Changes between Version 2 and Version 3 of WiMAX/WiMAX-Tutorial/Dash/05


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Timestamp:
07/22/13 20:07:27 (6 years ago)
Author:
Fraida Fund
Comment:

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  • WiMAX/WiMAX-Tutorial/Dash/05

    v2 v3  
    11'''[wiki:WiMAX/WiMAX-Tutorial/Dash/04 Previous]'''
    2 
    3 == Writing the Experiment Script ==
    4 
    5 While the disk image is loading onto his nodes, he prepares an experiment script. This script describes the configuration of all the OMF-enabled resources in the experiment, and the sequence of events in the experiment.
    6 
    7 The experiment script is given here:
    8 
    9 {{{
    10 #!ruby
    11 defProperty('hrnSuffix', ".outdoor.orbit-lab.org", "Suffix to use for the HRN of resources")
    12 defProperty('hrnPrefix', "node1-", "Prefix to use for the HRN of resources")
    13 defProperty('serverNum', "5", "Server's node number:x-y")
    14 defProperty('rxNum', "3", "Receiver's node number:x-y")
    15 defProperty('duration', 100, "Duration of experiment")
    16 defProperty('serverURL', "http://10.41.41.#{property.serverNum}/", "server's url")
    17 defProperty('inputPath', "dash_lo/www-itec.uni-klu.ac.at/ftp/datasets/mmsys12/BigBuckBunny/bunny_2s_480p_only/bunny_Desktop.mpd", "Path of the Media Presentation Description File")
    18 
    19 defGroup("Server", "#{property.hrnPrefix}#{property.serverNum}#{property.hrnSuffix}") do |node|
    20   node.net.e0.ip = '10.41.41.%y%'
    21   node.net.e0.netmask = "255.255.0.0"
    22 end
    23 
    24 defGroup("Receiver", "#{property.hrnPrefix}#{property.rxNum}#{property.hrnSuffix}") do |node|
    25   node.net.x0.profile = '51'
    26   node.net.x0.ip = '10.41.41.%y%'
    27   node.net.x0.netmask = "255.255.0.0"
    28   node.addApplication('vlc-dash', :id => 'vlc') do |app|
    29     app.setProperty('quiet', true)
    30     app.setProperty('play-and-exit', true)
    31     app.setProperty('intf', 'dummy')
    32     app.setProperty('redirect', true)
    33     app.setProperty('input', "http://10.41.41.#{property.serverNum}/#{property.inputPath}")
    34     app.setProperty('sout', "''#duplicate{dst=display,dst=std{access=file,mux=ts,dst=/root/#{Experiment.ID}.mp4}}''")
    35     app.measure('dashRateAdaptation', :samples =>1)
    36     app.measure('dashDlSession', :samples =>1)
    37   end
    38   node.addApplication('wmxstat_universal', :id => 'wmxstat') do |app|
    39     app.measure('status')
    40   end
    41 end
    42 
    43 
    44 
    45 onEvent(:ALL_UP_AND_INSTALLED) do |event|
    46   system("/usr/local/bin/getbsconf -i wimaxrf --oml-collect tcp:oml:3004 --oml-id console --oml-domain #{Experiment.ID}")
    47   wait 5
    48   group("Server").exec("/etc/init.d/apache2 start")
    49   wait 10
    50   group("Receiver").startApplication('wmxstat')
    51   group("Receiver").startApplication('vlc')
    52   wait property.duration
    53   group("Receiver").stopApplications
    54   system("/usr/bin/ssh root@#{property.hrnPrefix}#{property.rxNum} '/usr/local/bin/iput /root/#{Experiment.ID}.mp4 dash'")
    55   wait 10
    56   group("Server").exec("/etc/init.d/apache2 stop")
    57   wait 10
    58   Experiment.done
    59 end
    60 
    61 
    62 
    63 }}}
    64 
    65 [[br]]
    66 > '''Deconstructing the experiment script''': [[br]]
    67 > Every OMF-enabled node in the experiment (purple node) is represented by a "defGroup" stanza. [[br]]
    68 > Every OML-enabled application that runs on an OMF node is represented by an "addApplication" stanza within the "defGroup"
    692
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