Creation of OpenFOAM-dev repository 15/04/2008

applications/test/speed/Make/files

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+speedTest.C
+
+EXE = $(FOAM_USER_APPBIN)/speedTest

applications/test/speed/speedTest.C

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+#include "primitiveFields.H"
+#include "cpuTime.H"
+#include "IOstreams.H"
+
+using namespace Foam;
+
+int main()
+{
+    const label nIter = 10;
+    const label size = 10000000;
+
+    double* f1 = new double[size];
+    double* f2 = new double[size];
+    double* f3 = new double[size];
+    double* f4 = new double[size];
+
+    for (register label i=0; i<size; i++)
+    {
+        f1[i] = 1.0;
+        f2[i] = 1.0;
+        f3[i] = 1.0;
+    }
+
+    cpuTime executionTime1;
+
+    for (int j=0; j<nIter; j++)
+    {
+        for (register label i=0; i<size; i++)
+        {
+            f4[i] = f1[i] + f2[i] - f3[i];
+        }
+    }
+
+    Info<< "ExecutionTime = "
+        << executionTime1.elapsedCpuTime()
+        << " s\n" << endl;
+
+    Info << f4[1] << endl << endl;
+
+
+    scalarField sf1(size, 1.0), sf2(size, 1.0), sf3(size, 1.0), sf4(size);
+
+    cpuTime executionTime2;
+
+    for (register int j=0; j<nIter; j++)
+    {
+        sf4 = sf1 + sf2 - sf3;
+        //sf4 = sf1;
+        //sf4 += sf2;
+        //sf4 -= sf3;
+    }
+
+    Info<< "ExecutionTime = "
+        << executionTime2.elapsedCpuTime()
+        << " s\n" << endl;
+
+    Info << sf4[1] << endl << endl;
+
+
+    vectorField 
+        vf1(size, vector::one),
+        vf2(size, vector::one),
+        vf3(size, vector::one),
+        vf4(size);
+
+    cpuTime executionTime3;
+
+    for (register int j=0; j<nIter; j++)
+    {
+        vf4 = vf1 + vf2 - vf3;
+    }
+
+    Info<< "ExecutionTime = "
+        << executionTime3.elapsedCpuTime()
+        << " s\n" << endl;
+
+    Info << vf4[1] << endl << endl;
+
+    cpuTime executionTime4;
+
+    scalarField sf11(size, 1.0), sf12(size, 1.0), sf13(size, 1.0), sf14(size);
+    scalarField sf21(size, 1.0), sf22(size, 1.0), sf23(size, 1.0), sf24(size);
+    scalarField sf31(size, 1.0), sf32(size, 1.0), sf33(size, 1.0), sf34(size);
+
+    for (register int j=0; j<nIter; j++)
+    {
+        sf14 = sf11 + sf12 - sf13;
+        sf24 = sf21 + sf22 - sf23;
+        sf34 = sf31 + sf32 - sf33;
+    }
+
+    Info<< "ExecutionTime = "
+        << executionTime4.elapsedCpuTime()
+        << " s\n" << endl;
+
+    Info << sf14[1] << sf24[1] << sf34[1] << endl << endl;
+
+
+}