Int'eu'grid KOM

1
Interactive Visualization and Collaborative Tools
(for int.eu.grid)

• Introduction and Plans
• Paul Heinzlreiter
• Contributors
• Maria Jose Rguez. Malmierca (CESGA)
• Natalia Costas (CESGA)

2
Overview

• Collaboration
• Collaborative Tools
• Interaction
• Visualization
• Plans for int.eu.grid

3
Distributed Collaboration

• Work together towards common goals
• Space Time Conditions
• Needs (Researcher Teachers)
• Communcation Tools
• Group Work Environments
• Transmitting / Evaluating / Debating
• File Sharing / Applications / Images / Video

4
Asynchronous

• Multidirectional
• Email
• Debatte Forums
• Mailing Lists
• CVS
• Document Sharing

• Aspects
• Different Time Zones
• Numerous Groups
• Archived Commuication

5
Synchronous

• Types
• Chat (ICQ, IRC, ...)
• Audio/Video-Conference
• Electronic Whiteboard
• Remote Desktop
• Instant File Transfer

• Aspects
• Immediacy
• Naturalness
• Easy Understanding
• Quick Feedback

6
Chat

• Text ? Low Bandwidth
• Communication
• One ? One
• One ? Several
• Conversation Liniarity ? Confusion

7
Audio Conference

• Voice ? medium bandwidth
• Full duplex
• Multiaudio Conference Change
• Heterogeneous Meetings
• Enablers
• Autonomous Devices
• Service
• PC Software

8
Video Conference

• Video and Audio ? High Bandwidth
• Point to Point
• Multipoint
• Enablers
• Autonomous Devices
• PC Software
• AccessGrid, VRVS, ...

9
Shared Electronic Whiteboard

• Collaborative Editing
• Remarks
• Highlighting
• Applications
• Informal Notes
• Brainstorming
• Graphics Design
• Engineering
• ...

10
Shared Remote Desktop

• Features
• Remote Desktop Visualization
• Multiple Attendants
• Server / Client Model
• Data Encryption
• VNC, UltraVNC, ...
• Applications
• Demo Visualizations
• Use of remote programs
• Remote troubleshooting

11
Immediate Feedback Tools

• Features
• Feedback to teachers
• Interactivity
• Secondary Tools
• Minimum Bandwidth
• Integrated in
• Webinars
• Chats

• Applications
• Voting
• Instantanious Tests
• Give the Floor
• State Notification

12
VRVS

• Virtual Rooms Videoconferencing System
• Web-based Collaboration Plattform
• Videoconference
• Multicast / Multipoint
• Multiplatform
• Education / Research
• Chat
• Shared Desktop
• Shared Web browsing

13
Webinars

• Web software Collaboration / Teaching
• Webbex, Breeze Live, Webhuddle, ...
• Unidirectional Audio/Video
• Navigation Applet
• High number of Participants
• Limited Bandwidth
• Multimedia Presentations
• Shared Whiteboard and Desktop
• Chat and Feedback Applications

14
Complimentary Tools
Tablet PCs
Interactive Whiteboards
PDAs
15
Interactivity

• Different
• Views
• Solutions
• Applications
• Interactivity on the Grid
• CrossGrid results
• glogin

16
glogin

• enables online communication between nodes on
  the Grid and off the Grid
• provides shell functionality for access to
  Grid nodes
• is a standard (lightweight) Grid job
• is easy to install and use
• supports GSS-based encryption

17
glogin Functionality

• Basic
• Low-level grid communication
• unnamed pipes for stdin/stdout/stderr redirection
• Advanced
• Grid shell
• Traffic forwarding
• VPN support

18
glogin Operation
Workernode
Gatekeeper
Client
job submit
Point ofContact
glogin
fork
?
interactive bidirectional connection
Workernode
glogin
socket
Workernode
traffic forwarding
glogin
Workernode
Workernode
on the Grid
19
glogin Shell Access
http//www.gup.uni-linz.ac.at/glogin
20
Visualization

• Work done in
• CrossGrid
• Austrian Grid
• Core Aspects
• Interactivity
• Efficient Visualization and Transportation
• Visualization Steering

21
Visualization on the Grid

• Grid application uses Visualization Toolkit (VTK)
• Visualization data is transparently sent to the
  client
• Client displays data
• Interaction is transferred from client to grid
  application
• Data transfer over glogin

22
GVid Video Transmission over the Grid

• Video Streaming over the Grid
• Rendering can be done on grid resources
• Full interactivity support
• Communication over glogin
• Based on Video Codec

23
GVid Interaction
Workernode
CE / Vis
Point ofContact
Workernode
WORKING!
vis.data
Workernode
glogin
Client
Workernode
glogin
on the Grid
24
GVid Transmission over the Grid
Application GVid
UI
Grid
vtk App
grid-proxy-init glogin -x C altix1
25
Interactive Control of a Remote Application
26
Interactive Visualization Steering

• CrossGrid Biomedical Application
• Bloodflow Visualization
• Interactive Glyph Rendering on the Grid
• Using glogin

27
Interactive Visualization Steering - Architecture
Simulator
Conceptual dataflow
Frame Selector
Frame Player
stdin stdout
Unnamed pipe
glogin
glogin
GSS secured communication
28
Desktop VRE with GVK Extensions

• Parallel simulation on the grid
• Online visualization on the desktop machine
• Rendering on the grid
• The grid is invisible

29
Plans for int.eu.grid

• Visualization Services
• Video Streaming
• Integration in Crossgrid with UvA
• Integration with middleware (gLite) to be
  improved
• Visualization is application (more or less)
  dependent
• Suggestions?

30
Plans for int.eu.grid

• Glogin extensions
• Glogin already ported to gLite
• Secure Multicasting
• Globus XIO-based multicast already available
  (Univ. Cambridge)
• GLite?
• Multipoint Security still to be investigated
• Open (discussion)
• Integration
• MD (Job Submission, Visualization Output)
• Applications?

31
Plans for int.eu.grid

• Visualization should follow application
  requirements
• ExampleFusion Application
• OpenGL based
• Video Streaming (?)
• Integration with MDVideo-Player Plugin?