remote participation in physical experiments
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Remote Participation in physical experiments. Piroska Giese KFKI RMKI e-mail : [email protected] Yahoo ID : kfki_Piroska_Giese. Overview. Introductio n Remote Participation in Fusion Motivation, Methods, Tools Remote Participation Technical Measures Remote Data Access - PowerPoint PPT PresentationTRANSCRIPT
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 1
Remote ParticipationRemote Participation in in physical experiments physical experiments
Piroska Giese
KFKI RMKI e-mail: [email protected]
Yahoo ID: kfki_Piroska_Giese
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 2
OverviewOverview Introduction
Remote Participation in Fusion
Motivation, Methods, Tools
Remote Participation Technical Measures
1.Remote Data Access
2.Remote Computer Access
3.Telecommunications – Tele-Collaboration
4.Network Connectivity
5.Support and Documentation
Summary
Links and References
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 3
Nuclear FusionNuclear FusionThe world energy needs increase!
Nuclear Fusion is the energy producing process which takes place in the sun and stars (H is converted to He providing energy) For energy production on earth the most
suitable reaction occurs between two nuclei - Deuterium and Tritium.
The required temperature 100 Mill. deg. C fuels change its state from gas to PLASMA
Fuels - plentiful in earth Deuterium – can be extracted from water Tritium - doesn’t occur naturally it will be
manufactured from Lithium
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 4
TOKAMAK – TOKAMAK – ““toroidal magnetictoroidal magnetic
chamberchamber””
Parameters:Diameter 15 mHigh 12 mPlasma major radius 2.96 mFlat-top pulse length 20 sWight of the iron core 2800 tToroidal magnetic field 3.45 TPlasma current 3.2 –
4.8MAHeating power 25 MW
JEJETT--JJoint oint EEuropean uropean TTorusorus ((UKAEA – Culham, UK)UKAEA – Culham, UK)
the most successful experimental fusion device for controlled fusion reaction the plasma is heated in a toroidal vessel and confined away from the vessel walls by magnetic field
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 5
Inside the toroidal vacuum vessel, showing the Plasma (the high of the vessel: 4,2 m)
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 6
Pulse preparationonline/offline/remote
Control setup
Diagnostic setuponline
Countdownonline
Pulse25 / day
Data collection
online
1 GB / pulse
Intershot Analysis
onlineData Storage
4TB~55000 pulse
Data Displayonline/offline
Futher Analysis
offline
The The JET JET Pulse CyclePulse Cycle
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 7
WEB service Documentation Remote Participation
JET computer systemJET computer system
Data collection, storage Solaris system Storage Tek Silo 230TByte
Analysis Linux Cluster (Red Hat7.1)
56 nodes: Athlon/Intel proc.
13 Gflops/sec
JETNET local network
• office computers
• PC, Terminal & ICA Server
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 8
Remote Participation in Remote Participation in FusionFusion
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 9
Remote Participation in FusionRemote Participation in Fusion 1957 – Euratom Treaty creating “ Fusion Associations
– Traditionally high mobility and many inter-Association links
Pre-1998 RP is limited by both local politics and technology restrictions.
– However many examples of inter-collaborations and especially joint work with the JET Joint Undertaking
1999 establishment of EFDA. – Improved efficiency of resources required (human and material) .
– Modern techniques make RP more viable.
1999/2000/2001 “ User Meetings” define RP needs for EFDA-JET
2000/2001 Creation of EFDA-JET RP Technical Project– Scientific exploitation of JET jointly by Task Forces from the more than 20
EFDA Associate laboratories.
– Strong support by the JET “Operator” (UKAEA Culham Division) 2000 - Association EEUURATOM/HAS RATOM/HAS (KFK(KFKi i RMKI, KFKI AEKIRMKI, KFKI AEKI, , BMGE)BMGE)
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 10
European Magnetic Fusion CentresEuropean Magnetic Fusion CentresNew
New
New(Bucharest)
(Budapest)
(Prague)
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 11
RP - MotivationRP - Motivation Essential for a viable JET Scientific programme within the new
framework.
Immediate needs driven by USER REQUESTS and/or existing utilities
Strong political backing – Busquin, Mitsos and EFDA – « prototype European Research Area » The subject is « à la mode »
Desire to reduce Mission Costs
Desire to create closer « European Fusion Community »
Desire to make more efficient use of existing resources and facilities – Investment Budget in Fusion >> Operational and manpower resources.
Counter ArgumentsCounter Arguments Undermines Association Autonomy Reduces human contact/interaction Resources in Fusion are already too widely stretched (fear of closure of
local facilities in favour of RP) Requires too much « support »
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 12
RP MethodsRP Methods
The RP project includes five subjects:The RP project includes five subjects:
1. Remote Data Access – transfer of data across the web
2. Remote Computer Access – log in remotely to computers
3. Telecommunication – Office, Control Rooms and Seminars
4. Network Connectivity - best use of European Networks
5. Support and Documentation
No ready-to-use solutionNo ready-to-use solution
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 13
RP Working MethodsRP Working Methods
Feasibility Studies Specifications Purchase and Commissioning Organisation of Support.
• CComprehensive Data Base established of omprehensive Data Base established of “desires”.“desires”.
• Work at JET supported by the UKAEA-OperatorWork at JET supported by the UKAEA-Operator
• Specific Work in the Associations by Specific Work in the Associations by “Notification" contracts.“Notification" contracts.
• Formation of topical “Study Groups” for Formation of topical “Study Groups” for particular issues.particular issues.
The subjects are handled by four The subjects are handled by four working methods:working methods:
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 14
RP ToolsRP Tools
Aim: “Fusion-Standard” RP ToolkitsAim: “Fusion-Standard” RP Toolkits
Requirements: platform-independent or at least multi-platform
tools Shareware or freeware solutions with source code
access are strongly preferred Internet-based Communications Compatibility as far as possible with existing
infrastructures (priority JET)
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 15
RP Technical ProjectRP Technical ProjectStarted in 2000Started in 2000
• Two technical coordinators:– Volker Schmidt, Conzorcio RFX, Euratom-ENEA sulla
fusione
I-35127 Padova, Italy
e-mail: [email protected] Yahoo Messenger ID:RFX_Volker_Schmidt
– John A. How, Euratom-CEA, DRFC, CEA-Cadarache F-13108 Saint-Paul-Lez-Durance, France
e-mail: [email protected]
Yahoo Messenger ID: DRFC_John_How
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 16
Remote Participation Remote Participation
Technical MeasuresTechnical Measures
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 17
1. Remote Data access - RDA1. Remote Data access - RDA
Requires Client Access Program and support Unix, PC, Mac, Linux
Requires reasonable network bandwidth typical data transfers are 2Mb/s = 250kbaud/s = 16secs for 1Meg of 32bit data
Requires efficient Central data server (and tape recall)
Desirable to have some local data cache to avoid transfer of the same signal many times
The JET-RDA client/server system makes The JET-RDA client/server system makes JET's scientific databases available over JET's scientific databases available over the Internet.the Internet.
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 18
RDA structure - overviewRDA structure - overview
An extension of IIS web server running on Windows Uses HTTP and NetCDF Requires username/password
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 19
2. Remote Computer access - RCA2. Remote Computer access - RCA
Remote log on to a distant computerRemote log on to a distant computer.. Complements RDA approach. Only the screen is sent across the network, not the data.
Widely used for many yearsWidely used for many years. EFDA JET Policy - Remote Collaborators can EFDA JET Policy - Remote Collaborators can
have the same remote platform as within a have the same remote platform as within a JET Office.JET Office. internal firewalls, protocols and passwords control
Security issues are Security issues are the the paramount aspect in paramount aspect in the chosen solutionthe chosen solution(s).(s).
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 20
RCA ImlementationRCA Imlementation
There are a number of Windows server running CITRIX Metaframe
Remote clients use CITRIX ICA client (Independent Computer Architecture)– Available for most platform– High performance over slow links user configuration is required
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 21
RCA Two-step AuthenticationTwo-step Authentication
1. Remote CITRIX ICA client sets up the contact to CITRIX Metaframe server JET remote access username/password
2. SecurID token card at the firewall PIN code+SecurID card “token”
Logon to JET computers
- Office PC network (Win2K) - Internal Web - Linux cluster - Solaris system
JET local Username/password
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 22
RCA – RCA – why is neededwhy is needed??
Remote execution of interactive tasks– Sun/Solaris (session leader tools, monitoring, diagnostics) – JAC (Submission of simulation/analysis codes)– Office PC systems (shared task force drives, staff on
mission)– (ultimately) active remote control of equipments
Access to internal JET web Technical documentation, Shift rosters, Inventories, LOG
files, etc
Remote system administration
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 23
3. Telecommunications Scenarios3. Telecommunications ScenariosTele-collaboration includes a wide range of arrangements:
Desktop dialogue: two scientists that want to discuss
and share interactively documents on their desktops Office-based Meetings: small groups communicate
via audio and, possibly live video, interactively sharing documents on their desktop
Broadcast meeting: broadcasting only, without remote interaction – e.g. Science Meeting
Fully interactive “Multi-centre Meetings”: participants in meeting rooms at different sites
JET Task Force Meetings, Formal presentations Remote Control Room Extension:
– possibility to interact with the JET control room in real time– combination of teleconferencing, broadcasting, and remote
computer access
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 24
Tele-collaboration Toolkit (1)Tele-collaboration Toolkit (1)Virtual Rooms Videoconferencing SystemVirtual Rooms Videoconferencing System
- Audio & Video
- Caltech development for LHC community
• Multi-platform public domain software
(Windows, Unix, Linux, non-interactive version for MacOS )
• based on the concept of Virtual Meeting Rooms
• based on Mbone tools: VIC and RAT
• interoperable with H.323 videoconferencing system
(MS “NetMeeting”, Intel “Internet Video Phone”)
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 25
VRVS Model VRVS Model - - ImplementationImplementation
Network Layer (TCP/IP)Network Layer (TCP/IP)
Qo
SQ
oS
VRVS Reflectors (Unicast/Multicast)VRVS Reflectors (Unicast/Multicast)
Real Time Protocol (RTP/RTCP)Real Time Protocol (RTP/RTCP)
Mbone Mbone ToolsTools
(vic, vat/rat,..)(vic, vat/rat,..)
QuickTimeQuickTime
V4.0H.323H.323 MPEGMPEG
OthersOthers
????
Co
llabo
rativ
e
Co
llabo
rativ
e
Ap
plic
atio
ns
Ap
plic
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ns
VRVS Web User InterfaceVRVS Web User Interface
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 26
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 27
VRVS ReflectorsVRVS Reflectors
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 28
Sceduler in VRVSSceduler in VRVS
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 29
Tele-collaboration Toolkit (2)Tele-collaboration Toolkit (2)
VVirtual irtual NNetwork etwork CComputingomputing
Interactive Shared Desktop Tool VNCInteractive Shared Desktop Tool VNCResult of a collaboration between Oracle and Olivetti developed by AT&T
- VNCserver - VNCviewer client - Multi-platform server, Viewer client is very small
VNC is a cheap alternative to CITRIX ICA Can be used to logon to JAC and Solaris system Can be used either from a WEB browser or a standalone client utility Secure ID authentication has to be implemented by the user
Normally VNC is used to provide users with remote access to
their desktop. At JET is used to provide full X access by
creating virtual X terminal via inetd service on a Solaris
system
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 30
JTV – JET TelevisionJTV – JET TelevisionOn VNC based Web streamingOn VNC based Web streaming
• JTV – web browser/Java based image broadcast– 10 channels of live control room data– one channel low webcam view of the Session leader– one channel for the broadcast of sliedes for conference
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 31
JTV Real-Time Screen Broadcast UtilityJTV Real-Time Screen Broadcast Utility
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 32
Tele-collaboration Toolkit (3)Tele-collaboration Toolkit (3) Real-time dialog CHATReal-time dialog CHATuseful as self-documenting toolessential addition to teleconference during set-up
public server
replaces telephone calls
Spaniel Chat private server secure Control room communication
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 33
4. 4. Network ConnectivityNetwork Connectivity Sufficient network connectivity is required
throughput, response time, reliability All European fusion laboratories are connected through
TEN-155 or GEANT 2.5GB/s But some local connections are presently insufficient
Network Monitoring is essentialNetwork Monitoring is essential A small study group (monitoring web sites) Used desktop tools
•Pingplotter - traceroute, store, accumulate, re-plot data•Qcheck - testing of network performance
response time, throughput, availability lost of packets for TCP, UDP, SPX, IPX Future IssuesFuture Issues
Unified Network Security Internet Traffic Priorities
Virtual Private Network Virtual Private Network (VPN)(VPN) ??
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 34
5. Support and Documentation5. Support and Documentation
Central Support at JET– Supports Task Force programme– Includes Local JET Facility Documentation on Internal Web– Excellent Europe Wide EFDA-JET USERS WEB (restricted access)
Includes major section on “Remote participation”
In the Associations • Active Users Group and Technical Contact Persons for RP• Support Teams in most laboratories • Some local documentation
Europe-Wide Organisation– Two Technical Coordinators for the EFDA-JET RP project– Central EFDA and ITER public web sites http://www.efda.org/
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 35
SummarySummary
References, LinksReferences, Links
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 36
SummarySummary“Shared-facility” mode since January 2000
The « Remote Participation » Technical Infrastructure for European Fusion Research has been organised
• JET is operating under the new shared-exploitation scheme
• approximately 300 scientists regularly use the RP
techniques for JET Work
• Active Users Group and network of
Technical Contact Persons
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 37
Summary Summary (cont)(cont)
• Many physicists are only periodic visitors to the JET site
• Support of experiment sessions is shared between on-site and off-site staff
• Data analysis is run (remotely) on JET-based computers and on computers at the partner laboratories
• JET operation can be followed by remote observers
• Scientists make use of teleconferencing in the widest sense
Remote Participation infrastructure does not replace the physical presence on the JET siteNo remote experiment control
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 38
SummarySummary (cont)(cont)
The joint scientific exploitation of the JET Facilities could serve as a blueprint for the future shared exploitation of several other large experiments• JET EP (Extended Performance) Activities
• ITER the first fusion device to produce thermal energy
International Collaboration: Canada, Europe, Japan, Russia
• Experiment-based or scientific collaborations between other fusion research sites in Europe
Universities, other research organisations
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 39
References and References and LLinksinks
The Euroatom Treaty of 1957 http://www.euroli.net/sectors/1/A/1957 http://www.fusion-eur.org/fusion
J. Pamela, JET under EFDA: Organisation and resent results 21st Symposium on Fusion Technology, Madrid, Spain, 11-15 September 2000
3rd IAEA Technical Committee Meeting on Control, Data Acquisition, and Remote Participation for Fusion Research Padua TCM Conference, Italy, July 2001
http://tcm2001.igi.pd.cnr.it/
April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 40
LLinks and Referencesinks and References JET: http://www.jet.efda.org/ EFDA: http://www.efda.org/ UKAEA Culham http://www.fusion.org.uk/ ITER: http://www.iter.org/ Citrix: http://www.citrix.com/ VRVS: http://www.vrvs.org/ VIC: http://www-nrg.ee.lbl.gov/vic/ RAT: http://wwwmice.cs.ucl.ac.uk/multimedia/software/rat/ VNC: http://www.uk.research.att.com/vnc/index.html Pingplotter: http://www.nessoft.com/pingplotter/ Yahoo Messenger: http://messenger.yahoo.com/ Spaniel chat: http://www.searchspaniel.com