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Fast Downward uses the [[http://www.coin-or.org/|COIN-OR]] LP Solver ([[http://www.coin-or.org/Clp/|CLP]]) with the [[https://projects.coin-or.org/Osi|Open Solver Interface]].
To use the LP solver (for example, for optimal cost partitioning of landmarks heuristic), follow these instructions:

== Instructions for Building Fast Downward with LP Solver ==

* Go to downward/search/lp/

* run ./setup (this will build the LP solver, this might take a few minutes)

* In downward/search, give the USE_LP_CLP=1 flag to make (make USE_LP_CLP=1 or make USE_LP_CLP=1 release)