A Practical Approach to High-Performance Computing by Sergei Kurgalin & Sergei Borzunov

Author:Sergei Kurgalin & Sergei Borzunov
Language: eng
Format: epub
ISBN: 9783030275587
Publisher: Springer International Publishing

(c) // filling the array res[] in the order in which

// iterations follow in a sequential loop

#pragma omp parallel ordered

for(int i=0;i<ceil(log2(N));i++)

res[i]=func(1.0/(i+1));

(d) // writing the values of func() into a file,

// the order of the lines does not matter

#pragma omp parallel private(k,y)

{

k = omp_get_thread_num();

y = func(k);

fprintf(fp, "%d\t %lf\n", k, y);

}

5.3.Suppose that the size m of the blocks for parallelizing a loop of N iterations in a static way is given. What is the number k of the thread that will implement the i-th loop iteration if the number of threads in the team is equal to p?

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