Last change
on this file since 170 was
151,
checked in by ymipsl, 11 years ago
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Implementation of mixte parallelism MPI/OpenMP into src directory
YM
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File size:
1.8 KB
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1 | MODULE omp_para |
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2 | |
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3 | INTEGER,SAVE :: omp_size |
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4 | INTEGER,SAVE :: omp_rank |
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5 | !$OMP THREADPRIVATE(omp_rank) |
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6 | |
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7 | LOGICAL,SAVE :: omp_first |
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8 | LOGICAL,SAVE :: omp_last |
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9 | LOGICAL,SAVE :: omp_master |
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10 | !$OMP THREADPRIVATE(omp_first, omp_last,omp_master) |
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11 | |
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12 | INTEGER,SAVE :: ll_begin |
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13 | INTEGER,SAVE :: ll_beginp1 |
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14 | INTEGER,SAVE :: ll_end |
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15 | INTEGER,SAVE :: ll_endm1 |
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16 | INTEGER,SAVE :: ll_endp1 |
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17 | !$OMP THREADPRIVATE(ll_begin,ll_beginp1,ll_end,ll_endm1,ll_endp1) |
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18 | LOGICAL,SAVE :: using_openmp |
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19 | |
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20 | CONTAINS |
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21 | |
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22 | |
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23 | SUBROUTINE init_omp_para |
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24 | USE grid_param |
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25 | #ifdef CPP_USING_OPENMP |
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26 | USE omp_lib |
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27 | #endif |
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28 | IMPLICIT NONE |
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29 | INTEGER :: ll_nb,i |
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30 | |
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31 | #ifdef CPP_USING_OPENMP |
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32 | using_openmp=.TRUE. |
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33 | #else |
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34 | using_openmp=.FALSE. |
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35 | #endif |
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36 | |
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37 | IF (using_openmp) THEN |
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38 | !$OMP PARALLEL PRIVATE(ll_nb,i) |
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39 | |
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40 | !$OMP MASTER |
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41 | #ifdef CPP_USING_OPENMP |
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42 | omp_size=OMP_GET_NUM_THREADS() |
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43 | #endif |
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44 | !$OMP END MASTER |
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45 | !$OMP BARRIER |
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46 | #ifdef CPP_USING_OPENMP |
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47 | omp_rank=OMP_GET_THREAD_NUM() |
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48 | #endif |
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49 | omp_first=.FALSE. |
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50 | omp_last=.FALSE. |
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51 | omp_master=.FALSE. |
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52 | |
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53 | IF (omp_rank==0) THEN |
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54 | omp_first=.TRUE. |
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55 | omp_master=.TRUE. |
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56 | ENDIF |
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57 | |
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58 | IF (omp_rank==omp_size-1) omp_last=.TRUE. |
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59 | |
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60 | ll_end=0 |
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61 | DO i=0,omp_rank |
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62 | ll_begin=ll_end+1 |
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63 | ll_nb=llm/omp_size |
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64 | IF (MOD(llm,omp_size)>i) ll_nb=ll_nb+1 |
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65 | ll_end=ll_begin+ll_nb-1 |
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66 | ENDDO |
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67 | |
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68 | ll_beginp1=ll_begin |
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69 | ll_endp1=ll_end |
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70 | ll_endm1=ll_end |
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71 | |
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72 | IF (omp_first) ll_beginp1=ll_begin+1 |
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73 | IF (omp_last) ll_endp1=ll_endp1+1 |
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74 | IF (omp_last) ll_endm1=ll_endm1-1 |
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75 | |
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76 | !$OMP END PARALLEL |
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77 | |
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78 | ELSE |
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79 | omp_size=1 |
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80 | omp_rank=0 |
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81 | omp_first=.TRUE. |
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82 | omp_last=.TRUE. |
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83 | omp_master=.TRUE. |
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84 | ll_begin=1 |
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85 | ll_beginp1=2 |
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86 | ll_end=llm |
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87 | ll_endm1=llm-1 |
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88 | ll_endp1=llm+1 |
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89 | ENDIF |
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90 | |
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91 | END SUBROUTINE init_omp_para |
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92 | |
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93 | |
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94 | END MODULE omp_para |
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95 | |
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96 | |
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97 | |
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98 | |
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99 | |
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100 | |
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