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Graph Algorithms

  1. Breadth-First Search
  2. Depth-First Search

Graph Inputs

AdjacencyGraph(Ligra Framework)

  1. Directed/Undirected
  2. Disjoint components

Command to synthesize graph inputs using graph generator from Ligra

Parameters required are No. of vertices and output file name The number of edges by default are 10 times the no. of vertices Below command shows generating a graph input with 1M vertices and filename as rMat_1000000

./rMatGraph 1000000 rMat_1000000

Enabling parallel execution for Ligra, Compiling with OpenMP

#define environment variable, compile the code using make command

$ export OPENMP=1 $ make g++ -fopenmp -march=native -03 -DOPENMP -o BFS BFS.C

##Run the code with different inputs

./BFS -r 1 ../inputs/rMat_1000000