A Julia wrapper for the Concorde TSP Solver.
Author chkwon
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Updated Last
3 Months Ago
Started In
February 2021


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A Julia wrapper for the Concorde TSP Solver.


This Concorde.jl package is in MIT License. However, the underlying Concorde solver is available for free only for academic research as described in the Concorde website.


] add Concorde

Currently, this package works in 64-bit operations systems of Windows 10, macOS, and Ubuntu.


Only symmetric problems are supported.

Using a distance matrix

M = [
     0  16   7  14
    16   0   3   5
     7   3   0  16
    14   5  16   0 
opt_tour, opt_len = solve_tsp(M)

The distance matrix M must be integer-valued.

Using coordinates

n_nodes = 10
x = rand(n_nodes) .* 10000
y = rand(n_nodes) .* 10000
opt_tour, opt_len = solve_tsp(x, y; dist="EUC_2D")

where dist is a choice of the distance function.

Available dist functions are listed in TSPLIB_DOC.pdf. (Some may have not been implemented in this package.)

Using an input file

Using the TSPLIB format:

opt_tour, opt_len = solve_tsp("gr17.tsp")

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