applications/test/speed/vectorSpeedTest/vectorSpeedTest.C

   1 #include "primitiveFields.H"
   2 #include "cpuTime.H"
   3 #include "IOstreams.H"
   4 #include "OFstream.H"
   5
   6 using namespace Foam;
   7
   8 int main()
   9 {
  10     const label nIter = 100;
  11     const label size = 1000000;
  12
  13     Info<< "Initialising fields" << endl;
  14
  15     vectorField
  16         vf1(size, vector::one),
  17         vf2(size, vector::one),
  18         vf3(size, vector::one),
  19         vf4(size);
  20
  21     Info<< "Done\n" << endl;
  22
  23     {
  24         cpuTime executionTime;
  25
  26         Info<< "vectorField algebra" << endl;
  27
  28         for (register int j=0; j<nIter; j++)
  29         {
  30             vf4 = vf1 + vf2 - vf3;
  31         }
  32
  33         Info<< "ExecutionTime = "
  34             << executionTime.elapsedCpuTime()
  35             << " s\n" << endl;
  36
  37         Snull<< vf4[1] << endl << endl;
  38     }
  39 }