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// In KAI C++ 3.2, restrict causes problems for copy propagation.
// Temporary fix: disable restrict
#define BZ_DISABLE_RESTRICT
#include <blitz/vector.h>
#include <blitz/array.h>
#include <blitz/rand-uniform.h>
#include <blitz/benchext.h>
#ifdef BZ_HAVE_VALARRAY
#define BENCHMARK_VALARRAY
#endif
#ifdef BENCHMARK_VALARRAY
#include <valarray>
#endif
BZ_USING_NAMESPACE(blitz)
#if defined(BZ_FORTRAN_SYMBOLS_WITH_TRAILING_UNDERSCORES)
#define loop4_f77 loop4_f77_
#define loop4_f90 loop4_f90_
#elif defined(BZ_FORTRAN_SYMBOLS_WITH_DOUBLE_TRAILING_UNDERSCORES)
#define loop4_f77 loop4_f77__
#define loop4_f90 loop4_f90__
#elif defined(BZ_FORTRAN_SYMBOLS_CAPS)
#define loop4_f77 LOOP4_F77
#define loop4_f90 LOOP4_F90
#endif
extern "C" {
void loop4_f77(const int& niters, const int& N, double* x, double* a, double* b);
void loop4_f90(const int& niters, const int& N, double* x, double* a, double* b);
}
void VectorVersion(BenchmarkExt<int>& bench);
void ArrayVersion(BenchmarkExt<int>& bench);
void F77Version(BenchmarkExt<int>& bench);
void F90Version(BenchmarkExt<int>& bench);
#ifdef BENCHMARK_VALARRAY
void ValarrayVersion(BenchmarkExt<int>& bench);
#endif
int main()
{
#ifdef BENCHMARK_VALARRAY
int numBenchmarks = 5;
#else
int numBenchmarks = 4;
#endif
BenchmarkExt<int> bench("$x=$a+$b", numBenchmarks);
const int numSizes = 19;
bench.setNumParameters(numSizes);
bench.setRateDescription("Mflops/s");
Vector<int> parameters(numSizes);
Vector<long> iters(numSizes);
Vector<double> flops(numSizes);
for (int i=0; i < numSizes; ++i)
{
parameters[i] = pow(10.0, (i+1)/4.0);
iters[i] = 50000000L / parameters[i];
if (iters[i] < 2)
iters[i] = 2;
flops[i] = 1 * parameters[i];
}
bench.setParameterVector(parameters);
bench.setIterations(iters);
bench.setOpsPerIteration(flops);
bench.beginBenchmarking();
VectorVersion(bench);
ArrayVersion(bench);
F77Version(bench);
#ifdef FORTRAN_90
F90Version(bench);
#endif
#ifdef BENCHMARK_VALARRAY
ValarrayVersion(bench);
#endif
bench.endBenchmarking();
bench.saveMatlabGraph("loop4.m");
return 0;
}
void initializeRandomDouble(double* data, int numElements, int stride = 1)
{
static Random<Uniform> rnd;
for (int i=0; i < numElements; ++i)
data[i*stride] = rnd.random();
}
template<class T>
void initializeArray(T& array, int numElements)
{
static Random<Uniform> rnd;
for (size_t i=0; i < numElements; ++i)
array[i] = rnd.random();
}
void VectorVersion(BenchmarkExt<int>& bench)
{
bench.beginImplementation("Vector<T>");
while (!bench.doneImplementationBenchmark())
{
int N = bench.getParameter();
cout << "Vector<T>: N = " << N << endl;
cout.flush();
long iters = bench.getIterations();
Vector<double> x(N);
initializeArray(x);
Vector<double> a(N);
initializeArray(a);
Vector<double> b(N);
initializeArray(b);
bench.start();
for (long i=0; i < iters; ++i)
{
x=a+b;
}
bench.stop();
}
bench.endImplementation();
}
void ArrayVersion(BenchmarkExt<int>& bench)
{
bench.beginImplementation("Array<T,1>");
while (!bench.doneImplementationBenchmark())
{
int N = bench.getParameter();
cout << "Array<T,1>: N = " << N << endl;
cout.flush();
long iters = bench.getIterations();
Array<double> x(N);
initializeArray(x);
Array<double> a(N);
initializeArray(a);
Array<double> b(N);
initializeArray(b);
bench.start();
for (long i=0; i < iters; ++i)
{
x=a+b;
}
bench.stop();
}
bench.endImplementation();
}
void F77Version(BenchmarkExt<int>& bench)
{
bench.beginImplementation("Fortran 77");
while (!bench.doneImplementationBenchmark())
{
int N = bench.getParameter();
cout << "Fortran 77: N = " << N << endl;
cout.flush();
int iters = bench.getIterations();
double* x = new double[N];
initializeRandomDouble(x, N);
double* a = new double[N];
initializeRandomDouble(a, N);
double* b = new double[N];
initializeRandomDouble(b, N);
bench.start();
loop4_f77(iters, N, x, a, b);
bench.stop();
delete [] x;
delete [] a;
delete [] b;
}
bench.endImplementation();
}
#ifdef FORTRAN_90
void F90Version(BenchmarkExt<int>& bench)
{
bench.beginImplementation("Fortran 90");
while (!bench.doneImplementationBenchmark())
{
int N = bench.getParameter();
cout << "Fortran 90: N = " << N << endl;
cout.flush();
int iters = bench.getIterations();
double* x = new double[N];
initializeRandomDouble(x, N);
double* a = new double[N];
initializeRandomDouble(a, N);
double* b = new double[N];
initializeRandomDouble(b, N);
bench.start();
loop4_f90(iters, N, x, a, b);
bench.stop();
delete [] x;
delete [] a;
delete [] b;
}
bench.endImplementation();
}
#endif
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