GCC Code Coverage Report

Directory: ./
File: tasks/tabalaev_a_elem_mat_min/mpi/src/ops_mpi.cpp
Date: 2026-01-27 01:59:34
Exec Total Coverage
Lines: 45 45 100.0%
Functions: 5 5 100.0%
Branches: 26 44 59.1%
Line Branch Exec Source
1 #include "tabalaev_a_elem_mat_min/mpi/include/ops_mpi.hpp"
2
3 #include <mpi.h>
4
5 #include <algorithm>
6 #include <climits>
7 #include <cstddef>
8 #include <utility>
9 #include <vector>
10
11 #include "tabalaev_a_elem_mat_min/common/include/common.hpp"
12
13 namespace tabalaev_a_elem_mat_min {
14
15
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 12 TabalaevAElemMatMinMPI::TabalaevAElemMatMinMPI(const InType &in) {
16 SetTypeOfTask(GetStaticTypeOfTask());
17 GetInput() = in;
18 12 GetOutput() = 0;
19 12 }
20
21 12 bool TabalaevAElemMatMinMPI::ValidationImpl() {
22 12 int world_rank = 0;
23 12 MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);
24
25 12 int validation = 0;
26
27
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 12 if (world_rank == 0) {
28 auto &rows = std::get<0>(GetInput());
29 auto &columns = std::get<1>(GetInput());
30 auto &matrix = std::get<2>(GetInput());
31
32
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 6 if ((rows != 0 && columns != 0) && (!matrix.empty()) && (matrix.size() == rows * columns)) {
33 6 validation = 1;
34 }
35 }
36
37 12 MPI_Bcast(&validation, 1, MPI_INT, 0, MPI_COMM_WORLD);
38
39 12 return validation != 0;
40 }
41
42 12 bool TabalaevAElemMatMinMPI::PreProcessingImpl() {
43 12 GetOutput() = 0;
44 12 return true;
45 }
46
47 12 bool TabalaevAElemMatMinMPI::RunImpl() {
48 12 int world_size = 1;
49 12 MPI_Comm_size(MPI_COMM_WORLD, &world_size);
50 12 int world_rank = 0;
51 12 MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);
52
53 12 std::vector<int> matrix;
54
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 12 std::vector<int> sendcounts(world_size);
55
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 12 std::vector<int> displs(world_size);
56 12 std::vector<int> local_matrix;
57
58
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 12 if (world_rank == 0) {
59 auto &input = GetInput();
60
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 6 matrix = std::get<2>(input);
61
62 size_t matrix_size = matrix.size();
63 6 size_t part_size = matrix_size / world_size;
64 6 size_t remainder = matrix_size % world_size;
65
66 int offset = 0;
67
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 18 for (size_t i = 0; std::cmp_less(i, world_size); ++i) {
68
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 21 sendcounts[i] = static_cast<int>(part_size) + (i < remainder ? 1 : 0);
69 12 displs[i] = offset;
70 12 offset += sendcounts[i];
71 }
72 }
73
74
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 12 MPI_Bcast(sendcounts.data(), world_size, MPI_INT, 0, MPI_COMM_WORLD);
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 12 int local_size = sendcounts[world_rank];
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 12 local_matrix.resize(local_size);
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78
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 18 MPI_Scatterv(world_rank == 0 ? matrix.data() : nullptr, sendcounts.data(), displs.data(), MPI_INT,
79 local_matrix.data(), local_size, MPI_INT, 0, MPI_COMM_WORLD);
80
81 12 int local_minik = INT_MAX;
82
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 263 for (int elem : local_matrix) {
83 251 local_minik = std::min(local_minik, elem);
84 }
85
86 12 int global_minik = 0;
87
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 12 MPI_Allreduce(&local_minik, &global_minik, 1, MPI_INT, MPI_MIN, MPI_COMM_WORLD);
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 12 GetOutput() = global_minik;
90
91 12 return true;
92 }
93
94 12 bool TabalaevAElemMatMinMPI::PostProcessingImpl() {
95 12 return true;
96 }
97
98 } // namespace tabalaev_a_elem_mat_min
99