iFogSimOffload

This is an extension of iFogSim that makes it possible to simulate and evaluate data offloading strategies in context of Fog computing and IoT.

Install and run

• Download and install Metis
  • Change IDXTYPEWIDTH and REALTYPEWIDTH to 64 at include/metis.h
  • Run: make config shared=1 prefix=./precompiled && make && make install
  • Add to LD_LIBRARY_PATH (e.g.: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/metis-5.1.0/build/Linux-x86_64/precompiled/lib)
• Download and install CPLEX
  • CPLEX Community
    • Add to LD_LIBRARY_PATH (e.g.: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/ibm/ILOG/CPLEX_Studio_Community201/cplex/bin/x86-64_linux)
    • Some constants must be exchanged at DataPlacement class (marked with TODO)
  • CPLEX Academic (follow licence instructions)
    • Add to LD_LIBRARY_PATH (e.g.: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/ibm/ILOG/CPLEX_Studio201/cplex/bin/x86-64_linux)
• Import CPLEX /opt/ibm/ILOG/CPLEX_Studio201/cplex/lib/cplex.jar to local Maven (e.g.: mvn install:install-file -Dpackaging=jar -DgeneratePom=true -Dfile=cplex.jar -DgroupId=ilog -DartifactId=cplex -Dversion=20.1.0.0)
• Build: mvn clean install (no jars folder needed)
• Run: java -jar -Xmx4096m target/ifogsim-jar-with-dependencies.jar

Scripts

• rm.sh: removes simulation temp files
• bk.sh: backup all simulation temp files
• stats.py: generates simulation summaries and plots
• pidstat.sh: analyse CPU and memory usage with pidstat (part of sysstat tools) - needs simulation running

iFogSimWithDataPlacement (upstream)

This is an extension of iFogSim that makes it possible to simulate and evaluate data placement strategies in context of Fog computing and IoT. This extension uses two external tools: 1- Cplex to compute the data placement which is formulated as a Generalized Assignement Problem (GAP) 2- Metis to partition a graph which models the simulated infrastructure into k-partitions. This is in order to conceive several data placement sub problems hence reducing the overall problem complexity.

This extension involves several data placement strategies: storageModes = Arrays.asList(CloudStorage,ClosestNode,FogStorage,ZoningStorage,GraphPartitionStorage);

FogStorage and ZoningStorage require CPLEX installation and setups, and GraphPartitionStorage requires Metis installation.

For test, you can set storageModes = Arrays.asList(CloudStorage,ClosestNode,FogStorage,ZoningStorage,GraphPartitionStorage);

The path of the main class is: src/org/fog/examples/DataPlacement.java

Next, various configurations and setups to reuse this extension, are shown.
1- Clone this repository in your machine.
2- Install Cplex: there is a free acadimique version.
3- Add the Cplex Jar:
4- Install Metis.