OpenMP provides a straightforward method to offload computation to target devices such as GPUs. This is accomplished using specific directives that help in parallelizing your code while leveraging the capabilities of the target hardware. Below is an example of how to use OpenMP target directives for offloading:
#include
#include
void vector_add(int *a, int *b, int *c, int n) {
#pragma omp target teams distribute parallel for map(to:a[0:n], b[0:n]) map(from:c[0:n])
for (int i = 0; i < n; i++) {
c[i] = a[i] + b[i];
}
}
int main() {
int n = 1000;
int a[n], b[n], c[n];
// Initialize vectors
for (int i = 0; i < n; i++) {
a[i] = i;
b[i] = i;
}
vector_add(a, b, c, n);
// Print the results
for (int i = 0; i < n; i++) {
printf("%d ", c[i]);
}
return 0;
}
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