# Presentation: 403161

## Computing at home: How are you doing ?What are the most pressing problems ?

- Listen to talks trying to find the answers, then ask questions
- INTRODUCTION  (Stefano Belforte)                          5min
- SAM                        (Rick St.Denis)                            15min
- Is that what we want (open discussion)                  20min
- GRID POLITICS    (Frank Wuerthwein)                     10min
- Can not make exahustive discussion here, nor can listen to everybody, nor claim to have the full feedback now
- At least make sure everybody knows what is happening
- Provide some immediate feedback now, but mostly in the following days/weeks (e.g. via e-mail to ICRB) to offline/DH leaders to help them finalize SAM specs and prioritities
- I will be glad to collate feedbacks in a coherent frame

- Stefano Belforte - INFN Trieste

- May 21, 2003

## Computing at home: the scenery

- CDF has as much CPU/disk as money can buy (and people manage)
- CAF:  more then x10 the computing we thought 2 years ago
- Two telltale signals:
-  30% of FNAL CAF is non-FNAL-owned
-  dCAFs sprouting all around
- Interpretation: time to expand offsite
- Next frontier software: SAM + GRID (JIM)
- SAM: transparent access to FNAL data from everywhere
-  AND data import to FNAL store (offsite MC)
- GRID : merge with “LHC”, solve Authorization w/o Kerberos5
- Once remote computing is technically feasible.. Politcs :
- Is it needed ? Or simply welcome ?
- Is it a contribution ? Or a cost ?

- Stefano Belforte - INFN Trieste

- May 21, 2003

## Besides softwarethe network !!

- Kindly got 2 slides from Phil Demar
- (CD networking group)

- Stefano Belforte - INFN Trieste

- May 21, 2003

## Current Status: FNAL WAN Capabilities

- Off-Site network link currently = 622Mb/s (OC12):
- Link provided by ESnet (DOE network for the National Labs)
- ESnet link upgraded from 155Mb/s (OC3) in December, 2002
- Dependent on DOE approval & funding for next upgrade (2.4 Gb/s)
- Unclear when that upgrade may occur
- Second off-site OC3 (MREN link) now only used for redundancy
- Outbound traffic (blue line)
- 	increased 200% in 2002:
- Daily outbound peaks
- 	(magenta line) > 200 Mb/s
- Last week’s outbound traffic
- 	breakdown (by experiment)

- slide by Phil Demar (CD)

- May 21, 2003

## Plans for StarLight Dark Fiber

- FNAL working on procuring dark fiber to StarLight:
- StarLight =  International optical network exchange pt. in Chicago
- Many US & International research networks connect to StarLight
- StarLight dark fiber procurement (hopefully...) completed in this FY
- Dark fiber offers potential for very high, scalable bandwidth
- Bandwidth limited only by optical (DWDM) equipment supporting it
- Initial DWDM configuration likely to be one or two 2.4 Gb/s λ’s
- Additional λ’s could be added with additional DWDM modules
- ESnet link to remain FNAL’s production network path
- Will pursue ESnet link upgrades as WAN loads increase
- Starlight Project’s purpose is WAN system / network research
- StarLight link could be used for excess (overflow) production traffic
- StarLight link could also support new, next generation applications requiring higher bandwidth than ESnet provides

- slide by Phil Demar (CD)

- May 21, 2003