Fused innerProduct + norm2 on first argument operation

2025-06-12 20:27:06 +01:00 · 2020-04-06 11:30:50 +02:00
parent 856d168e41
commit 5fc8a273e7
2 changed files with 183 additions and 1 deletions
--- a/tests/Test_innerproduct_norm.cc
+++ b/tests/Test_innerproduct_norm.cc
@ -0,0 +1,126 @@
+/*************************************************************************************
+
+Grid physics library, www.github.com/paboyle/Grid
+
+Source file: ./tests/Test_innerproduct_norm.cc
+
+Copyright (C) 2015
+
+Author: Daniel Richtmann <daniel.richtmann@ur.de>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+See the full license in the file "LICENSE" in the top level distribution directory
+*************************************************************************************/
+/*  END LEGAL */
+#include <Grid/Grid.h>
+
+using namespace Grid;
+
+int main(int argc, char** argv) {
+  Grid_init(&argc, &argv);
+
+  const int nIter = 100;
+
+  // clang-format off
+  GridCartesian *Grid_d = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd, vComplexD::Nsimd()), GridDefaultMpi());
+  GridCartesian *Grid_f = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd, vComplexF::Nsimd()), GridDefaultMpi());
+  // clang-format on
+
+  GridParallelRNG pRNG_d(Grid_d);
+  GridParallelRNG pRNG_f(Grid_f);
+
+  std::vector<int> seeds_d({1, 2, 3, 4});
+  std::vector<int> seeds_f({5, 6, 7, 8});
+
+  pRNG_d.SeedFixedIntegers(seeds_d);
+  pRNG_f.SeedFixedIntegers(seeds_f);
+
+  // clang-format off
+  LatticeFermionD x_d(Grid_d); random(pRNG_d, x_d);
+  LatticeFermionD y_d(Grid_d); random(pRNG_d, y_d);
+  LatticeFermionF x_f(Grid_f); random(pRNG_f, x_f);
+  LatticeFermionF y_f(Grid_f); random(pRNG_f, y_f);
+  // clang-format on
+
+  GridStopWatch sw_ref;
+  GridStopWatch sw_res;
+
+  { // double precision
+    ComplexD ip_d_ref, ip_d_res, diff_ip_d;
+    RealD    norm2_d_ref, norm2_d_res, diff_norm2_d;
+
+    sw_ref.Reset();
+    sw_ref.Start();
+    for(int i = 0; i < nIter; ++i) {
+      ip_d_ref    = innerProduct(x_d, y_d);
+      norm2_d_ref = norm2(x_d);
+    }
+    sw_ref.Stop();
+
+    sw_res.Reset();
+    sw_res.Start();
+    for(int i = 0; i < nIter; ++i) { innerProduct_norm(ip_d_res, norm2_d_res, x_d, y_d); }
+    sw_res.Stop();
+
+    diff_ip_d    = ip_d_ref - ip_d_res;
+    diff_norm2_d = norm2_d_ref - norm2_d_res;
+
+    // clang-format off
+    std::cout << GridLogMessage << "Double: ip_ref = " << ip_d_ref << " ip_res = " << ip_d_res << " diff = " << diff_ip_d << std::endl;
+    std::cout << GridLogMessage << "Double: norm2_ref = " << norm2_d_ref << " norm2_res = " << norm2_d_res << " diff = " << diff_norm2_d << std::endl;
+    std::cout << GridLogMessage << "Double: time_ref = " << sw_ref.Elapsed() << " time_res = " << sw_res.Elapsed() << std::endl;
+    // clang-format on
+
+    assert(diff_ip_d == 0.);
+    assert(diff_norm2_d == 0.);
+
+    std::cout << GridLogMessage << "Double: all checks passed" << std::endl;
+  }
+
+  { // single precision
+    ComplexD ip_f_ref, ip_f_res, diff_ip_f;
+    RealD    norm2_f_ref, norm2_f_res, diff_norm2_f;
+
+    sw_ref.Reset();
+    sw_ref.Start();
+    for(int i = 0; i < nIter; ++i) {
+      ip_f_ref    = innerProduct(x_f, y_f);
+      norm2_f_ref = norm2(x_f);
+    }
+    sw_ref.Stop();
+
+    sw_res.Reset();
+    sw_res.Start();
+    for(int i = 0; i < nIter; ++i) { innerProduct_norm(ip_f_res, norm2_f_res, x_f, y_f); }
+    sw_res.Stop();
+
+    diff_ip_f    = ip_f_ref - ip_f_res;
+    diff_norm2_f = norm2_f_ref - norm2_f_res;
+
+    // clang-format off
+    std::cout << GridLogMessage << "Single: ip_ref = " << ip_f_ref << " ip_res = " << ip_f_res << " diff = " << diff_ip_f << std::endl;
+    std::cout << GridLogMessage << "Single: norm2_ref = " << norm2_f_ref << " norm2_res = " << norm2_f_res << " diff = " << diff_norm2_f << std::endl;
+    std::cout << GridLogMessage << "Single: time_ref = " << sw_ref.Elapsed() << " time_res = " << sw_res.Elapsed() << std::endl;
+    // clang-format on
+
+    assert(diff_ip_f == 0.);
+    assert(diff_norm2_f == 0.);
+
+    std::cout << GridLogMessage << "Single: all checks passed" << std::endl;
+  }
+
+  Grid_finalize();
+}