Site Report
Roberto Gomezel
INFN - Trieste
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
Outline of Presentation
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Introduction
Environment today
Services
Network
AFS
INFN-GRID project
Conclusions
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
2
Computing Environment
• There have not been great changes in computing
environment since last october
• As commercial unix boxes are getting older, they are
replaced by Linux boxes for all main services but AFS file
server
• Backup devices: DLT , AIT and Exabyte Mammoth-2
3.2
Other
30.7
Windows 9x
15.6
Windows NT
18.2
Linux
16.5
MAC OS
IBM-AIX 0.9
3.2
SUN
HP-UX 1.9
5.4
Digital Unix
3.1
VMS
0
5
10
15
20
25
30
35
Percentage
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
3
Desktop
• More and more implemented using PCs running Linux
• Automatic installation using Kickstart
• Metaframe Citrix or Vmware offer good tools to reduce the
need to install Windows OS on PCs for applications
generally requested from physicists
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
4
INFN network
• LAN backbone network mainly based on Gigabit Ethernet
– Layer 2 and 3 switching
– No layer 4 switching
• The INFN WAN network is completely integrated into a nation-wide
infrastructure providing a backbone connectivity at 155 Mbps called
GARR-B (Broad band network service for the Italian Academic and
Research community)
• A 622 Mbps link from Milan to New York is running for both
commodity and research traffic to USA and global internet
• The GARR-B Network is interconnected to the European research
network via the TEN155 link but moving to new GEANT connection
• The next step for the GARR network infrastructure is moving to the
GARR-G network (A Gigabit infrastructure based on WDM)
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
5
How we share data today
• INFN utilizes heavily AFS services to share data and
software throughout sites and within local site
• In spite of the uncertainty about the future of AFS, many
sites and experiments keep relying upon AFS to share data
because it is a handy and very useful tool for them
• There is an increasing interest in NAS and SAN
architecture in order to rule over the complexity of our
local environment and to improve the reliability of data
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
6
WEB,E-mail etc.
• Many sites are moving all main services on Linux boxes, making them
independent one from another:
– WEB server
– Mail gateway
– DNS
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
7
Compute Farm
• Farms have mainly been running on linux systems and
their deployment is ever growing
• So far we have not any farm on NT
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
8
INFN-GRID project
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An INFN Grid Workshop took place on 9th-10th of April in
Catania
Work-plan divided in 5 packages complementary and in
support of DATAGRID project
– Globus Toolkit evaluation/integration (INFN-GRID release 1.3):
• Security and Information Service(GSI), Resource management,data
management (Globus FTP)
• Link: www.infn.it/globus
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Workload management WP: www.infn.it/workload-grid
Fabric Management WP: www.infn.it/fabric-grid
Testbed WP: www.infn.it/testbed-grid
Network WP: www.infn.it/netgrid
Data management and HEP applications
Many LHC experiments involved: ALICE, ATLAS, CMS,
LHCB and many people coming from computing services
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
9
Conclusions
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Computing facilities are moving fast to PCs running Linux
A working group has just finished to test Windows 2000 environment; INFN
Computing Committee decided not to implement a nation-wide Windows 2000
domain (w2k.infn)
Commercial unix is stable but it is diminishing while Linux is getting the better
of it
Ever-growing role of NAS in many sites connected to Gigabit switch in order
to make data available to different platform regardless of the operating system
The need of an efficient distributed file system is ever growing. So it is
necessary to guarantee its functionality and efficiency.
GRID is an important project for INFN
All sites deployed or have been deploying Gigabit Ethernet as backbone for
their LAN infrastructure, at the same time they are increasing the access
bandwidth for WAN
LAL - Orsay
April 23-27 2001
Site Report – R.Gomezel
Istituto Nazionale
di Fisica Nucleare
Italy
10