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RNG test

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This commit is contained in:
Peter Boyle 2015-05-13 09:24:30 +01:00
parent add4495a4a
commit e6e72d23df
1 changed files with 51 additions and 0 deletions
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tests/Grid_rng.cc Normal file
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#include <Grid.h>
#include <parallelIO/GridNerscIO.h>
using namespace std;
using namespace Grid;
using namespace Grid::QCD;
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
std::vector<int> latt_size = GridDefaultLatt();
std::vector<int> simd_layout = GridDefaultSimd(4,vComplexF::Nsimd());
std::vector<int> mpi_layout = GridDefaultMpi();
GridCartesian Grid(latt_size,simd_layout,mpi_layout);
std::vector<int> seeds({1,2,3,4});
GridSerialRNG sRNG; sRNG.SeedRandomDevice();
GridSerialRNG fsRNG; fsRNG.SeedFixedIntegers(seeds);
GridParallelRNG pRNG(&Grid); pRNG.SeedRandomDevice();
GridParallelRNG fpRNG(&Grid); fpRNG.SeedFixedIntegers(seeds);
SpinMatrix rnd ;
random(sRNG,rnd);
std::cout<<"Random Spin Matrix (random_device)\n"<< rnd<<std::endl;
random(fsRNG,rnd);
std::cout<<"Random Spin Matrix (fixed seed)\n"<< rnd<<std::endl;
SpinVector rv;
random(sRNG,rv);
std::cout<<"Random Spin Vector (random device)\n"<< rv<<std::endl;
random(fsRNG,rv);
std::cout<<"Random Spin Vector (fixed seed)\n"<< rv<<std::endl;
gaussian(fsRNG,rv);
std::cout<<"Gaussian Spin Vector (fixed seed)\n"<< rv<<std::endl;
LatticeColourVector lcv(&Grid);
random(pRNG,lcv);
std::cout<<"Random Lattice Colour Vector (random device)\n"<< lcv<<std::endl;
random(fpRNG,lcv);
std::cout<<"Random Lattice Colour Vector (fixed seed)\n"<< lcv<<std::endl;
Grid_finalize();
}