| 1 |
< |
/* |
| 1 |
> |
/* |
| 2 |
|
* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved. |
| 3 |
|
* |
| 4 |
|
* The University of Notre Dame grants you ("Licensee") a |
| 42 |
|
#include "math/ParallelRandNumGen.hpp" |
| 43 |
|
#ifdef IS_MPI |
| 44 |
|
#include <mpi.h> |
| 45 |
+ |
#endif |
| 46 |
|
|
| 47 |
|
namespace oopse { |
| 48 |
|
|
| 49 |
+ |
int ParallelRandNumGen::nCreatedRNG_ = 0; |
| 50 |
|
|
| 51 |
+ |
ParallelRandNumGen::ParallelRandNumGen(const uint32& oneSeed) { |
| 52 |
|
|
| 53 |
< |
int ParallelRandNumGen::nCreatedRNG_ = 0; |
| 53 |
> |
const int masterNode = 0; |
| 54 |
> |
int seed = oneSeed; |
| 55 |
> |
#ifdef IS_MPI |
| 56 |
> |
MPI_Bcast(&seed, 1, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 57 |
> |
#endif |
| 58 |
> |
if (seed != oneSeed) { |
| 59 |
> |
sprintf(painCave.errMsg, |
| 60 |
> |
"Using different seed to initialize ParallelRandNumGen.\n"); |
| 61 |
> |
painCave.isFatal = 1;; |
| 62 |
> |
simError(); |
| 63 |
> |
} |
| 64 |
|
|
| 52 |
– |
ParallelRandNumGen::ParallelRandNumGen( const uint32& oneSeed) { |
| 53 |
– |
|
| 65 |
|
int nProcessors; |
| 66 |
+ |
#ifdef IS_MPI |
| 67 |
|
MPI_Comm_size(MPI_COMM_WORLD, &nProcessors); |
| 68 |
< |
int newSeed = oneSeed +nCreatedRNG_; |
| 69 |
< |
mtRand_ = new MTRand(newSeed, nProcessors, worldRank); |
| 70 |
< |
|
| 68 |
> |
MPI_Comm_rank( MPI_COMM_WORLD, &myRank_); |
| 69 |
> |
#else |
| 70 |
> |
nProcessors = 1; |
| 71 |
> |
myRank_ = 0; |
| 72 |
> |
#endif |
| 73 |
> |
//In order to generate independent random number stream, the |
| 74 |
> |
//actual seed used by random number generator is the seed passed |
| 75 |
> |
//to the constructor plus the number of random number generators |
| 76 |
> |
//which are already created. |
| 77 |
> |
int newSeed = oneSeed + nCreatedRNG_; |
| 78 |
> |
mtRand_ = new MTRand(newSeed, nProcessors, myRank_); |
| 79 |
> |
|
| 80 |
|
++nCreatedRNG_; |
| 81 |
< |
} |
| 81 |
> |
} |
| 82 |
|
|
| 83 |
< |
ParallelRandNumGen::ParallelRandNumGen() { |
| 83 |
> |
ParallelRandNumGen::ParallelRandNumGen() { |
| 84 |
|
|
| 85 |
|
std::vector<uint32> bigSeed; |
| 86 |
|
const int masterNode = 0; |
| 87 |
|
int nProcessors; |
| 88 |
+ |
#ifdef IS_MPI |
| 89 |
|
MPI_Comm_size(MPI_COMM_WORLD, &nProcessors); |
| 90 |
< |
mtRand_ = new MTRand(nProcessors, worldRank); |
| 90 |
> |
MPI_Comm_rank( MPI_COMM_WORLD, &myRank_); |
| 91 |
> |
#else |
| 92 |
> |
nProcessors = 1; |
| 93 |
> |
myRank_ = 0; |
| 94 |
> |
#endif |
| 95 |
> |
mtRand_ = new MTRand(nProcessors, myRank_); |
| 96 |
|
|
| 97 |
< |
seed(); |
| 98 |
< |
++nCreatedRNG_; |
| 99 |
< |
} |
| 97 |
> |
seed(); /** @todo calling virtual function in constructor is |
| 98 |
> |
not a good design */ |
| 99 |
> |
} |
| 100 |
|
|
| 101 |
|
|
| 102 |
< |
void ParallelRandNumGen::seed( const uint32 oneSeed ) { |
| 102 |
> |
void ParallelRandNumGen::seed( const uint32 oneSeed ) { |
| 103 |
|
|
| 104 |
|
const int masterNode = 0; |
| 105 |
|
int seed = oneSeed; |
| 106 |
+ |
#ifdef IS_MPI |
| 107 |
|
MPI_Bcast(&seed, 1, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 108 |
< |
|
| 108 |
> |
#endif |
| 109 |
|
if (seed != oneSeed) { |
| 110 |
< |
sprintf(painCave.errMsg, |
| 111 |
< |
"Using different seed to initialize ParallelRandNumGen.\n"); |
| 112 |
< |
painCave.isFatal = 1;; |
| 113 |
< |
simError(); |
| 110 |
> |
sprintf(painCave.errMsg, |
| 111 |
> |
"Using different seed to initialize ParallelRandNumGen.\n"); |
| 112 |
> |
painCave.isFatal = 1;; |
| 113 |
> |
simError(); |
| 114 |
|
} |
| 115 |
< |
|
| 115 |
> |
|
| 116 |
|
int newSeed = oneSeed +nCreatedRNG_; |
| 117 |
|
mtRand_->seed(newSeed); |
| 118 |
< |
|
| 118 |
> |
|
| 119 |
|
++nCreatedRNG_; |
| 120 |
< |
} |
| 120 |
> |
} |
| 121 |
|
|
| 122 |
< |
void ParallelRandNumGen::seed() { |
| 122 |
> |
void ParallelRandNumGen::seed() { |
| 123 |
|
|
| 124 |
|
std::vector<uint32> bigSeed; |
| 125 |
|
int size; |
| 126 |
|
const int masterNode = 0; |
| 127 |
+ |
#ifdef IS_MPI |
| 128 |
|
if (worldRank == masterNode) { |
| 129 |
< |
bigSeed = mtRand_->generateSeeds(); |
| 101 |
< |
size = bigSeed.size(); |
| 102 |
< |
MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD); |
| 103 |
< |
MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 129 |
> |
#endif |
| 130 |
|
|
| 131 |
+ |
bigSeed = mtRand_->generateSeeds(); |
| 132 |
+ |
size = bigSeed.size(); |
| 133 |
+ |
|
| 134 |
+ |
#ifdef IS_MPI |
| 135 |
+ |
MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD); |
| 136 |
+ |
MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 137 |
|
}else { |
| 138 |
< |
MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD); |
| 139 |
< |
bigSeed.resize(size); |
| 140 |
< |
MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 138 |
> |
MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD); |
| 139 |
> |
bigSeed.resize(size); |
| 140 |
> |
MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); |
| 141 |
|
} |
| 142 |
+ |
#endif |
| 143 |
|
|
| 144 |
|
if (bigSeed.size() == 1) { |
| 145 |
< |
mtRand_->seed(bigSeed[0]); |
| 145 |
> |
mtRand_->seed(bigSeed[0]); |
| 146 |
|
} else { |
| 147 |
< |
mtRand_->seed(&bigSeed[0], bigSeed.size()); |
| 147 |
> |
mtRand_->seed(&bigSeed[0], bigSeed.size()); |
| 148 |
|
} |
| 149 |
|
|
| 150 |
|
++nCreatedRNG_; |
| 151 |
< |
} |
| 119 |
< |
|
| 120 |
< |
|
| 151 |
> |
} |
| 152 |
|
} |
| 122 |
– |
|
| 123 |
– |
#endif |
