Local_result[0] = max_iterations; local_result[1] = number_max_iterations; int global_result[2]; MPI_Reduce(&local_result, &global_result, 1, MPI_2INT, MPI_MAXLOC,

Question

Local_result[0] = max_iterations; local_result[1] = number_max_iterations; int global_result[2]; MPI_Reduce(&local_result, &global_result, 1, MPI_2INT, MPI_MAXLOC,

ROOT, MPI_COMM_WORLD);

printf("number requiring max number of iterations: %d. (number of iterations: %d)\n",
global_result[0], global_result[1]);

Почему в итоге в строке [0] number requiring max number of iterations: 3. (number of iterations: 71) наисано 3,71
а не 6,1 ?

[0] number requiring max number of iterations: 3. (number of iterations: 71)
[1] LOCAL - max_iterations = 6 , number = 1
[1] LOCAL - max_iterations = 4 , number = 31
[1] LOCAL - max_iterations = 3 , number = 61
[1] LOCAL - max_iterations = 3 , number = 91
[2] LOCAL - max_iterations = 5 , number = 11
[2] LOCAL - max_iterations = 4 , number = 41
[2] LOCAL - max_iterations = 3 , number = 71
[3] LOCAL - max_iterations = 4 , number = 21
[3] LOCAL - max_iterations = 4 , number = 51
[3] LOCAL - max_iterations = 3 , number = 81

#c #programming #russian

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05.08.2023

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Artur Kopytin · Answer 1

Artur Kopytin Автор вопроса

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05.08.2023

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Local_result[0] = max_iterations; local_result[1] = number_max_iterations; int global_result[2]; MPI_Reduce(&local_result, &global_result, 1, MPI_2INT, MPI_MAXLOC,

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