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74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/Test_poisson_fft.cc
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Copyright (C) 2015
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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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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#include <Grid/lattice/Lattice_slice_gpu.h>
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using namespace Grid;
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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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int N=16;
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std::vector<int> latt_size ({N,N,N,N});
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std::vector<int> simd_layout({vComplexD::Nsimd(),1,1,1});
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std::vector<int> mpi_layout ({1,1,1,1});
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GridCartesian GRID(latt_size,simd_layout,mpi_layout);
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LatticeComplexD rn(&GRID);
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GridParallelRNG RNG(&GRID);
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RNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
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gaussian(RNG,rn);
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std::vector<TComplex> reduced_ref;
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std::vector<TComplex> reduced_gpu;
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for(int d=0;d<4;d++){
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{
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RealD t=-usecond();
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sliceSum(rn,reduced_ref,d);
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t+=usecond();
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std::cout << " sliceSum took "<<t<<" usecs"<<std::endl;
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}
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{
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RealD t=-usecond();
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sliceSumGpu(rn,reduced_gpu,d);
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t+=usecond();
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std::cout << " sliceSumGpu took "<<t<<" usecs"<<std::endl;
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}
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for(int t=0;t<reduced_ref.size();t++){
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std::cout << t<<" ref "<< reduced_ref[t] <<" opt " << reduced_gpu[t] << " diff "<<reduced_ref[t]-reduced_gpu[t]<<std::endl;
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TComplex diff = reduced_ref[t]-reduced_gpu[t];
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assert(abs(TensorRemove(diff)) < 1e-8 );
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}
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}
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Grid_finalize();
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}
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