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#define BZ_DISABLE_RESTRICT
#include <blitz/array.h>
#include <blitz/traversal.h>
#include <blitz/timer.h>
#ifdef BZ_HAVE_STD
#include <fstream>
#else
#include <fstream.h>
#endif
BZ_USING_NAMESPACE(blitz)
#if defined(BZ_FORTRAN_SYMBOLS_WITH_TRAILING_UNDERSCORES)
#define acoustic3d_f90 acoustic3d_f90_
#define acoustic3d_f77 acoustic3d_f77_
#define acoustic3d_f90tuned acoustic3d_f90tuned_
#define acoustic3d_f77tuned acoustic3d_f77tuned_
#elif defined(BZ_FORTRAN_SYMBOLS_WITH_DOUBLE_TRAILING_UNDERSCORES)
#define acoustic3d_f90 acoustic3d_f90__
#define acoustic3d_f77 acoustic3d_f77__
#define acoustic3d_f90tuned acoustic3d_f90tuned__
#define acoustic3d_f77tuned acoustic3d_f77tuned__
#elif defined(BZ_FORTRAN_SYMBOLS_CAPS)
#define acoustic3d_f90 ACOUSTIC3D_F90
#define acoustic3d_f77 ACOUSTIC3D_F77
#define acoustic3d_f90tuned ACOUSTIC3D_F90TUNED
#define acoustic3d_f77tuned ACOUSTIC3D_F77TUNED
#endif
extern "C" {
void acoustic3d_f90(int& N, int& niters, float& check);
void acoustic3d_f77(int& N, int& niters, float& check);
void acoustic3d_f90tuned(int& N, int& niters, float& check);
void acoustic3d_f77tuned(int& N, int& niters, float& check);
}
float acoustic3D_BlitzRaw(int N, int niters);
float acoustic3D_BlitzInterlacedCycled(int N, int niters);
float acoustic3D_BlitzCycled(int N, int niters);
float acoustic3D_BlitzStencil(int N, int niters);
void output_data(const char* type, const Timer& t, float check, double Gflops)
{
cout << type << ": " << t.elapsed()
<< t.indep_var() << " check = "
<< check << " Gflop/" << t.indep_var() << " = "
<< (Gflops/t.elapsed())
<< endl << endl;
}
int main()
{
Timer timer;
int N = 112;
int niters = 210; // Must be divisible by 3 for tuned Fortran versions
float check;
cout << "Acoustic 3D Benchmark" << endl << endl;
double Gflops = (N-2)*(N-2)*(N-2) * 11.0 * niters / 1.0e+9;
generateFastTraversalOrder(TinyVector<int,2>(N-2,N-2));
timer.start();
check = acoustic3D_BlitzRaw(N, niters);
timer.stop();
output_data("Blitz++ (raw)", timer, check, Gflops);
timer.start();
check = acoustic3D_BlitzStencil(N, niters);
timer.stop();
output_data("Blitz++ (stencil)", timer, check, Gflops);
#if 0
timer.start();
check = acoustic3D_BlitzInterlaced(N, niters, c);
timer.stop();
output_data("Blitz++ (interlaced)", timer, check, Gflops);
#endif
timer.start();
check = acoustic3D_BlitzCycled(N, niters);
timer.stop();
output_data("Blitz++ (cycled)", timer, check, Gflops);
timer.start();
check = acoustic3D_BlitzInterlacedCycled(N, niters);
timer.stop();
output_data("Blitz++ (interlaced & cycled)", timer, check, Gflops);
#ifdef FORTRAN_90
timer.start();
acoustic3d_f90(N, niters, check);
timer.stop();
output_data("Fortran 90", timer, check, Gflops);
timer.start();
acoustic3d_f90tuned(N, niters, check);
timer.stop();
output_data("Fortran 90 (tuned)", timer, check, Gflops);
#endif
timer.start();
acoustic3d_f77(N, niters, check);
timer.stop();
output_data("Fortran 77", timer, check, Gflops);
timer.start();
acoustic3d_f77tuned(N, niters, check);
timer.stop();
output_data("Fortran 77 (tuned)", timer, check, Gflops);
return 0;
}
void setupInitialConditions(Array<float,3>& P1, Array<float,3>& P2,
Array<float,3>& P3, Array<float,3>& c, int N);
void snapshot(const Array<float,3>& P, const Array<float,3>& c);
void checkArray(const Array<float,3>& A, int N);
void setupInitialConditions(Array<float,3>& P1, Array<float,3>& P2,
Array<float,3>& P3, Array<float,3>& c, int N)
{
// Set the velocity field
c(Range(0,N/2-1), Range::all(), Range::all()) = 0.05;
c(Range(N/2,N-1), Range::all(), Range::all()) = 0.3;
double Nfp = static_cast<double>(N);
int cavityLeft = static_cast<int>(3*Nfp/7-1);
int cavityRight = static_cast<int>(4*Nfp/7-1);
int cavityFront = static_cast<int>(3*Nfp/7-1);
int cavityBack = static_cast<int>(4*Nfp/7-1);
int cavityTop = static_cast<int>(5*Nfp/7-1);
int cavityBottom = static_cast<int>(6*Nfp/7-1);
c(Range(cavityTop,cavityBottom),Range(cavityLeft,cavityRight),
Range(cavityFront,cavityBack)) = 0.02;
int cavityTop2 = static_cast<int>(1*Nfp/7-1);
int cavityBottom2 = static_cast<int>(2*Nfp/7-1);
c(Range(cavityTop2,cavityBottom2),Range(cavityLeft,cavityRight),
Range(cavityFront,cavityBack)) = 0.001;
// Initial pressure distribution
BZ_USING_NAMESPACE(blitz::tensor);
float NN = N;
float ci = N/2-1;
float cj = N/2-1;
float ck = N/2-1;
// pow2 is an ET-only function, it's not defined for POD types
float s2 = 64.0 * 9.0 / pow(NN/2.0, 2);
P1 = 0.0;
P2 = exp(-(pow2(i-ci)+pow2(j-cj)+pow2(k-ck)) * s2);
P3 = 0.0;
checkArray(P2, N);
checkArray(c, N);
}
void checkArray(const Array<float,3>& A, int N)
{
double check = 0.0;
for (int i=0; i < N; ++i)
for (int j=0; j < N; ++j)
for (int k=0; k < N; ++k)
check += A(i,j,k) * ((i+1)+N*(j+1)+N*N*(k+1));
cout << "Array check: " << check << endl;
}
void snapshot(const Array<float,3>& P, const Array<float,3>& c)
{
static int count = 0, snapshotNum = 0;
if (++count < 5)
return;
count = 0;
++snapshotNum;
char filename[128];
sprintf(filename, "snapshot%03d.m", snapshotNum);
ofstream ofs(filename);
int N = P.length(firstDim);
int k = N/2;
float Pmin = -0.2;
float PScale = 1.0/0.4;
float VScale = 0.5;
ofs << "P" << snapshotNum << " = [ ";
for (int i=0; i < N; ++i)
{
for (int j=0; j < N; ++j)
{
float value = (P(i,j,k)-Pmin)*PScale + c(i,j,k)*VScale;
int r = static_cast<int>(value * 4096);
ofs << r << " ";
}
if (i < N-1)
ofs << ";" << endl;
}
ofs << "];" << endl;
}
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