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LAP7454 - Computation Log
Instance Created: April 26, 2002
Number of Cities: 7454
Optimal Value: 19535
Solved: April 5, 2017
||19538 - Best of 10 runs of LKH, each with n trials. Total running time 28597 seconds on an AMD Althlon 1900+ processor (1.6 GHz).
||19535 - Found by Keld Helsgaun,
using a variant of LKH.
||19535 - Concorde -Z1 -J4 (with domino-parity inequalities). Run on a network of four machines, each with two 6-core Intel Xeon E5-2620 @ 2.00GHz processors. Wall clock time 5 hours, 53 minutes (for branch-and-cut search)
1. Concorde is our linear-programming based TSP solver.
2. linkern is an implementation of Martin, Otto, and Felten's Chained Lin-Kernighan heuristic. It is included in the Concorde code.
3. LKH is Keld Helsgaun's powerful implementation of the Lin-Kernighan heuristic.
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Last Updated: April 17, 2017