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Installing ns-3.37 and ns-3.35 in Ubuntu | Ubuntu 22.04 | NS3

Multiple Versions of ns3 in Ubuntu 22.04 In this post, we are going to install two versions of ns3 namely ns-3.35 and ns-3.37  My OS is : Ubuntu 22.04 LTS (Long Term Support) ns-3.35 uses waf and (./waf --run scratch/first)  ns-3.37 uses cmake  (./ns3 run scratch/first.cc) So we will install both the packages  Go through the video for complete instructions To start with  $ sudo apt update  $ sudo apt install build-essential autoconf automake libxmu-dev g++ python3 python3-dev pkg-config sqlite3 cmake python3-setuptools git qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 openmpi-bin openmpi-common openmpi-doc libopenmpi-dev autoconf cvs bzr unrar gsl-bin libgsl-dev libgslcblas0 wireshark tcpdump sqlite sqlite3 libsqlite3-dev  libxml2 libxml2-dev libc6-dev libc6-dev-i386 libclang-dev llvm-dev automake python3-pip libxml2 libxml2-dev libboost-all-dev  I have downloaded both the versions of ns3 fr

Program Modelling Concepts

Modelling Processes for Software Analysis before Software Implementation
Data Flow Graph (DFG)
  • Data Flow Graph (DFG) as the name says only the data which is flowing in to a process taken into account. for example going to a bank for depositing the cash includes the data 1) input is account number and 2) output data is balance in the account.
  • Other examples: Finding the average marks scored by a student: the input data is grades or marks scored and output data is the average grades or marks. the process is the (sum/total number of subjects).
  • usually the input data is fed in to a process and output data comes after processing the input data.
  • DFG does not have any conditions within it, but has only data entry point and one data output entry point.
  • When there is only one set of values of each of the inputs and only one set of values of the outputs for the given input, a DFG is also known to be Acrylic Data Flow Graph (ADFG)
  • Example of ADFG: In an FIR Filter with
  • y6=a0x6+a1x5+......+a6x0, in this equation for a FIR filter, there are 7 multiplication units , each consumes only one memory to store and has only one value, i.e x0.....x6 has one value and a0, a1....a6 each has one value, so a0x6,.......a6x0 each will also have one value and y6 is also have only one value. So this example comes under ADFG
  • But the examples of Non Acrylic DFG includes 1) A status flag setting in a device 2) Input as per output condition of the previous process


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