RAL Site report John Gordon ITD October 1999 [email protected].

12
RAL Site report John Gordon ITD October 1999 [email protected]

Transcript of RAL Site report John Gordon ITD October 1999 [email protected].

Page 1: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

RAL Site report

John Gordon

ITD

October 1999

[email protected]

Page 2: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Summary

• Linux Farm

• NT Farm (Monday)

• Suns for BaBar (Friday)

• Disk and Tape

• Security(Wednesday)

• Y2K

Page 3: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Linux

• Linux in use in most parts of CLRC

• Formed a user group to share experiences

• For central HEP systems more Linux cpu power than any other system

Page 4: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Hardware Configuration

• Twenty built to measure PCs– SuperMicro Dual Motherboard (with SCSI)

– Two Pentium II 450

– 10GB 5400rpm IDE HDA

– 256MB ECC memory

– 100Mbit Ethernet (tulip or Intel)

– Cheap graphics card

– Usually run without monitor - (BIOS must allow this)

Page 5: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Pounds per MHz

0

0.5

1

1.5

2

2.5

3

350MHz 400MHz 450MHz 500MHz

Dual PentiumSingle Pentium

Page 6: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.
Page 7: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Cloning

• Presently trivial but labour intensive– System image created by dd onto SCSI tape

– memory resident Linux system run from floppy (Tom’s Root and Boot)

– dd from tape to system disk

• Need to become smarter!– Kickstart?

– Drive Image (or similar software)?

– Any other suggestions?

Page 8: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Software

• Redhat 5.2 (kernel 2.0.36)

• ARLA (Free AFS Software)

• Generic NQS 5.4 - Free but not recommended - evaluating commercial products

• Mainly Fortran 77 - therefore use g77 compiler (egcs 1.1.1). Some C++

• autorpm for system updates

Page 9: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Summary

• Procurement Lessons

• System Monitoring

• Redhat 5.2 needed several changes

• Problems

Page 10: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Plans

• Need to move to Redhat 6.0 (or 6.1)

• Disk mirroring for interactive service?

• Next expansion will be late Autumn. Probably based on dual Pentium 600.

• Possibly further expansion early next year (probably Pentium)

• Further expansion 2H2000 when Multi-processor AMD Athlon systems will be extremely interesting possibility.

Page 11: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Disk

• Always growing

• 1.25TB general user disk servers

• 4.5TB for BaBar

• Plan to test an IDE server

Page 12: RAL Site report John Gordon ITD October 1999 J.C.Gordon@rl.ac.uk.

Tape

• 30TB IBM3590 in 3494 robot

• STK robot idle - considering upgrade to Eagle drives.


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