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#include "math/ParallelRandNumGen.hpp" |
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#ifdef IS_MPI |
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#include <mpi.h> |
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#endif |
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namespace oopse { |
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int ParallelRandNumGen::nCreatedRNG_ = 0; |
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< |
ParallelRandNumGen::ParallelRandNumGen( const uint32& oneSeed) { |
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ParallelRandNumGen::ParallelRandNumGen(const uint32& oneSeed) { |
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const int masterNode = 0; |
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int seed = oneSeed; |
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#ifdef IS_MPI |
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MPI_Bcast(&seed, 1, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
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#endif |
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if (seed != oneSeed) { |
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sprintf(painCave.errMsg, |
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"Using different seed to initialize ParallelRandNumGen.\n"); |
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} |
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int nProcessors; |
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#ifdef IS_MPI |
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MPI_Comm_size(MPI_COMM_WORLD, &nProcessors); |
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MPI_Comm_rank( MPI_COMM_WORLD, &myRank_); |
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//In order to generate independent random number stream, the actual seed used by random |
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//number generator is the seed passed to the constructor plus the number of random number |
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//generators which are already created. |
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#else |
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nProcessors = 1; |
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myRank_ = 0; |
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#endif |
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//In order to generate independent random number stream, the |
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//actual seed used by random number generator is the seed passed |
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//to the constructor plus the number of random number generators |
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//which are already created. |
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int newSeed = oneSeed + nCreatedRNG_; |
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mtRand_ = new MTRand(newSeed, nProcessors, myRank_); |
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> |
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++nCreatedRNG_; |
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} |
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std::vector<uint32> bigSeed; |
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const int masterNode = 0; |
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int nProcessors; |
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+ |
#ifdef IS_MPI |
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MPI_Comm_size(MPI_COMM_WORLD, &nProcessors); |
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MPI_Comm_rank( MPI_COMM_WORLD, &myRank_); |
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#else |
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nProcessors = 1; |
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myRank_ = 0; |
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#endif |
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mtRand_ = new MTRand(nProcessors, myRank_); |
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|
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< |
seed(); /** @todo calling virtual function in constructor is not a good design */ |
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> |
seed(); /** @todo calling virtual function in constructor is |
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> |
not a good design */ |
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} |
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const int masterNode = 0; |
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int seed = oneSeed; |
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#ifdef IS_MPI |
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MPI_Bcast(&seed, 1, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
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> |
#endif |
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if (seed != oneSeed) { |
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sprintf(painCave.errMsg, |
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"Using different seed to initialize ParallelRandNumGen.\n"); |
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painCave.isFatal = 1;; |
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simError(); |
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} |
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> |
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int newSeed = oneSeed +nCreatedRNG_; |
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mtRand_->seed(newSeed); |
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> |
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++nCreatedRNG_; |
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} |
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std::vector<uint32> bigSeed; |
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int size; |
| 126 |
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const int masterNode = 0; |
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+ |
#ifdef IS_MPI |
| 128 |
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if (worldRank == masterNode) { |
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+ |
#endif |
| 130 |
+ |
|
| 131 |
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bigSeed = mtRand_->generateSeeds(); |
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size = bigSeed.size(); |
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|
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+ |
#ifdef IS_MPI |
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MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD); |
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MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
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}else { |
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MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD); |
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bigSeed.resize(size); |
| 140 |
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MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 141 |
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} |
| 142 |
+ |
#endif |
| 143 |
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|
| 144 |
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if (bigSeed.size() == 1) { |
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mtRand_->seed(bigSeed[0]); |
| 148 |
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} |
| 149 |
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| 150 |
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++nCreatedRNG_; |
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< |
} |
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< |
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< |
|
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> |
} |
| 152 |
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} |
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– |
|
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– |
#endif |
