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Store random seeds in vector #4

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Store random seeds in vector #4

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9 changes: 4 additions & 5 deletions src/kernel/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -222,25 +222,24 @@ int main(int argn,char* args[]) {
if (randomSeed == 0) randomSeed = time(NULL);
if (initialized == true) {
// Master process calculates a random number seed for each process:
int* seeds = NULL;
vector<int> seeds;
if (objectWrapper.sim.mpiRank == objectWrapper.sim.MASTER_RANK) {
objectWrapper.simClasses.logger << "(MAIN) Master process generating random number generator seeds ";
objectWrapper.simClasses.logger << " using initial seed " << randomSeed << endl;
seeds = new int[objectWrapper.sim.mpiProcesses];
seeds.resize(objectWrapper.sim.mpiProcesses);
srand(randomSeed);
for (int p=0; p<objectWrapper.sim.mpiProcesses; ++p) {
seeds[p] = rand();
objectWrapper.simClasses.logger << "\t P#" << p << "\t seed: " << seeds[p] << endl;
}
}
MPI_Scatter(seeds,1,MPI_Type<int>(),&randomSeed,1,MPI_Type<int>(),objectWrapper.sim.MASTER_RANK,objectWrapper.sim.comm);
MPI_Scatter(seeds.data(),1,MPI_Type<int>(),&randomSeed,1,MPI_Type<int>(),objectWrapper.sim.MASTER_RANK,objectWrapper.sim.comm);

objectWrapper.simClasses.logger << "(MAIN) Received random seed " << randomSeed << " from master process" << endl;
if (objectWrapper.simClasses.random.initialize(randomSeed) == false) {
objectWrapper.simClasses.logger << "(MAIN) ERROR: Failed to initialize random number generator!" << endl << write;
initialized = false;
}
delete [] seeds; seeds = NULL;
}
}

// Init parallel grid
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