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This commit is contained in:
chriseth 2022-02-03 16:26:41 +01:00
parent 592b421f44
commit 8835b95719
2 changed files with 5 additions and 0 deletions
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3
libsolutil/LP.cpp
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@ -760,6 +760,9 @@ pair<LPResult, map<string, rational>> LPSolver::check(SolvingState _state)
LPResult lpResult;
vector<rational> solution;
// TODO this actually compares including the variable names.
// If we only compare based on coefficients, we will get way more cache hits.
// The downside is that we need to adjust the model.
auto it = m_cache.find(split);
if (it != m_cache.end())
tie(lpResult, solution) = it->second;

2
libsolutil/LP.h
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@ -161,6 +161,8 @@ public:
private:
// TODO check if the model is requested in production. If not, we do not need to cache it.
// TODO This cache is inefficient because it compares including the variable names.
// See comment in LPSolver::check for details.
std::map<SolvingState, std::pair<LPResult, std::vector<boost::rational<bigint>>>> m_cache;
};