Remote Visualization of Large Multi-dimensional Radio Astronomy - - PowerPoint PPT Presentation

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Remote Visualization of Large Multi-dimensional Radio Astronomy Data Sets Pavol Federl Institute for Space Imaging Science University of Calgary Thursday 26 January 2012 CyberSKA www.cyberska.org develop (cyber)

SLIDE 1

Remote Visualization of Large Multi-dimensional Radio Astronomy Data Sets

Pavol Federl

Institute ¡for ¡Space ¡Imaging ¡Science University ¡of ¡Calgary

Thursday 26 January 2012

SLIDE 2

CyberSKA

www.cyberska.org

develop (cyber) infrastructure for SKA
collaboration portal
applications accessible online
minimal software & hardware requirements

for client side (browser and internet)

Thursday 26 January 2012

SLIDE 3

the problem

server big file user internet

Thursday 26 January 2012

SLIDE 4

the problem

server big file user internet

Thursday 26 January 2012

SLIDE 5

existing solutions

file transfer
not easy for ‘very’ large files
remote X11 and

VNC

permissions & security
resource allocations
integration with web
interactivity

Thursday 26 January 2012

SLIDE 6

CyberSKA approach

clients sites

Thursday 26 January 2012

SLIDE 7

CyberSKA approach

clients sites portal

Thursday 26 January 2012

SLIDE 8

client-side viewer

last year ADASS
client-side visualization tool
downloads portions of FITS file
all processing & visualization done in browser
JavaScript & HTML5

Thursday 26 January 2012

SLIDE 9

client-side viewer

Thursday 26 January 2012

SLIDE 10

client-side viewer

users asked for more features
faster startup
handle larger files
profiles along X,

Y and Z axis

playing movies along 3rd axis

Thursday 26 January 2012

SLIDE 11

server-side visualization

some tasks must be done server-side
might as well do them all on server
client handles GUI (thin client)
server does all computation and rendering
server “tells” client what to render

Thursday 26 January 2012

SLIDE 12

server client

general idea

colormap = “heat” JPEG

recomputes image compresses to JPEG sends JPEG to clients

Thursday 26 January 2012

SLIDE 13

monitor & load balancer node 1 node 2 node 3 node 4

visualization cluster

implementation

client

distributed file system

CyberSka portal

apache web server

Thursday 26 January 2012

SLIDE 14

monitor & load balancer node 1 node 2 node 3 node 4

visualization cluster

implementation

client

distributed file system

CyberSka portal

apache web server

Thursday 26 January 2012

SLIDE 15

monitor & load balancer node 1 node 2 node 3 node 4

visualization cluster

implementation

client

distributed file system

CyberSka portal

apache web server

Thursday 26 January 2012

SLIDE 16

monitor & load balancer node 1 node 2 node 3 node 4

visualization cluster

implementation

client

distributed file system

CyberSka portal

apache web server

Thursday 26 January 2012

SLIDE 17

monitor & load balancer node 1 node 2 node 3 node 4

visualization cluster

implementation

client

distributed file system

CyberSka portal

apache web server

Thursday 26 January 2012

SLIDE 18

PureWeb client PureWeb platform

PureWeb

by Calgary Scientific

Desktop application logic / engine GUI logic / engine

Thursday 26 January 2012

SLIDE 19

server-side viewer

Thursday 26 January 2012

SLIDE 20

future work

parallel processing and rendering
experiment with MPEG vs JPG
switch from flash to HTML5

Thursday 26 January 2012

SLIDE 21

Thank you.

Thursday 26 January 2012

SLIDE 22

implementation

client code

utgoing

queue incoming queue server code

utgoing

queue incoming queue

Thursday 26 January 2012