Parallel MC with OpenMP#625
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May 27, 2021 12:03
…rithm. A -z configuration would lead to a zero matrix as basis.
…mber of blocks (or exactly one) in each direction. Important for periodic boundary conditions.
GPMueller
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| // TODO: add switch between Metropolis and heat bath | ||
| // One Metropolis step | ||
| Metropolis(spins_old, spins_new); | ||
| Parallel_Metropolis(spins_old, spins_new); |
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Is the parallel implementation slower than the sequential version, when running on a single thread?
- If so, it may make sense to be able to switch between them either dynamically (depending on
omp_num_threads) or statically#ifdef SPIRIT_USE_OPENMP - Otherwise, it would make sense to completely replace the
Metropolisimplementation, right? Then there would also be no need to call itParallel_Metropolis.
| // Metropolis iteration with adaptive cone radius | ||
| void Metropolis(const vectorfield & spins_old, vectorfield & spins_new); | ||
| // Parallel MC | ||
| void Parallel_Metropolis(const vectorfield & spins_old, vectorfield & spins_new); |
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As a reference on the implementation (even though you didn't use it as a basis), you could reference David Bauer's diploma thesis, here or in the class comment
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Implemented Monte-Carlo method with OpenMP parallelization.