7459e10f34
The PR refactors the non-contiguous update tests as raised as a TODO in one of the comments in the related PR. Prefixed all with `strided_update`. For offload tests, added a dedicated sub-directory.
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
// RUN: %libomptarget-compile-run-and-check-generic
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// This test checks that "update from" clause in OpenMP supports strided
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// sections. #pragma omp target update from(result[0:N/2:2]) updates every other
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// element from device
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#include <omp.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define N 32
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int main() {
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double *result = (double *)calloc(N, sizeof(double));
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printf("initial host array values:\n");
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for (int i = 0; i < N; i++)
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printf("%f\n", result[i]);
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printf("\n");
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#pragma omp target data map(to : result[0 : N])
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{
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#pragma omp target map(alloc : result[0 : N])
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for (int i = 0; i < N; i++)
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result[i] += i;
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// Update strided elements from device: even indices 0,2,4,...,30
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#pragma omp target update from(result[0 : 16 : 2])
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}
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printf("after target update from (even indices up to 30 updated):\n");
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for (int i = 0; i < N; i++)
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printf("%f\n", result[i]);
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printf("\n");
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// Expected: even indices i, odd indices 0
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// CHECK: after target update from
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// CHECK: 0.000000
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// CHECK: 0.000000
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// CHECK: 2.000000
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// CHECK: 0.000000
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// CHECK: 4.000000
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// CHECK: 0.000000
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// CHECK: 6.000000
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// CHECK: 0.000000
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// CHECK: 8.000000
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// CHECK: 0.000000
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// CHECK: 10.000000
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// CHECK: 0.000000
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// CHECK: 12.000000
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// CHECK: 0.000000
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// CHECK: 14.000000
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// CHECK: 0.000000
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// CHECK: 16.000000
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// CHECK: 0.000000
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// CHECK: 18.000000
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// CHECK: 0.000000
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// CHECK: 20.000000
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// CHECK: 0.000000
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// CHECK: 22.000000
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// CHECK: 0.000000
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// CHECK: 24.000000
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// CHECK: 0.000000
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// CHECK: 26.000000
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// CHECK: 0.000000
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// CHECK: 28.000000
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// CHECK: 0.000000
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// CHECK: 30.000000
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// CHECK: 0.000000
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// CHECK-NOT: 1.000000
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// CHECK-NOT: 3.000000
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// CHECK-NOT: 31.000000
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free(result);
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return 0;
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}
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