diff options
Diffstat (limited to 'libgomp/testsuite/libgomp.c/examples-4/target_data-3.c')
-rw-r--r-- | libgomp/testsuite/libgomp.c/examples-4/target_data-3.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libgomp/testsuite/libgomp.c/examples-4/target_data-3.c b/libgomp/testsuite/libgomp.c/examples-4/target_data-3.c new file mode 100644 index 00000000000..abb283801f8 --- /dev/null +++ b/libgomp/testsuite/libgomp.c/examples-4/target_data-3.c @@ -0,0 +1,79 @@ +/* { dg-do run } */ + +#include <stdlib.h> + +const int ROWS = 5; +const int COLS = 5; + +void init (int Q[][COLS], const int rows, const int cols) +{ + int i, j; + for (i = 0; i < rows; i++) + for (j = 0; j < cols; j++) + Q[i][j] = (i + 1) * 100 + (j + 1); +} + +void check (int a[][COLS], int b[][COLS], const int rows, const int cols) +{ + int i, j; + for (i = 0; i < rows; i++) + for (j = 0; j < cols; j++) + if (a[i][j] != b[i][j]) + abort (); +} + +void gramSchmidt_ref (int Q[][COLS], const int rows, const int cols) +{ + int i, k; + + for (k = 0; k < cols; k++) + { + int tmp = 0; + + for (i = 0; i < rows; i++) + tmp += (Q[i][k] * Q[i][k]); + + for (i = 0; i < rows; i++) + Q[i][k] *= tmp; + } +} + +void gramSchmidt (int Q[][COLS], const int rows, const int cols) +{ + int i, k; + + #pragma omp target data map(Q[0:rows][0:cols]) map(to:COLS) + for (k = 0; k < cols; k++) + { + int tmp = 0; + + #pragma omp target + #pragma omp parallel for reduction(+:tmp) + for (i = 0; i < rows; i++) + tmp += (Q[i][k] * Q[i][k]); + + #pragma omp target + #pragma omp parallel for + for (i = 0; i < rows; i++) + Q[i][k] *= tmp; + } +} + +int main () +{ + int (*Q1)[COLS] = (int(*)[COLS]) malloc (ROWS * COLS * sizeof (int)); + int (*Q2)[COLS] = (int(*)[COLS]) malloc (ROWS * COLS * sizeof (int)); + + init (Q1, ROWS, COLS); + init (Q2, ROWS, COLS); + + gramSchmidt_ref (Q1, ROWS, COLS); + gramSchmidt (Q2, ROWS, COLS); + + check (Q1, Q2, ROWS, COLS); + + free (Q1); + free (Q2); + + return 0; +} |