67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
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#include "aux.h"
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#include "omp.h"
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int main(int argc, char **argv)
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{
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long t_start;
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double time;
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int i, j, n;
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Stack stacks[ntypes];
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Request req;
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int head;
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init(stacks);
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t_start = usecs();
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#pragma omp parallel shared(stacks)
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{
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#pragma omp single
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{
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for (;;)
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{
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req = receive();
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// printf("Received request %d\n",req.id);
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if (req.type != -1)
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{
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#pragma omp task firstprivate(req)
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{
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// printf("Thread %d, processing request %d\n", omp_get_thread_num(), req.id);
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Result result = process(&req);
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// on fait un atomic update car l'on a que un seul stacks pour tous les threads (normalement ?)
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#pragma omp atomic update
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stacks[req.type].head += 1;
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stacks[req.type].results[stacks[req.type].head] = result;
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}
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}
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else
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{
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break;
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}
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}
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}
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}
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time = (double)(usecs() - t_start) / 1000000.0;
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printf("Finished. Execution time:%.2f \n", time);
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check(stacks);
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return 0;
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}
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/*
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Résultats:
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nb_threads = 1 : Execution time: 1.19
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nb_threads = 2 : Execution time: 0.63
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nb_threads = 4 : Execution time: 0.34
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nb_threads = 6 : Execution time: 0.22
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nb_threads = 8 : Execution time: 0.17
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nb_threads = 10 : Execution time: 0.15
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*/
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