulation Recontruction Batch Data analysis Interative analysis. OffLine Physics Computing. High data volumes (disks, tapes, tape robots) Standard I/O packages Little file sharing Fortran. Applications Characteristics. SHIFT Motivations. Exploit cheap RISC technology spin-off

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Presentation Transcript
offline physics computing
Simulation

Recontruction

Batch Data analysis

Interative analysis

OffLine PhysicsComputing
shift motivations
SHIFT Motivations
  • Exploit cheap RISC technology spin-off
  • Exploit cheap SCSI technology
  • Exploit HOPE success
  • Answer to HEP computing always growing needs
shift goals
Mainframe quality

Scalable (down & up)

Heterogeneous (open)

Integrated

Minimal (portable) SW development

SHIFT Goals
shift model
SHIFT Model

CPU

Server

CPU

Server

CPU

Server

CPU

Server

CPU

Server

CPU

Server

Disk

Server

Disk

Server

High Speed Interconnect

Tape

Server

Tape

Server

Tape

Server

shift software1
Disk Pool Manager

Remote Tape Copy

Clustered Batch Queues

Remote File I/O

Integration with I/O packages

Unix Tape Control System

Operator Interface

Monitoring

SHIFT Software
cpu usage
CPU usage

Week 1-42 1992

shift stage statistics
SHIFT Stagestatistics

Week 1-43 1992

Gigabytes

SUN/STK stage data/drive/week : 48 GB

tape mount statistics
Tape mountstatistics

Week 1-43 1992

IBM Mounts/Drive/Week 215

SUN/STK Mounts/Drive/Week 253

conclusions
RISC + SCSI cost effective

CSF style easy to solve

(Remote) I/O is the major problem

Administration is complex

Really scalable

Conclusions