| 1 | // RUN: %libomp-compile |
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| 2 | // RUN: env OMP_SCHEDULE=nonmonotonic:dynamic,10 %libomp-run |
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| 3 | |
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| 4 | // The test checks iterations distribution for OMP 5.0 nonmonotonic OMP_SCHEDULE |
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| 5 | // case #threads > #chunks (fallback to monotonic dynamic) |
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| 6 | |
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| 7 | #include <stdio.h> |
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| 8 | #include <omp.h> |
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| 9 | |
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| 10 | #define ITERS 100 |
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| 11 | #define CHUNK 10 |
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| 12 | int err = 0; |
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| 13 | |
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| 14 | int main(int argc, char **argv) { |
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| 15 | int i, ch, it[ITERS]; |
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| 16 | omp_set_num_threads(16); // #threads is bigger than #chunks |
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| 17 | #pragma omp parallel for schedule(runtime) |
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| 18 | for (i = 0; i < ITERS; ++i) { |
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| 19 | it[i] = omp_get_thread_num(); |
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| 20 | } |
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| 21 | // check that each chunk executed by single thread |
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| 22 | for (ch = 0; ch < ITERS/CHUNK; ++ch) { |
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| 23 | int iter = ch * CHUNK; |
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| 24 | int nt = it[iter]; // thread number |
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| 25 | for (i = 1; i < CHUNK; ++i) { |
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| 26 | #if _DEBUG |
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| 27 | printf(format: "iter %d: (%d %d)\n" , iter + i, nt, it[iter + i]); |
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| 28 | #endif |
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| 29 | if (nt != it[iter + i]) { |
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| 30 | err++; |
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| 31 | } |
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| 32 | } |
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| 33 | } |
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| 34 | if (err > 0) { |
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| 35 | printf(format: "Failed, err = %d\n" , err); |
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| 36 | return 1; |
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| 37 | } |
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| 38 | printf(format: "Passed\n" ); |
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| 39 | return 0; |
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| 40 | } |
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| 41 | |
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