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105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/Test_dwf_mrhs_cg.cc
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid/Grid.h>
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using namespace std;
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using namespace Grid;
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using namespace Grid::QCD;
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int main (int argc, char ** argv)
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{
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typedef LatticeComplex ComplexField;
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Grid_init(&argc,&argv);
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std::vector<int> latt_size = GridDefaultLatt();
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int nd = latt_size.size();
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int ndm1 = nd-1;
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std::vector<int> simd_layout = GridDefaultSimd(nd,vComplex::Nsimd());
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std::vector<int> mpi_layout = GridDefaultMpi();
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std::vector<int> mpi_split (mpi_layout.size(),1);
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std::cout << " Full " << GridCmdVectorIntToString(latt_size) << " subgrid" <<std::endl;
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std::cout << " Full " << GridCmdVectorIntToString(mpi_layout) << " sub communicator"<<std::endl;
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std::cout << " Full " << GridCmdVectorIntToString(simd_layout)<< " simd layout " <<std::endl;
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GridCartesian * GridN = new GridCartesian(latt_size,
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simd_layout,
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mpi_layout);
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std::vector<int> latt_m = latt_size; latt_m[nd-1] = 1;
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std::vector<int> mpi_m = mpi_layout; mpi_m [nd-1] = 1;
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std::vector<int> simd_m = GridDefaultSimd(ndm1,vComplex::Nsimd()); simd_m.push_back(1);
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std::cout << " Requesting " << GridCmdVectorIntToString(latt_m)<< " subgrid" <<std::endl;
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std::cout << " Requesting " << GridCmdVectorIntToString(mpi_m) << " sub communicator"<<std::endl;
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std::cout << " Requesting " << GridCmdVectorIntToString(simd_m)<< " simd layout " <<std::endl;
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GridCartesian * Grid_m = new GridCartesian(latt_m,
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simd_m,
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mpi_m,
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*GridN);
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Complex C(1.0);
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Complex tmp;
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ComplexField Full(GridN); Full = C;
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ComplexField Full_cpy(GridN);
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ComplexField Split(Grid_m);Split= C;
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std::cout << GridLogMessage<< " Full volume "<< norm2(Full) <<std::endl;
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std::cout << GridLogMessage<< " Split volume "<< norm2(Split) <<std::endl;
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tmp=C;
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GridN->GlobalSum(tmp);
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std::cout << GridLogMessage<< " Full nodes "<< tmp <<std::endl;
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tmp=C;
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Grid_m->GlobalSum(tmp);
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std::cout << GridLogMessage<< " Split nodes "<< tmp <<std::endl;
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GridN->Barrier();
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auto local_latt = GridN->LocalDimensions();
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Full_cpy = zero;
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std::vector<int> seeds({1,2,3,4});
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GridParallelRNG RNG(GridN); RNG.SeedFixedIntegers(seeds);
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random(RNG,Full);
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for(int t=0;t<local_latt[nd-1];t++){
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ExtractSliceLocal(Split,Full,0,t,Tp);
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InsertSliceLocal (Split,Full_cpy,0,t,Tp);
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}
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Full_cpy = Full_cpy - Full;
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std::cout << " NormFull " << norm2(Full)<<std::endl;
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std::cout << " NormDiff " << norm2(Full_cpy)<<std::endl;
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Grid_finalize();
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}
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