head-3d application

codes/heat-3d/heat-3d.c

+/**
+ * This version is stamped on May 10, 2016
+ *
+ * Contact:
+ *   Louis-Noel Pouchet <pouchet.ohio-state.edu>
+ *   Tomofumi Yuki <tomofumi.yuki.fr>
+ *
+ * Web address: http://polybench.sourceforge.net
+ */
+/* heat-3d.c: this file is part of PolyBench/C */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <math.h>
+
+/* Include polybench common header. */
+#include <polybench.h>
+
+/* Include benchmark-specific header. */
+#include "heat-3d.h"
+
+
+/* Array initialization. */
+static
+void init_array (int n,
+		 DATA_TYPE POLYBENCH_3D(A,N,N,N,n,n,n),
+		 DATA_TYPE POLYBENCH_3D(B,N,N,N,n,n,n))
+{
+  int i, j, k;
+
+  for (i = 0; i < n; i++)
+    for (j = 0; j < n; j++)
+      for (k = 0; k < n; k++)
+        A[i][j][k] = B[i][j][k] = (DATA_TYPE) (i + j + (n-k))* 10 / (n);
+}
+
+
+/* DCE code. Must scan the entire live-out data.
+   Can be used also to check the correctness of the output. */
+static
+void print_array(int n,
+		 DATA_TYPE POLYBENCH_3D(A,N,N,N,n,n,n))
+
+{
+  int i, j, k;
+
+  POLYBENCH_DUMP_START;
+  POLYBENCH_DUMP_BEGIN("A");
+  for (i = 0; i < n; i++)
+    for (j = 0; j < n; j++)
+      for (k = 0; k < n; k++) {
+         if ((i * n * n + j * n + k) % 20 == 0) fprintf(POLYBENCH_DUMP_TARGET, "\n");
+         fprintf(POLYBENCH_DUMP_TARGET, DATA_PRINTF_MODIFIER, A[i][j][k]);
+      }
+  POLYBENCH_DUMP_END("A");
+  POLYBENCH_DUMP_FINISH;
+}
+
+/* Main computational kernel. The whole function will be timed,
+   including the call and return. */
+static
+void kernel_heat_3d(int tsteps,
+		      int n,
+		      DATA_TYPE POLYBENCH_3D(A,N,N,N,n,n,n),
+		      DATA_TYPE POLYBENCH_3D(B,N,N,N,n,n,n))
+{
+  int t, i, j, k;
+
+#pragma scop
+    for (t = 1; t <= TSTEPS; t++) {
+        for (i = 1; i < _PB_N-1; i++) {
+            for (j = 1; j < _PB_N-1; j++) {
+                for (k = 1; k < _PB_N-1; k++) {
+                    B[i][j][k] =   SCALAR_VAL(0.125) * (A[i+1][j][k] - SCALAR_VAL(2.0) * A[i][j][k] + A[i-1][j][k])
+                                 + SCALAR_VAL(0.125) * (A[i][j+1][k] - SCALAR_VAL(2.0) * A[i][j][k] + A[i][j-1][k])
+                                 + SCALAR_VAL(0.125) * (A[i][j][k+1] - SCALAR_VAL(2.0) * A[i][j][k] + A[i][j][k-1])
+                                 + A[i][j][k];
+                }
+            }
+        }
+        for (i = 1; i < _PB_N-1; i++) {
+           for (j = 1; j < _PB_N-1; j++) {
+               for (k = 1; k < _PB_N-1; k++) {
+                   A[i][j][k] =   SCALAR_VAL(0.125) * (B[i+1][j][k] - SCALAR_VAL(2.0) * B[i][j][k] + B[i-1][j][k])
+                                + SCALAR_VAL(0.125) * (B[i][j+1][k] - SCALAR_VAL(2.0) * B[i][j][k] + B[i][j-1][k])
+                                + SCALAR_VAL(0.125) * (B[i][j][k+1] - SCALAR_VAL(2.0) * B[i][j][k] + B[i][j][k-1])
+                                + B[i][j][k];
+               }
+           }
+       }
+    }
+#pragma endscop
+
+}
+
+
+int main(int argc, char** argv)
+{
+  /* Retrieve problem size. */
+  int n = N;
+  int tsteps = TSTEPS;
+
+  /* Variable declaration/allocation. */
+  POLYBENCH_3D_ARRAY_DECL(A, DATA_TYPE, N, N, N, n, n, n);
+  POLYBENCH_3D_ARRAY_DECL(B, DATA_TYPE, N, N, N, n, n, n);
+
+
+  /* Initialize array(s). */
+  init_array (n, POLYBENCH_ARRAY(A), POLYBENCH_ARRAY(B));
+
+  /* Start timer. */
+  polybench_start_instruments;
+
+  /* Run kernel. */
+  kernel_heat_3d (tsteps, n, POLYBENCH_ARRAY(A), POLYBENCH_ARRAY(B));
+
+  /* Stop and print timer. */
+  polybench_stop_instruments;
+  polybench_print_instruments;
+
+  /* Prevent dead-code elimination. All live-out data must be printed
+     by the function call in argument. */
+  polybench_prevent_dce(print_array(n, POLYBENCH_ARRAY(A)));
+
+  /* Be clean. */
+  POLYBENCH_FREE_ARRAY(A);
+
+  return 0;
+}

codes/heat-3d/heat-3d.h

+/**
+ * This version is stamped on May 10, 2016
+ *
+ * Contact:
+ *   Louis-Noel Pouchet <pouchet.ohio-state.edu>
+ *   Tomofumi Yuki <tomofumi.yuki.fr>
+ *
+ * Web address: http://polybench.sourceforge.net
+ */
+#ifndef _HEAT_3D_H
+# define _HEAT_3D_H
+
+/* Default to LARGE_DATASET. */
+# if !defined(MINI_DATASET) && !defined(SMALL_DATASET) && !defined(MEDIUM_DATASET) && !defined(LARGE_DATASET) && !defined(EXTRALARGE_DATASET)
+#  define LARGE_DATASET
+# endif
+
+# if !defined(TSTEPS) && !defined(N)
+/* Define sample dataset sizes. */
+#  ifdef MINI_DATASET
+#   define TSTEPS 20
+#   define N 10
+#  endif
+
+#  ifdef SMALL_DATASET
+#   define TSTEPS 40
+#   define N 20
+#  endif
+
+#  ifdef MEDIUM_DATASET
+#   define TSTEPS 100
+#   define N 40
+#  endif
+
+#  ifdef LARGE_DATASET
+#   define TSTEPS 500
+#   define N 120
+#  endif
+
+#  ifdef EXTRALARGE_DATASET
+#   define TSTEPS 1000
+#   define N 200
+#  endif
+
+
+#endif /* !(TSTEPS N) */
+
+# define _PB_TSTEPS POLYBENCH_LOOP_BOUND(TSTEPS,tsteps)
+# define _PB_N POLYBENCH_LOOP_BOUND(N,n)
+
+
+/* Default data type */
+# if !defined(DATA_TYPE_IS_INT) && !defined(DATA_TYPE_IS_FLOAT) && !defined(DATA_TYPE_IS_DOUBLE)
+#  define DATA_TYPE_IS_DOUBLE
+# endif
+
+#ifdef DATA_TYPE_IS_INT
+#  define DATA_TYPE int
+#  define DATA_PRINTF_MODIFIER "%d "
+#endif
+
+#ifdef DATA_TYPE_IS_FLOAT
+#  define DATA_TYPE float
+#  define DATA_PRINTF_MODIFIER "%0.2f "
+#  define SCALAR_VAL(x) x##f
+#  define SQRT_FUN(x) sqrtf(x)
+#  define EXP_FUN(x) expf(x)
+#  define POW_FUN(x,y) powf(x,y)
+# endif
+
+#ifdef DATA_TYPE_IS_DOUBLE
+#  define DATA_TYPE double
+#  define DATA_PRINTF_MODIFIER "%0.2lf "
+#  define SCALAR_VAL(x) x
+#  define SQRT_FUN(x) sqrt(x)
+#  define EXP_FUN(x) exp(x)
+#  define POW_FUN(x,y) pow(x,y)
+# endif
+
+#endif /* !_HEAT_3D_H */