Visualization Using EnSight - TAMU Supercomputing Facility
Contents
1. NU ull 0 0 ul NA MESS VW 000 M A hy SN Structured grid example Ensight Short Course am az Z EUR DIU ac mm LTR TT omit The Building Blocks for unstructured grids Element Ensight Short Course two node bar three node triangle six node triangle four node quadrangle eight node quadrangle four node tetrahedron ten node tetrahedron 5 node pyramid 13 node pyramid Ensight Short Course eight node hexahedron 4 6 1 3 2 six node pentahedron wedge fifteen node pentahedron wedge Ensight Short Course Parts A collection of nodes and The Main Parts List shows all parts elements that share the same attributes model parts There are two kinds of parts model parts which are read in from data files 2 M C1 Collar and Base 3 1 CI Isosurface part created parts such as isosurfaces i jm UCD Contour part Parts can also be thought of as created parts parent parts child parts Anytime a parent part changes its dependent parts will automatically be updated part symbol part descriptions Ensight Short Course Cases A case is another name for a dataset collection of data files EnSight allows up to eight cases to be loaded simultaneously Among other things cases can be used to compa2. 5 30000e 00 6 30000e 00 Ensight Short Course en6 Nvec Per node vector values for the EnSight6 geometry example 1 10000e 00 1 20000e 00 1 30000 00 2 10000e 00 2 20000e 00 2 30000 0 3 10000200 3 20000e 00 3 30000e 00 4 10000e 00 4 20000 00 4 30000 0 5 10000e 00 5 20000e 00 5 30000e 00 6 10000e 00 6 20000 00 6 30000 0 7 10000e 00 7 20000e 00 7 30000e 00 8 10000e 00 8 20000e 00 8 30000e 00 9 10000e 00 9 20000e 00 9 30000e 00 1 01000e 01 1 02000e 01 1 03000e 01 1 11000e 01 1 12000e 01 1 13000e 01 part 3 block 1 10000e 00 2 10000e 00 3 10000e 00 4 10000e 00 5 10000e 00 6 10000e 00 7 10000e 00 8 10000e 00 9 10000e 00 1 01000e 01 1 11000e 01 1 21000e 01 1 20000e 00 2 20000e 00 3 20000e 00 4 20000e 00 5 20000e 00 6 20000 0 7 20000e 00 8 20000e 00 9 20000e 00 1 02000e 01 1 12000e 01 1 22000e 01 1 30000e 00 2 30000e 00 3 30000e 070 4 30000e 00 5 3000000 6 30000 0 7 30000e 00 8 30000e 00 9 30000e 00 1 030006 01 1 13000 01 1 23000e 01 Ensight Short Course en6 Eten Per elem symmetric tensor values for the EnSight6 geometry example part 1 tria3 2 10000e 00 2 20000e 00 2 30000e 00 2 40000e 00 250000 00 2 60000 0 3 10000e 00 3 20000e 00 3 30000e 00 3 40000e 00 3 500006 00 0 0 hexa8 4 10000e 00 4 20000 00 4 30000 00 4 40000 00 4 50000 00 4 60000 0 part 2 bar2 1 10000e 00 1 20000e 00 1 30000e 00 1 40000e 00 1 50000e 00 1 60000e 00 part 3 block 5 10000e 00 6 10000e 00 5 20000e 00 6 20000e 00 5 30000e 00
3. Texas A amp M University Supercomputing Facility Ensight Short Course Acknowledgements This presentation has been designed from information collected from CEl s website EnSight documentation and training material and examples provided by EnSight staff he initial version was revised based on many useful suggestions from the staff of the Texas A amp M University Supercomputing Facility Ensight Short Course Overvievv Introduction Overview of visualization capabilities Using EnSight in the TAMU environment EnSight data interfaces and formats Parts frames and cases The EnSight GUI Other Features Sample data files Demos Ensight Short Course Introduction Created by Computational Engineering International 03 Originated as MPGS Multi Purpose Graphics System from Cray It is an advanced software tool for the interactive visualization and animation of engineering and scientific data Especially well suited to post processing large finite element and CFD simulations Interfaces are provided to most commercial CAE software packages Ensight Short Course What are some of EnSight s capabilities Contours Isosurfaces Particle traces Clipping planes Vector arrows Elevated surfaces Displacement Ensight Short Course Profile plots Developed surfaces Tensor Glyphs Annotation Time and space animations Numerical queries Contours amp Isosurfaces displays contour loops
4. ihe 32 CPU SGI Origin 2000 titan The users of the Texas A amp M Supercomputing Facility may download the client binaries for the Ensight client from the following website http sc tamu edu help ensight 3 Downloads Binaries for linux SGI and Sun are currently available at the site and those for HP DEC IBM and windows NT 2000 workstations can be made available upon request Ensight Short Course EnSight at TAMU To use EnSight add the following to your cshre file on the server as well as the client setenv ENSIGHT7 HOME usr local ensight 3 setenv ENSIGHT7 ARCH sgi 6 5 n64 setenv ENSIGHT7 INPUT dummy set path path SENSIGHT7 HOME bin Note that the values of ENSIGHT7 HOME and ENSIGHT7 ARCH may be different for your client workstation depending on how you installed EnSight Ensight Short Course EnSight at TAMU For assistance on any aspect of EnSight use please send email to heipEsc tamu edu The local support person for EnSight Faisal Chaudhry can be reached at 862 3107 Complete EnSight documentation is available in hypertext form as online help It is also available as a set of PDF files for printing hardcopy from http sc tamu edu help ensight73 Manuals Ensight Short Course Starting EnSight Here s how you can invoke Ensight in unix Open 2 windows on your workstation desktop In one of them log in to the Ensight server titan then type the following at the
5. 00e 00 62 6 00000e 00 1 00000e 00 2 00000e 010 63 5 00000e 00 1 00000e 00 2 00000e 00 Ensight Short Course en6 geo cont d part 1 2D uns elements description line for part 1 tria3 2 10225152 2 22 103 22 44 55 hexa8 1 104 20 40 44 22 60 61 62 63 part 2 1D uns elements description line for part 2 bar2 1 Ol l 18 part 3 3D struct part description line for part 3 block iblanked 2 3 2 0 00000e 00 2 00000e 00 0 00000e 00 2 00000e 00 0 00000e 00 2 00000e 00 0 00000e 00 2 00000e 00 0 00000e 00 2 00000e 00 0 00000e 00 2 00000e 00 0 00000e 00 0 00000e 00 1 00000e 00 1 00000e 00 3 00000e 00 3 00000e 00 0 00000e 00 0 00000e 00 1 00000e 00 1 00000e 00 3 00000e 00 3 00000e 00 0 00000e 00 0 00000e 00 0 00000e 00 0 00000e 00 0 00000e 00 0 00000e 00 2 00000e 00 2 00000e 00 2 00000e 00 2 00000e 00 2 00000e 00 2 00000e400 1 1 1 1 1 1 1 1 1 1 1 1 Ensight Short Course en6 Esca Per elem scalar values for the EnSight6 geometry example part1 tria3 2 00000e 00 3 00000e 00 hexa8 4 00000e 00 part 2 bar2 1 00000e 00 part 3 block 5 00000e 00 6 00000e 00 Ensight Short Course en6 Evec Per elem vector values for the EnSight6 geometry example part 1 tria3 2 10000e 00 2 20000e 00 2 30000e 00 3 10000e 00 3 200006 00 0206 0 hexa8 4 10000e 700 4 20000e 00 4 30000e 00 part 2 bar2 1 10000e 00 1 200006 00 0006 0 part 3 block 5 10000e 00 6 10000e 00 5 20000e 00 6 20000e 00
6. 6 30000e 00 5 40000e 00 6 40000e 00 5 50000e 00 6 50000e 00 5 60000e 00 6 60000e 00 Ensight Short Course en6 Ecmp i en6 Ecmp r Per elem complex imaginary scalar values for the EnSight6 geometry example part 1 tria3 2 20000e 000 0 hexa8 4 20000e 00 part 2 bar2 1 20000e 00 part 3 bloc 5 20000e 00 6 20000e 00 Per elem complexreal scalar values for the EnSight6 geometry example part 1 tria3 2 10000e 00 3 10000e 00 hexa8 4 10000e 00 part 2 bar2 1 10000e 00 part 3 block 5 10000e 00 6 10000e 00 Ensight Short Course Other Features Ensight Short Course Command Language allows batch processing provides a counterpart for every user action in the GUI automatically records commanas into file for editing and playback allows commands to be saved as named macros allows macros to be replayed at any time or to be bound to keyboard keys allows sessions to be archived in binary form and then quickly restored Ensight Short Course Geometry handles structured unstructured hybrid and overlapping meshes allows native structured data to be viewed along constant I J K planes allows geometry to be varied with time with or without changes to mesh topology offers 1D 2D and 3D elements in linear or quadric form Ensight Short Course Parts provides individual manipulation and attribute control of analysis mesh or derived clip planes isosurfaces particle traces
7. Case Add Replace Delete File Information ro ES Format Case SebGeomehylamieme TT eb Result KV eb Mesud Path usrl people mbs ensight81 server data ami Selection tusri people mbs ensight 1 server data ami 3D ejer ea 20 full Border Feature Angle Full Non visual Ensight Short Course Parts List m PR head ILLO Ye loll ala 7 l 0 al Unstructured Data Structured Data external flow field ami x hypersonic body Element Visual Rep 3D border 2D full i Feature Angle 19 6 New Part Description NOTE Variables will not be loaded for newly created parts until this dialog is closed Visual Representations Parts may be represented in one of a number of ways Full Border 3D Border 2D Full Feature Angle Bounding Box Non Visual The representation mode does NOT modify a parts geometry it only affects what is rendered to the screen Ensight Short Course SZI gt IN M av LAC N LA DP VAVAVA SYYN NSSS YSS SYYN OHE 2 2 VAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVA VIZI Ensight Short Course 0 ERA UA DA AMT Ensight Short Course RI N IN NZ S IN SSASSN ININ H RR VY NNN INN IN NNN ZANTIN ANANIN VINNAAN Du C
8. EnSight These are found in the directory ENSIGHT7_HOME translators Type 4 EnSight Format The software supplier supports the EnSight format directly i e an option is provided in their products to output data in EnSight5 or EnSight Case format Ensight Short Course lt og CD ab mx EnSight Data Interfaces ABAQUS ANSYS CASE Ensight6 CFX5 Ensight 5 ESTET FAST Unstructured FIDAP FIRE Fluent MOVIE BYU MPGS 4 1 N3S PEOT3D Polyflow SPHINX STAR CD Ensight Short Course CEE CFX4 COBALT EXODUS II Flow 3D I DEAS LS DYNA MSC Dytran MSC Nastran PXI SCRYU SIL TECPLOT VECTIS Getting your data into EnSight EnSight typically operates on the following types of files geometry required defines the geometry of parts nodes and connectivity case or result gives variable names and associated file names and time step information variable one file for each variable which contains data for each node defined in the geometry file measure particle contains experimental data on discrete particles for comparison to computed data Ensight files can be ASCII or binary For more information on EnSight files see Chapter 2 of the EnSight User Manual Ensight Short Course Starting time step Format File input fields Geometry Results Ensight Short Course Filter usrl people mbs ensight61 server data ami Directories
9. R NZI 2 2 3 LANN ZNNAZ NI BH N 5 RI N N RI ZN ZN N 77 I d VA VA N N ZI AN AA cS n LA AN VN VN INN VIN IN IN VAVA NZI VA VA LINZ INN TN TNI ZINZZINZIN il AN lt lt 1 INNZINZIIZINZIIN SURI LLC NLN NN NLIS IZ IR NNNZE LAS NENIE 7 LLL SDS ERRAZTI NJ CER EE SR LAN NN SAN WA N NI N NI N NI NI NI NI N NI RI N NI NI NZ NY N N N N NI VAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVAVA NI VA ERAS CARN RE NZI Ensight Short Course Ensight Short Course Ensight Short Course Ensight Short Course Structured vs Unstructured Grids EnSight supports both unstructured and block structured grids A block structured grid is a curvilinear grid Think of such a grid as a brick whose length width and height are called J and K and where each I J K point has an associated physical space coordinate X y z All structured grids are topologically equivalent to such a brick Ensight Short Course Structured grid example Ensight Short Course Structured grid example Ensight Short Course Wy Hi 4 S AD TT i Wi 8 M d YO RX TSS 7 M XI St 4 a 22
10. ain Menu 1 Feature Icon Bar M File Edit Query View Tools Prefs Help 1 Sets the current feature Click an icon to open the associated Quick Lud Ed Es HH El ES ES a Te 9 2 m On Wector 1 Interaction area Sele ste Colar By Constant Celar VSSE Magnitude i 8 a 1 MACE body J osmponen i Main Parts List 1 4 M CE side momnt Ss Mix 8 Glis B5 1 1 3 XM CI engine block Coordinates 1 All parts from your model as vvell as LMCI rear mounts Time created parts e g clips isosurfaces are listed here Click an item to 1 select part s to operate on Apply New Variable Y Mode Selection Area Shaded Hiddem Lime Cursor Line Plane xin Past Display ege n lt Infor Sets the major mode of EnSight Part Annot Plot VPort and loads the applicable set of icons into the vertical Mode Icon Bar Click the button to select the Mode Mode Icon Bar 5 The set of icons associated with th current Mode Click the icon to access the function Click and hold the left mouse button to display a short description of the icon in the Message Area Use the vertical scroll bar to access the remainder of the icons Transformation Control Area 1 Buttons that control the current transformation operation e g rotate l or translate associated with mouse action i
11. ansient Ensight Short Course Transient Analysis allows time steps to be changed at the click of a button automatically recalculates and redisplays existing objects to reflect each new state provides interpolation between time steps for low resolution datasets provides dynamic plots that are linked to the transient display of parent part variables Ensight Short Course Quantitative Analysis Data Query Plotting enables arbitrary points nodes elements and parts to be queried for information provides interactive probe query capability that allows variables to be displayed at a given mouse location or at the nearest node on any part allows queries to be performed along a line in space or on a part defined with 1D elements allows data queries of any variable over distance or time to be computed and saved as a table of data or used for plotting purposes Ensight Short Course Quantitative Analysis Data Query Plotting provides a full function 2D plotter to display any variable over distance or time allows all plot attributes such as color background color size axis appearance and others to be modified individually for each plot appearing in the graphics window allows external data such as measurements to be loaded and appear in a plot with or without data from analyses Ensight Short Course Output Offers stereo viewing for cost effective desktop VR Su
12. cluding rotation translation zoom rubber band zoom and scaling Reset opens the Reset Tools and Viewports dialog Transf Edit opens the Transformation Editor Z Clip opens the Transformation Editor s Z Clip mode Ensight Short Course User Interface Modes There are 6 user interface modes The current mode is selected by clicking on the desired button in Mode Selection Area View Mode controls various global viewing attributes Many of the View Mode icons have counterparts in Part Mode The View Mode icon acts as a global toggle while the Part Mode icon applies only to the parts currently selected in the Main Parts List Part Mode icons control various attributes such as visibility of the parts currently selected in the Main Parts List Annotation Mode provides control over various annotation entities such as text and color legends Ensight Short Course User Interface Modes Plot Mode provides control over the appearance and behavior of X Y plotters in the Graphics Window Viewport Mode provides control over the size and appearance of multiple viewports in the Graphics Window Frame Mode provides control over multiple frames of reference which can be positioned independently of one another Ensight Short Course Some User Interface Conventions Editable Text Fields Place the mouse cursor in the field and click to insert a blinking insertion cursor Double click to select a single word Tripl
13. e click to select a whole string IMPORTANT NOTE Generally you must type return while the blinking cursor is still in the field for the changes to take effect However one exception to this rule is the text fields for typing in file names in the File Selection dialog Ensight Short Course Sample Dataset Per Element Geometry File Scalar Variable Tea Vector Variable Complex Variable Tensor Variable Ensight Short Course Sample Data EnSight Case Format FORMAT type ensight GEOMETRY model en6 geo VARIABLE constant per case Cden 8 scalar per element Esca en6 Esca scalar per node Nsca en6 Nsca vector per element Evec en6 Evec vector per node Nvec en6 Nvec tensor symm per element Eten en6 Eten tensor symm per node Nten en6 Nten complex scalar per element Ecmp en6 Ecmp r en6 Ecmp i 2 complex scalar per node Ncmp en6 Ncmp r en6 Ncmp i 4 Ensight Short Course This is the 1st description line of the EnSight6 geometry example This is the 2nd description line ofthe EnSight6 geometry example node id given elementid given coordinates 11 15 4 00000e 00 0 00000e 00 0 00000e 00 31 3 00000e 00 0 00000e 00 0 00000e 00 20 5 00000e 00 0 00000e 00 0006 0 40 6 00000e 00 0 00000e 00 0006 0 22 5 00000e 00 1 00000e 00 0 00000e 010 44 6 00000e 00 1 00000e 00 0 00000e 00 55 6 00000e 00 3 00000e 00 0006 0 60 5 00000e 00 0 00000e 00 06 0 61 6 00000e 00 0 00000e 00 2 000
14. entation not loaded part modify end data partbuild data type unstructured view transf function global view transf translate 17 368887 6 220861 0 000000 view transf function revolution part select begin Insert on last line 3 Pe rece ST part select_end command delay_refresh OFF Delete the commands devsrf begin associated with the devsrf origin 0 0000e 00 0 0000e 00 0 0000e 00 last operation performed devsrf axis 0 0000e 00 0 0000e 00 1 0000e 700 devsrf seam ve by EnSight devsrf end Ensight Short Course Getting your data into EnSight EnSight supports a number of common data formats as well as interfaces to various simulation packages There are four different means to get your data into EnSight Type 1 Direct built in Readers Are accessed by choosing the desired format in the Data Reader dialog These include common data formats as well as a number of readers for commercial software Type 2 User Defined Readers A library of routines is provided with EnSight to allow users to create their own custom interfaces A number of User Defined Readers are provided with EnSight complete documentation and dummy routines may be found in the directory ENSIGHT7_HOME user_defined_src readers Ensight Short Course Gefting your data into EnSight Type 3 Stand Alone Translators May be written by the user to convert data into EnSight format files Several translators are provided with
15. etc parts allows parts to be copied cut merged into a single part and converted to a new representation enables part copy to be positioned independent of the original part in order to display a different variable Ensight Short Course Attributes Provides control of the following attributes on a global Or per part basis visibility of elements lines or nodes transparency simple screen door or alpha shading color line hidden line and surface display line style and thickness lighting parameters representation mode 3D edge feature angle element shrink factor symmetry operations Ensight Short Course Results Data amp Variables enables users to load and visualize multiple scalar and vector variables simultaneously conserves memory by allowing variables to be selectively loaded and unloaded provides node based cell center based or mixed operations allows variables from different time steps to be displayed simultaneously Ensight Short Course Results Data amp Variables provides full support for all types of transient and periodic data including rotational translational and mirror offers built in calculator for calculating new variables from existing ones allows point data from experiments multi phase flow or particle impact simulations with attached scalar and vector variables to be loaded and displayed with or without mesh based results both position and variables may be tr
16. n the Graphics Window i Other buttons open dialogs providing detailed transformation control 6 I EE R ret Transf Edit Z Clip Clicking the left mouse button on an icon selects the feature and opens its basic controls in the Quick Interaction Area Double clicking on an icon brings up a separate Feature Detail Editor dialog which contains more complete controls for the selected feature Ensight Short Course Color Contour Vector Arrows Profile Plot 898 82 5282 Elevated Surface Query Plot Solution Time 9922 72 Interactive Query Isosurface Particle Trace Developed Surface Flipbook Animation Clip CENAS Displacement Keyframe Animation is Contents gt with the currently selected 22 Shown below is the Quick Interaction Area for the Color Parts feature which provides controls for setting the color of the parts currently selected in the Main Parts List Sie ee pa Vector voi Ensight Short Course Mode Icon Bar displays a list of icons associated with the currently selected mode of the interface Shown is the Mode Icon Bar for Part Mode containing icons which control the visibility and display characteristics of individual parts TCP jeg enema p 2 gt 1 Ensight Short Course Transformation Control Area Provides icons which control various aspects of object transformations in
17. nt x y or z plane a box or an i j or k plane that passes through selected model Parts EnSight calculates the values of variables at the nodes of the Clip Ensight Short Course Animation enables animation of particle traces provides animation of plane clips or isosurfaces sweep through a model allows flipbook animation of transient data allows model mesh movement with or without changing topology provides keyframe animation for automated model fly arounds and zooms supports animation recording Ensight Short Course ca sss sss Stand alone Operation Ensight Short Course host2 Distributed Operation EnSight s Client Server Concept The server is generally installed on the more powerful machine and performs I O and CPU intensive tasks Model geometries extracted from input data or computed by the server are sent to the client The client is generally installed on the machine with better graphics performance and renders the geometry to screen Multiple servers up to 8 can be connected to a single client this provides scalability by allovving each server to compute on a different portion of the data Ensight Short Course EnSight at TAMU Currently using version 3 EnSights client and server are both available on
18. of any active variable on any surface individual loops can be labeled enables isosurfaces to be created based on scalar variable vector component vector magnitude or coordinate uses a slider to allow dynamic visualization of a range of isovalues Ensight Short Course allows streamlines pathlines streaklines and surface restricted oil streak traces to be created displays traces as points spheres lines or ribbons allows trace emitters to be built from simple points lines rakes planes net or the nodes of an arbitrary part Ensight Short Course Vector Arrows displays arrows showing direction and magnitude of a vector variable for any part allows control over color scale origin location projection components and arrowhead style provides curved arrows to show the local flow curvature Ensight Short Course projecting away from a parent part provides profile plots as the 2D equivalent of an elevated Surface profiles visualize values of a variable along a line with a variable heightplot Ensight Short Course Cs SYN W E m IT SE ex E SSS AS SORRA BERS SR TS SEM VATO Se RAL X UN PA ESED 1 RR SI Di ibs CE em S W OD NIO Clips Aclipis a straight line a Clip Line a plane a Clip Plane a quadric surface cylinder sphere etc a consta
19. pports immersive VR environments supports VRML JPEG and MPEG output for distributing images and animations via the Internet and intranets outputs advanced Move Draw PostScript encapsulated PostScript and HP GL files with compact high quality images that maintain screen resolution even when resized within other applications also supports RGB PICT and other output formats Ensight Short Course
20. prompt unless it is already in the cshrc file setenv ENSIGHT7 HOME usr local ensight73 setenv ENSIGHT7 ARCH sgi 6 5 n64 setenv ENSIGHT7 INPUT dummy set path path ENSIGHT7 HOME bin Repeat the same in the window for the local workstation In the window with the local prompt type ensight7 client cm In the window of the remote machine type ensight7 server c local workstation name tamu edu Ensight Short Course Recovering from a crash f EnSight crashes while you are working here is how you can recover from it and start from where you left off Every session of EnSight is recorded in what is known as an ensight backup command file When EnSight starts you will see a message similar to the one below on the command line Backup file for this run of EnSightis var tmp ensigCAAaOO3e _ The file varitmp ensigCAAa003e_ is the backup command file When EnSight crashes rename this file and copy it to your current working directory Edit this file to remove the last few lines that probably caused the crash Now Start EnSight again as follows ensight7 p command file name Ensight Short Course Recovering from a crash VERSION 7 10 command delay refresh ON lt _ lt Insert on 2nd line data native binary ON data format case data path usr local ensight 71 data ami data geometry ami case data read data partbuild begin part select default part modify begin part elt repres
21. re similar data sets created from different codes Each new case starts a new server process which connects to your EnSight client Thus cases can be on different machines You may have to start a server manually for each new case Ensight Short Course Frames Frames are 3D coordinate systems vvithin vvhich objects are defined A part is always positioned in the virtual 3D world in reference to its frame All parts are initially assigned to frame 0 You can create new frames and assign one or more parts to them Then you can apply transformations either globally or to individual frames Frames are useful for transforming translating rotating scaling parts independently of each other Symmetry operations reflections about axes are done with respect to a frame s origin Note A part can be assigned to only one frame at a time Ensight Short Course A Tour of the EnSight GUI We will review Where the different user interface components are located and what they do The six modes of the user interface Some User interface conventions Ensight Short Course Message Area 2 2 1 Information Area Button i 1 Click to see information dialog Quick Interaction Area H 00 1 Fog Interface controls associated with the current feature selected from the Feature Icon Bar 1 M
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