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#include <assert.h>
/* Test of reduction on loop directive (gangs, workers and vectors, non-private
reduction variable: separate gang and worker/vector loops). */
int
main (int argc, char *argv[])
{
int i, j, arr[32768], res = 0, hres = 0;
for (i = 0; i < 32768; i++)
arr[i] = i;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
copy(res)
{
#pragma acc loop gang reduction(+:res)
for (j = 0; j < 32; j++)
{
#pragma acc loop worker vector reduction(+:res)
for (i = 0; i < 1024; i++)
res += arr[j * 1024 + i];
}
/* "res" is non-private, and is not available until after the parallel
region. */
}
for (i = 0; i < 32768; i++)
hres += arr[i];
assert (res == hres);
return 0;
}
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