Access Tutorial 19 th APAN Meeting Bangkok, Thailand

2 Agenda Introduction to access grid technology Design consideration Installation Using access grid

Introduction to access grid technology

4 Introduction to access grid Access Grid is a –Group-to-Group collaborative environment –Provided live, immersive experience over a long distance –Sharing facilities between participants Web Browser Presentation Camera Controller Aplications The AG technology was developed by the Futures Laboratory at Argonne National Laboratory and is deployed by the NCSA PACI Alliance.

5 Definitions Access Grid (AG) –The infrastructure and software technologies Access Grid Node (AGN) –The ensemble of systems and services managed and scheduled as a coherent unit Access Grid Site (AGS) –A physical site that supports one or more AGNs

6 Benefits Enable group to group interaction and collaboration Improve the user experience –Go beyond teleconferencing –Provide a sense of presence –Support natural interaction Use quality but affordable digital IP based audio/video Enable complex multi-site visual and collaborative experiences Build on integrated grid services architecture

7 E - Learning

8 Remote Presentation

9 Video Conference

10 Massive Multisites conference

Design Consideration

12 Architecture

13 Hardware components Projectors Cameras Video Capture Cards Multi-head display Microphones Echo Canceller Speakers or Room audio system A set of PCs High speed network

14 RoomView Audience View Presenter View Camera Setup Display Video Capture

15 Audio Setup Network Echo Canceller Microphone Mixer Audio Digitizer

16 The Access Grid Toolkit (AGTk) AGTK is a set of software need to install and operate access grid –Venue Server –Venue Client –Video, Audio service application –Shared application components Latest version is AGTK 2.3 Information:

17 Architecture Node Service Service Service Manager Venue ClientVenue Server Service ManagerService Video or Audio Display

18 Virtual Venue Virtual Meeting Place on Intetrnet –Emulate the allocation of Meeting room in Conference Center –Support collaboration services Event distribution Session initiation Data and Control channel

19 Access Grid Meeting Video Multicast Channel Audio Multicast Channel VIC RAT VIC Virtual Venue

Personal Node Installation on Windows

21 Architecture of Personal Node Node Service Service Service ManagerVenue Client Venue Server

22 Required Software ActivePython – Python Interpreter wxPythonWIN32 – Python GUI AGTk (Access Grid Toolkits) Windows version AG certificate

23 Installation Order ActivePython wxPythonWIN32 AGTk

24 Active Python Installation Double click ActivePython win32-ix86

25 Active Python Installation (cont.) Click Complete, then click Next

26 Active Python Installation (cont.) Click Install

27 Active Python Installation (cont.) Installation progressing

28 Active Python Installation (cont.) Click Finish

29 wxPython Installation Double click wxPythonWIN Py23, click Next

30 wxPython Installation (cont.) Click Yes

31 wxPython Installation (cont.) Click Next

32 wxPython Installation (cont.) Click Full Install, Click Next

33 wxPython Installation (cont.) Click Next

34 wxPython Installation (cont.) Installation progressing

35 wxPython Installation (cont.) Click Finish

36 wxPython Installation (cont.) Compilation

37 AGTk Installation Double click AGTk-2.3-Py-2.3, click Next

38 AGTk Installation (cont.) Click I accept the agreement, click Next

39 AGTk Installation (cont.) Click Next

40 AGTk Installation (cont.) Click Next

41 AGTk Installation (cont.) Click Next

42 AGTk Installation (cont.) Click Next

43 AGTk Installation (cont.) Installation progressing

44 AGTk Installation (cont.) Click Finish

45 AGTk Installation (cont.) Open Access Grid Venue Client by double click at icon, click OK

46 AGTk Installation (cont.) Fill the information in the window, fill ult at Home Venue

47 AGTk Installation (cont.) Program’s Main windows

48 Import certificate file Click Preferences ---> Manage Certificates ---> Certificate Manager

49 Import certificate file (cont.) Choose tab Trusted certificates, click Import

50 Import certificate file (cont.) Choose certificate file bc.0 in directory ThaiGridCert downloaded from website, click Import

51 Import certificate file (cont.) Choose tab Certificate, click Import

52 Import certificate file (cont.) Choose file usercert.pem as Certificate file, choose userkey.pem as Private key file from folder ThaiGridCert, click Import

53 Import certificate file (cont.) Fill passphrase 1q2w3e4r

54 Import certificate file (cont.) Click OK

55 Import certificate file (cont.) Certificate is already been added

56 Create proxy Choose tab Globus proxies, click Create

57 Import certificate file (cont.) Fill information in windows –Pass phrase : fill 1q2w3e4r –Key size : 1024 –Proxy lifetime [hours] : proxy available duration time

58 Import certificate file (cont.) Globus proxies

59 Activating certificate Restart Venue client to activate all the setup –Exit venue client –Start venue client

60 Video Camera Installation At menu bar, click Preferences ----> Manage My node

61 Video Camera Installation (cont.) Click VideoConsumerService, right click, choose Add

62 Video Camera Installation (cont.) Choose VideoService, click OK

63 Video Camera Installation (cont.) Choose video camera, click OK

64 Video Camera Installation (cont.) At menu bar, click File ----> Storge configuration

65 Video Camera Installation (cont.) Choose default Windows, click OK

Using Access Grid

67 Join the room At main window, Click Go

68 Join the room (cont.) Fill name and , click Accept

69 Join the room (cont.) Click at mini video window for bigger one

70 Conversation example s S m M l L

71 Change the conversation room At main window, double click desired room

72 Video Configuration At vic, click Menu

73 Video Configuration (cont.) Choose Bandwidth, number of frames per second Click Release, tick at Transmit Click Dismiss to exit

74 Video Configuration (cont.) Click Autoplace to adjust size of Video

75 Video Configuration (cont.) Choose size, click Apply, click Close

76 Sound Configuration Slide button volume to adjust sound volume

Thank You

Using more access grid features

79 Text-based Chat

80 Exchanging File

81 Upload File

82 Upload File (cont)

83 Download File

84 Share Browser

85 Adding Share Browser

86 Starting Share Browser

87 Using Share Browser

88 Removing Share Browser

89 Share Presentation

90 Adding Share Presentation

91 Starting Share Presentation

92 Using Share Presentation

93 Using Share Presentation

94 System Tests Assess the state of network connectivity Test audio with remote site –Normalize transmission levels across nodes –Eliminate poor-quality audio –Ensure that node operator can speak in a normal voice and type w/o being detected on public channel PowerPoint dry runs –Download ppt files before event if very large –Remote animations and transitions Participate on the mud

95 Runtime Adjustments Display Audio Video BackChannel Communications Distributed PowerPoint Participate on the mud

96 Display Presenter should be able to see –Remote audiences –His own video –Remote nodes' displays If cpu is pegged on display, mute non- critical video streams to save decoding Place video window of remote presenter on the same side of his ppt as he appears in real life

97 Audio Closely monitor audio transmit levels Turn off transmission when another node has the floor for an extended period Turn off silence suppression during presentations Inform local participants when you turn transmit on and off Relaunch rat if experiencing bad audio distortion

98 Video Keep presenter framed in camera, but avoid Blair Witch syndrome Ensure presenter looks in the camera during presentation When an audience member ask a question, zoom audience cam in for a closeup Adjust hue/saturation/contrast/brightness Clamp transmission bandwidth to improve outgoing audio quality

99 Distributed PowerPoint Announce slide changes on backchannel Relaunch master if clients stop following Kill master process after presentation

Backup Slides

101 AGTK Architecture Venue Server Venue Client Bridge Server Node Service Service Manager Venue Management S S S

102 RTP-based Client Bridge Client 1 video/1 audio n video/n audio 1 video/1 audio m video/1 audio Client Multicast n video/n audiom video/1 audio

103 Multicast IP Class D /4 – ABC DEF / / /10000

104 H.323 Client MCU Client 1 video/1 audio 1 mixed video/1 mixed audio 1 video/1 audio

105 PKI Properties A key pair consists of a private key and a public key –Data encrypted by the private key can only be decrypted by the public key –Data encrypted by the public key can only be decrypted by the private key Private key must be kept in a secure place accessed by the owner Public key can be distributed freely

106 PKI Properties (cont.) Usage –Encryption Encrypted by the public key of remote peer –Authentication Encrypted by the private key of local peer General Usage –Encrypt data by the local private key then –Encrypt the data again by the remote public key

107 Generic PKI A private public B private public C private public

108 Certificate Authority A private cert B private cert C private cert CA private cert

109 Multiple CA A private cert 1 B private cert 2 C private cert 1 CA 1 private cert CA 2 private cert

110 PKI with CA Private Public CA AHost B Private Public 1: generate a pair of private key and public key 2: sign its public key by its own private key 3: distribute CA certificate to other parties 1: generate a pair of private key and public key 2: sign its public key by CA public key 3: submit the request to CA 4,5: sign by CA private and reply Public A.1 A.2 A.3 B.1 Public B.2 B.4 B.3 B.5

111 Distributed PowerPoint display box client slides.ppt master slides.ppt display box client slides.ppt display box client slides.ppt registry and agserv ku.ac.th kmitnb.ac.th sut.ac.th

112 Access Grid use PKI as key infrastructure Usage –Encryption Encrypted by the public key of remote peer –Authentication Encrypted by the private key of local peer General Usage –Encrypt data by the local private key then –Encrypt the data again by the remote public key