| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include "yurkin_g_ruler/mpi/include/ops_mpi.hpp" | ||
| 2 | |||
| 3 | #include <mpi.h> | ||
| 4 | |||
| 5 | #include <algorithm> | ||
| 6 | |||
| 7 | #include "yurkin_g_ruler/common/include/common.hpp" | ||
| 8 | |||
| 9 | namespace yurkin_g_ruler { | ||
| 10 | |||
| 11 | 6 | YurkinGRulerMPI::YurkinGRulerMPI(const InType &in) { | |
| 12 | SetTypeOfTask(YurkinGRulerMPI::GetStaticTypeOfTask()); | ||
| 13 | 6 | GetInput() = in; | |
| 14 | GetOutput() = 0; | ||
| 15 | 6 | } | |
| 16 | |||
| 17 | 6 | bool YurkinGRulerMPI::ValidationImpl() { | |
| 18 |
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6 | return (GetInput() >= 0) && (GetOutput() == 0); |
| 19 | } | ||
| 20 | |||
| 21 | 6 | bool YurkinGRulerMPI::PreProcessingImpl() { | |
| 22 | 6 | GetOutput() = 0; | |
| 23 | 6 | return true; | |
| 24 | } | ||
| 25 | |||
| 26 | 6 | bool YurkinGRulerMPI::RunImpl() { | |
| 27 | 6 | int rank = 0; | |
| 28 | 6 | int size = 0; | |
| 29 | 6 | MPI_Comm_rank(MPI_COMM_WORLD, &rank); | |
| 30 | 6 | MPI_Comm_size(MPI_COMM_WORLD, &size); | |
| 31 | |||
| 32 |
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6 | if (size <= 0) { |
| 33 | return false; | ||
| 34 | } | ||
| 35 | |||
| 36 | 6 | int src = 0; | |
| 37 | 6 | int dst = size - 1; | |
| 38 | |||
| 39 | src = std::clamp(src, 0, size - 1); | ||
| 40 | 6 | dst = std::clamp(dst, 0, size - 1); | |
| 41 | |||
| 42 | 6 | GetOutput() = GetInput(); | |
| 43 | 6 | int payload = GetInput(); | |
| 44 | |||
| 45 |
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6 | if (src == dst) { |
| 46 | ✗ | MPI_Barrier(MPI_COMM_WORLD); | |
| 47 | ✗ | return true; | |
| 48 | } | ||
| 49 | |||
| 50 | const int low = std::min(src, dst); | ||
| 51 | const int high = std::max(src, dst); | ||
| 52 | const int direction = (dst > src) ? +1 : -1; | ||
| 53 | |||
| 54 |
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6 | if (rank < low || rank > high) { |
| 55 | ✗ | MPI_Barrier(MPI_COMM_WORLD); | |
| 56 | ✗ | return true; | |
| 57 | } | ||
| 58 | |||
| 59 |
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6 | if (rank == src) { |
| 60 | const int next = rank + direction; | ||
| 61 | 3 | MPI_Send(&payload, 1, MPI_INT, next, 0, MPI_COMM_WORLD); | |
| 62 | 3 | MPI_Barrier(MPI_COMM_WORLD); | |
| 63 | 3 | return true; | |
| 64 | } | ||
| 65 | |||
| 66 | 3 | const int prev = rank - direction; | |
| 67 | 3 | int recv_val = 0; | |
| 68 | 3 | MPI_Recv(&recv_val, 1, MPI_INT, prev, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE); | |
| 69 | |||
| 70 |
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3 | if (rank == dst) { |
| 71 | 3 | GetOutput() = recv_val; | |
| 72 | 3 | MPI_Barrier(MPI_COMM_WORLD); | |
| 73 | 3 | return true; | |
| 74 | } | ||
| 75 | |||
| 76 | ✗ | const int next = rank + direction; | |
| 77 | ✗ | MPI_Send(&recv_val, 1, MPI_INT, next, 0, MPI_COMM_WORLD); | |
| 78 | |||
| 79 | ✗ | MPI_Barrier(MPI_COMM_WORLD); | |
| 80 | return true; | ||
| 81 | } | ||
| 82 | |||
| 83 | 6 | bool YurkinGRulerMPI::PostProcessingImpl() { | |
| 84 | 6 | return GetOutput() >= 0; | |
| 85 | } | ||
| 86 | |||
| 87 | } // namespace yurkin_g_ruler | ||
| 88 |