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1. access 9 SageServicelmpl SY serialVersionUID long d SageServicelmpl authenticate bringToFront s eT amp get ppinfo getSageSessioninto getSageSessions getzZValues launchYNC move Mindow resizeVVindow sendMessage subscribeToTopic unsubscribeFromTopic Figure 14 class diagram of evl sage server package Type Name Description Class SageServicelmpl Servlet to handle the client reguests and to communicate with the native SAGE application using XML RPC It implements the SageService interface to handle the asynchronous SAGE service calls requested by the client Department of Computer Science UIC 29 Class StreamingServlet Servlet to broadcast SAGE or application specific update messages to all the clients accessing the SAGE session Table 4 Server package description 13 3 Sequence diagram To illustrate the working of the application better a sequence diagram for a normal application window move operation is shown below Window move sequence diagram User it window SaqeAppWindow display SageDisplay SageService SageService SageServiceServlet SageServicelmpl wi agato moverit on amp ppMove Vidget Rectangle Fires app move event update Appint4Status JSONObject Sends the application window nformation as a JSON encoded string The servlet invokes the Sage Proxy server2. E Sageapp addClickListener addDisplayConstraintListener addSageAppListener equals highLight call import onMouseDown onMouseEnter onMouseLeave onMouseMove onMouseUp redraw removeClickListener removeDisplayConstraintListener removeSageAppListener reset ooooooooooooRRR ResizeBarListener dragstarDC int dragStartY int TT dragging boolean A scale float onMouseDown onMouseMove onMouseUp smee call import rase call import instantiate of DELETED_STATE int of EMPTY_STATE int of FAILED_STATE int 2 fileName String of PENDING_STATE int of UPLOADED_STATE int of UPLOADING_STATE int fireClose Rd tt dl fireConstrainToMax fireConstrainToMove fireConstrainToResize fireMove fireResize amp FancyFileUpload addChangeListener getCheckForFileNameDelay getPendingDelay getText getUploadState getWordwrap removeChangeListener setCheckForFileNameDelay setPendingDelay setText setVVordVVrap call import interfaces SageAppListener FEE EE onAppClose on ppMove 2 e e e e e e e on ppResize e e Figure 13 class diagram of evl sage client ui package Department of Computer Science UIC 26 Type Name Description Clas
3. X Active s a User ID List of active SAGE sessions Gmc Oms Obytes ODrea roue edu 0443 E Figure 5 Welcome screen Department of Computer Science UIC 9 5 2 Connect screen Users can connect to an active SAGE session by performing the following steps e Click on the active SAGE session name e Enter the secret session password Click Connect button If password is authenticated the application displays the SAGE display along with the application windows else displays an invalid password error message PR Ed kerpana mae ase ede de Customize Links IM Free Hotmal Windoves Marketplace Windows Mada Windows _ SAGE saai SEGP Nofe Please ignore the loading icon on your browser This happens because of the server side push impie Active SAGE sessions Yorda meren irawan Mind Enter Session password y _ o Sam AA Om Cursus SAGE Display Controller SAGEv2 0 or Session password Connect dialog popup Transtermg data from rico evi Lk edu Oms Gms Obytes Of0req necoevi uc edu 0443 Figure 6 Connect screen Department of Computer Science UIC 10 5 3 SAGE Display screen The figure below shows the SAGE Display Controller screen after establishing an authenticated connection with the SAGE environment Be pR ye Go Bookmarks Tess Hee a 6 LAS LT ere BY Oe Guros Canontcn Urks TA Free Homo LI Windows Marhetstoce wedos Meda Windo
4. working architecture Figure 2a amp 2b shows the screenshots of the stand alone python user interface application and the browser based SAGE Display Controller application Ele Opia Feromane Session Help Ratko amp yori Rako papers gadgets 2 gadgets Cleck VEEViawer Ee A VUCViewer MyDesktop Tux tv Lew Chicaga Evts hdmoviernoglut hd movie noglut 3 hawawie noglue vol ews hdnovie nogLut leu yor a Figure 2a Stand alone python based SAGE user interface application Department of Computer Science UIC 5 Y SAGE Display Controller Mozilla Firefox Pie Li Ven Go imris Io bep BD BO KANGGE mus es Bil Oe Lime Customs inks L Free hotel Windows Marketplace Windows Mada L Windows PDT J Loading ix SE GEP SAGE Display Controller Disconnect Wardenng data fem nca ee edi TERRE WERE mood Figure 2b Web based SAGE Display Controller 4 Features The SAGE Display Controller is a browser based application that uses the latest web technologies like AJAX Asynchronous JavaScript and DHTML Dynamic HTML to provide the most essential features needed to access control the SAGE environment Some of the features are listed below e Application window operations Move resize and close the application windows on the SAGE display e Window Layout Move multiple application windows on the display simultan
5. V gt setWidgetPosition setVindows Visible edccesss call import gl SageService dd aLL O SageServiceAsync authenticate o authenticate closeApp browserHeight double closeApp getappinfo jo browser double TEE get ppinfo geSessionLi e Appling e Applnt e EE AMAR y Me setMessage o iae ees get seels a getSageSessi getSageSessions aksie pa stName getSageSessions e ere le getElemeht e kagetan enon getScreehHeight onFailure ean bd donnerais ls getScreehwidng onSuccess e meveMndowa resizeWindow onMod idLoa dO resizeWindow remove removeD splay setElemepitName pr ie reaper gt 8 StreamingServicelnternalGWTAsync sendMessage subscribeToTopic df Coordinate unsubscribeFromTopic constrainTo max ming minus plus toString Figure 12 class diagram of evl sage client package Department of Computer Science UIC 23 Type Name Description Class SageUI Main entry point class of the SAGE Display Controller application This class contains the RootPanel to which all the user interface widgets and components are added Class SageSessionList Holds the data structures and widgets for all the available active SAGE sessions that a user could connect to Class SageDisplay Holds the data structures of
6. from standard web browsers such as Firefox Safari or Internet explorer The user interface represents the tiled display along with the application windows currently running on the SAGE environment Interactivity 1s achieved by allowing multiple users to move and resize the application windows simultaneously 2 About SAGE SAGE Scalable Adaptive Graphics Environment is a graphics streaming architecture for supporting collaborative scientific visualization environments with potentially hundreds of mega pixels of contiguous display resolution In collaborative scientific visualization it is crucial to share high resolution imagery as well as high definition video among group of collaborators at local or remote sites The network centered architecture of SAGE allows collaborators to simultaneously run various applications such as 3D rendering remote desktop video streams and 2D maps on local or remote clusters and share them by streaming the pixels of each application over ultra high speed networks to large tiled displays SAGE s streaming architecture is designed so that the output of arbitrary M by N pixel rendering cluster nodes can be streamed to X by Y pixel display screens allowing user definable layouts on the display Figure la The dynamic pixel routing capability of SAGE lets users freely move and resize each application s imagery over tiled displays in run time tightly synchronizing the multiple visualization streams to form a
7. run the SageProxyServer script every time you start the SAGE application e Download the SageProxyServer zip file from http www evl uic edu cavern sage sagewebui download php page Please make sure that you download the compatible proxy server e Extract the zip file contents to your preferred working directory e Run the proxy server script with the command o python SageProxySecure py host port password where host host name of the machine running SAGE application port SAGE application port number password SAGE session password that you would like to use Note The SAGE application has to be running before you start the SageProxyServer Script 12 2 Desktop sharing Clients Only To share your desktop you have to install a VNC server on your personal device e g laptop desktop Currently the application does not support NAT addresses so if you were behind a router you would have to enable port forwarding in your router to share your desktop Please refer to the user manual section on how to start a VNC session You can download a copy of the VNC client server from the following links specific to your platform Windows client and server http www tightvnc com Mac server OSXvnc http www macupdate com info php id 11283 Mac client Chicken of the VNC http www macupdate com info php id 95 17 Linux vncviewer vncserver package or tightvnc package Department of Computer Sci
8. shown when connected to multiple sessions Click on the X mark to disconnect from an active session Share desktop button Uses VNC to share the client desktop Application window running on a SAGE environment Button to close an application window Button to maximize an application window Button to resize an application window s mn EE ES N Information icon to display update messages The SAGE Display Controller provides the user interface controls conforming very close to a standard desktop metaphor The application window has user Department of Computer Science UIC 7 interface controls very similar to a desktop application with buttons for minimize maximize and close operations The title bar handle allows the user to drag n drop window anywhere on the display and by dragging bottom right corner of the window users can resize the application window It also allows multiple window selection and move operation Access to multiple SAGE sessions is done by providing individual notebook like tabs for every SAGE sessions connected Users can move through different sessions with simple mouse click on the display tabs Active sessions can be disconnected by using the small X button on every individual display tabs The desktop sharing is an important feature of the application With one simple mouse click users are able to share their desktop on the SAGE display The application displays a popup dialog box w
9. single stream Department of Computer Science UIC 3 Figure 1a SAGE environment running on Lamda Vision a 100 mega pixel tiled display The figure also shows users sharing their desktop using the Desktop Sharing feature Figure 1b Expanding community of SAGE users 3 Related Work SAGE UI a python based stand alone application Figure 2 is available to access and control the SAGE environment The application provides all essential features like application window move resize and close operations The application also allows the user to share their desktop using a VNC server installed on their laptop tablet or desktop PC However in a collaborative environment like SAGE see Figure la it is very possible that several users would like to use the display with ease and not being able to install any special application or software And moreover Department of Computer Science UIC 4 the expanding community of users Figure 1b who have adopted SAGE for their everyday work includes scientists or researchers from several domains such as bioscience geosciences and more So being able to make the environment easily accessible and not cumbersome to use is an important design factor The SAGE Display Controller addresses the mentioned issues by being able to provide full access control of the environment from a standard web browser such as FireFox Safari or Internet Explorer thus requiring minimal or no knowledge of underlying
10. the link to common FAQ on Apache Tomcat Links include how to install Tomcat as service enable SSL Security encryption 11 Network Requirements The SAGE Display Controller uses network intensive technologies such as AJAX and XML RPC for its remote communications with server Any client with a minimum of a broadband or DSL Internet connection would be able to achieve a high performance rate Note This application has never been tested with a dial up connection 12 Installation instructions Note You need a working Apache Tomcat installed before you proceed with the installation e Download the SAGEUI WAR file from the downloads page e Copy the downloaded file into the webapps directory found under the Apache Tomcat installation root directory Based on your tomcat installation configuration sometimes you might have to re start your tomcat server for the application to work Example APACHE_ROOT_DIRECTORY home user apache tomcat Copy the SAGEUI WAR file into home user apache tomcat webapps directory Restart the apache tomcat server with the command catalina sh restart found in the home user apache tomcat bin directory If the tomcat has been installed on a machine named xyz uic edu and running on port 8443 you should be able to access the application using the URL http xyz uic edu 8443 sageui index jsp Department of Computer Science UIC 18 12 1 Additional instructions Once the application is installed you have to
11. using XML RPC to peridrm the window move operation The proxy sarver communicates with the native SAGE application using TCPAP and returns the result back to the servlet redraw 1 Figure 15 Sequence diagram of an application window move operation 14 Conclusion SAGE Display Controller has been successfully deployed at several research laboratories around the globe such as Electronic Visualization Laboratory UIC Scripps Institute of Oceanography UCSD SARA Netherlands and more Department of Computer Science UIC 30
12. DESIGN AND IMPLEMENTATION OF SAGE DISPLAY CONTROLLER BY Javid M Alimohideen Meerasa M S University of Illinois at Chicago 2003 PROJECT Submitted as partial fulfillment of the requirements for the degree of the Master of Science in Computer Science in the Graduate College of the University of Illinois at Chicago 2007 Chicago Illinois Department of Computer Science UIC 1 Table of Contents 1 IntrodBEHOR EE Eed EE mn Ee areas 3 2 About SAGE ie ER ed N OE Ee OS EER de Ge GEK ER He De EE 3 3 Related WORK esse ie Se ed ee OD Ge eene Ge See Se DE 4 4 Fealures EE ne nm AR ss Gagang EE eee 6 D User Manual serie EE ee cord ee Gee ee 9 6 Software TOOIS ak ee EE Ee ESE naa EE He eed RE EE RAN U A 13 7 MAfchile llie ER RE Ge ee GR ei EE 15 8 Application flow pipeline 17 9 Software Download RE EE GEE tea Ee NE Ge ne ee see 17 10 Software Hardware Requirments 17 11 Network Requirements 18 12 Installation instructions ss 18 13 Code SUG EE N N diese Se bi N etat de s sd nine 21 14 Conclusion dre Ee EEN ententes tnt tn 30 Department of Computer Science UIC 2 Design amp Implementation of SAGE Display Controller 1 Introduction SAGE Display Controller a web based application designed and developed to access and control the SAGE environment The application allows a novice user to interact with the environment
13. all the application windows of type SageApp and implements SageServiceAsync interface to invoke the asynchronous SAGE services Interface SageService An interface implemented by the server side servlets allowing the clients to communicate with the SAGE services asynchronously Interface Streaming Service An interface implemented by the server side servlets to broadcast application update messages to all the Department of Computer Science UIC 24 clients accessing the SAGE session asynchronously Table 2 Client package description Department of Computer Science UIC 25 interfaces inter ex interface SourcesSageAppEvents SourcesDisplayConstraintEvents DisplayConstraintListener import addSageAppListener addDisplayConstraintListener removeSageAppListener removeDispiawfbnstraintListener constrainToMax constrainToMove constrainToResize applD int appName String SageDisplayPanel configNumber int add 9 currUlDimension Rectangle add ifolsxt String addMouseListener isClustered boolean constrainToMax 9e overlay Orie constrainToMove Preke Rectangle constrainToResize p sageDimensions Rectangle onBrowserEvent saillD int remove select boolean removeMouseListener ais setSize Op Zindex i 00000c0eevee
14. asy for machines to parse and generate It is based on a subset of the JavaScript Programming Language e Apache Tomcat A web container developed by the Apache Software Foundation ASF Tomcat implements the servlet and the JavaServer Pages JSP specifications from Sun Microsystems providing an environment for Java code to run in cooperation with a web server Department of Computer Science UIC 13 Tools Version Purpose Google Web Toolkit 1 2 User interface controls 4 GWT Asynchronous Javascript calls Apache XML RPC 1 2 b1 Communicate with the SAGE proxy server JSON Library 0 9 Transform Java type data structures to JSON format Primary data exchange format Tomcat Server 5 1 Server to host the web application module and JAVA servlets Table 1 Software tools Department of Computer Science UIC 14 7 Architecture SAGE Display Controller Architecture AJAX App z Tontrol messages Web clients JSON encoded Raw App Info App Info Data Data e TCP IP Standard Web Server Control messages Uve video feeds XNL RPC gt requests sela PEER Sewer Module Remote sensing lokme AJAX Asynchronous JavaScript pa ya fe L JSON JavaScript Object Notation Migh resolution maps XML Extended Markup Language ste Re SA RPC Remote Procedure Call SAGE Emironment Figure 9 SAGE Display Controller application architectu
15. eeded by the servlet module to communicate with the native C SAGE application as XML RPC service The presence of a proxy server removes the restriction of the servlet module to be installed on the same machine where SAGE application is running In real world the SAGE application could be launched in a remote cluster and the server hosting the client module and servlets can be installed on any web server and with a proxy server in between communication between the web client and the SAGE application is handled seamlessly Department of Computer Science UIC 16 8 Application flow pipeline The SAGE Display Controller application is hosted on a standard web server which could be accessed using the server URL from the web browser All the DHTML based user interface components are downloaded automatically on the client machine with the necessary JavaScript to manipulate and control the user interface components When the client performs an action e g move a window an Asynchronous JavaScript AJAX control message is sent to the server along with necessary data needed to control the SAGE environment The Servlet module accepts the client s request and makes an XML RPC request to the proxy server module to communicate with the native SAGE application Upon successful of the XML RPC request the Servlet returns the browser s call with the updated data structures Since all the communications are done asynchronously the client or the server d
16. ence UIC 19 Note Configure your firewall to allow port 5900 default VNC port If the VNC server is running on some other different port please allow exceptions for that port number on your firewall Department of Computer Science UIC 20 13 Code structure The code base is grouped into different packages based on the Java and GWT recommendations The Figures 10 amp 11 below shows the different packages and the dependencies between them 13 1 packages e evlsage client ui The Google Web Toolkit was extended to built custom user interface widgets specific to the SAGE Display Controller application This package contains all the widgets and controls It is always a good practice to separate the user interface components in a package different from the packages that use the components e evl sage client Package contains the classes and data structures used to build the application The remote interfaces needed for asynchronous communication with the server are defined in this package Classes in this package accesses or calls classes defined in the evl sage client ui and evl sage common packages HA evl sage client ui calls 7 qal impor mpl 3 evl sage client 3 evl sage common Figure 10 package dependency diagram of client package Department of Computer Science UIC 21 e evl sage common package contains classes that define the custom data structures used in the application Classes conta
17. eously e Multiple SAGE sessions Connect to multiple active SAGE sessions simultaneously and control the sessions e Secured SAGE sessions Password protected SAGE sessions permits limited access to available SAGE sessions e Desktop sharing Share the desktop with one single mouse click Note requires a VNC server installed on the client s machine Department of Computer Science UIC 6 2 SAGE Display Controller SAGE v2 0 Mozilla Firefox He tt Yew Go pansis ook rek gt g A E hausssreoedc eda sagea der mp BE mron J Costorn on Links IM Free Hotmad L Windows Marintpioce Windows Media Windows SAGE L SAGE2 ad a 5 131 193 79 211 Instructions Se GB SAGE Display Controller SAGEv2 0 5 Note Please ignore the loading icon on your browser This happens because of the server side push implementation v Aawe SAGE sessions Yorda Mind di 2 131 193 179 211 amp yorda X 6 5 s 3 Share My Desktop lt gt Transferring data from r co ed ut eds Oms Cms Obytes Greg neneduk edur8t43 Figure 3 SAGE Display Controller application to connected to SAGE session Yorda Legend 1 Tiled display Figure3 Shows 11 x 5 tile configuration 2 Display tab with SAGE session name Multiple tabs will be
18. ined in this package are accessed by both the evl sage client and evl sage server packages e evl sage server package holds the entire server related classes accessed by the clients Classes in the package access the evl sage common package for creating application specific data structures to be sent back to the clients 3 evl sage client T Lee EE 3 evl sage server access Call import instantiate g evl sage common Figure 11 package dependency diagram of package evl sage server 13 2 class diagrams This section lists all the relationship between the classes in individual package and the functionality of the classes Department of Computer Science UIC 22 interfaces StreamingServicelnternal a currentlyUpdating boolean end Coordinate origin Coordinate sessioninfo SageSessioninto sendMessage sendMessage subScribeToEvent d SageDisplay unSubScribeFromEvent SageToUl UtoSAGE addMindow createCluster currentlyUpdating destroy eimpdrt get bsoluteTop getAppinfo init sendMessage sendMessage launch NC sendMessage subscribeToTopic onAppClose subScribeToEvent unsubscribeFromTopic onAppiioved unSubScribeFromEvent onAppResize onvYindowResizedQ removeVVindow sendMessage subscribeToTopic unsubscribeFromTopic a StreamingServicelnternalGWT callbacks Map lt K
19. ith information like VNC server address port number and an input field to enter VNC password Note To perform desktop sharing a VNC server is required to be installed Please visit the documentation page http www evl uic edu cavern sage sagewebui documentation php or section 11 2 to learn more about on instructions to install VNC The SAGE Display Controller s multi browser feature browser independent makes the application very scalable and easy to use The application takes care of all the browser compatibility issues and hence providing the same look and feel interfaces on all the web browsers INTERACTIVE ZT Figure 4 SAGE Display Controller working on a Nintendo Wii video game console Department of Computer Science UIC 8 5 User Manual This section illustrates the step by step instructions to connect and interact with an active SAGE session 5 1 Welcome screen The welcome page of the application lists all the active SAGE sessions along with links to instructions user profile name or client IP address SAGE Display Controller SAGE v2 0 Mozilla Firefox fle Edt yew Go Boskmarks Toe tep 9 8 PE rico en uk edud sagedinde p BY co tde Customize Urks IMI Free Motmal Windows Marketplace Windows Meda Windows SA Saga ag m pstruchon ScGe SAGE Display Controller SAGEV2 0 Note Please ignore the loading icon on your browser This happens because of the server side push implementation
20. oes not block on any request which allows the user interface components to be updated automatically and thereby giving a feel of multi threaded application This kind of asynchronous communication lets the application to behave like a standard desktop application and avoiding page refreshes typically encountered by standard HTML based web applications Also using the latest JSON JavaScript Object Notation format for data exchange between the client and the servlet improves the performance of the application since JSON uses minimal encoding of control messages and data structures compared to commonly used data exchange format like XML 9 Software Download The latest version of the SAGE Display Controller application can be downloaded using the URL http www evl uic edu cavern sage sagewebui download php A version compatible with the new SAGE2 is also made available 10 Software Hardware Requirements e Apache Tomcat Servlet Container Version 4 amp above e VNC client server application Required for desktop sharing feature only Department of Computer Science UIC 17 You can download a copy of the VNC client server from the following links specific to your platform e Windows client and server http www tightvnc com e Mac server OSXvnc http www macupdate com info php id 1 1283 e Mac client Chicken of the VNC http www macupdate com info php id 95 17 e Linux vncviewer vncserver package or tightvnc package Here is
21. re The application architecture mainly comprises of three important modules e JavaScript client module e JAVA servlet module e XML RPC proxy server module 71 JavaScript client module The JavaScript client module is responsible for all the user interface components of the application and the client side validation rules The GWT library translates all the widgets to their corresponding HTML DHTML elements and also generates the necessary JavaScript code to manipulate the DOM Document Object Model Using the AJAX functionality the client makes asynchronous calls to the server to Department of Computer Science UIC 15 obtain updated information from the server based on user s interaction with the environment The AJAX feature lets the widgets update themselves with new information without requiring reloading of the pages thus giving a feel of desktop applications 7 2 Java servlet module The servlet module handles all the requests sent by the client and acts as a proxy between the native SAGE application and the clients The communication between the server and the native SAGE application is done using the python based SAGE proxy server module described in section 6 3 Using a servlet helps avoid the same server JavaScript security violation that does not allow the browser to send requests to any other server domain from where they were hosted originally 7 3 Proxy server module The proxy server module exposes the interface n
22. s SageApp User interface widget for a SAGE application window The widget represents a window with buttons to minimize maximize and close It also implements EventListener interfaces to provide drag n drop and resize functionality Class SageDisplayPanel Widget to represent the tile display It can contain only widgets of type SageApp as child widgets and also holds the user interface components to launch the VNC session desktop sharing It also invokes the asynchronous SAGE services whenever an application window event occurs Interface SageAppListener Event listener interface for SAGE application window events Interface DisplayConstraintListener Event listener interface for display constraint events This interface is implemented by the SageDisplayPanel to Department of Computer Science UIC 27 constrain the movements of window within the display panel Table 3 Client UI package description Department of Computer Science UIC 28 StreamingServiceBusiness d StreamingServiceBusiness addObserver deleteObserver isClientSubscribedToQueue sendMessage subscribeToTopic unsubscribeFromTopic weaitForEvents of eventTime long of message String of queueName String toString 3 EventObservable notifyObservers 9 FileUploadServlet StreamingServlet pe df StreamingServiet init
23. w with title as VNC appear on the lower left corner of the display else an error message is displayed SAGE Display Controller SAGE v2 0 Mozilla Cle Gt yw kedaha Jek bep EE TEI aa i 680 L Customise Links IMI Free Hctmal Windores Marketplace Windows Meda Windows SAGE ING t Transferring daka from rao EA odu Om On Obytes Qora radar PAD DY Figure 8 Desktop sharing popup dialog Department of Computer Science UIC 12 6 Software Tools This section lists all the third party toolkit and dependency software packages that were used for the application development JAVA and Python were the primary language used to develop the application Table 1 shows the tools used along with their use e Google Web Toolkit GWT A JAVA toolkit for developing dynamic rich and interactive web applications The unique feature of this toolkit is to translate all the JAVA code into JavaScript code which allows the application to be launched using standard web browser http code google com webtoolkit e Apache XML RPC Is a Java implementation of XML RPC a popular protocol that uses XML over HTTP to implement remote procedure calls e JSON Library Is a java library for transforming beans maps collections java arrays and XML to JSON and back again to beans and DynaBeans JSON JavaScript Object Notation is a lightweight data interchange format It is easy for humans to read and write It is e
24. ws LI SAGE LI saa Co i 131 193 79 211 Instructions SeGe SAGE Display Controller SAGEv2 0 eee Note Piaase ignore the loading icon on your browser This happens bacause of the server side push implementation Aatve SAGE sessions 4 orda n Aina a Mina i LIK AIM d yorda X Figure 7 Display screen Legend 1 Tiled display Fig Shows 11 x 5 tile configuration 2 Display tab with SAGE session name Multiple tabs will be shown when connected to multiple sessions Click on the X mark to disconnect from an active session Share desktop button Uses VNC to share the client desktop 4 Application window running on a SAGE environment Department of Computer Science UIC 11 Button to close an application window Button to maximize an application window Button to resize an application window D El Fr M Information icon to display update messages 54 Share the desktop Users can share their desktop on the SAGE environment by following the steps below 1 Click on the Share My Desktop button located on the lower left corner of the tiled display widget 2 On the popup dialog box enter the VNC session password and verify the display information populated automatically in the dialog box 3 Click OK to launch the session Note If the launch was successful you will see a new application windo
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