Last change
on this file since 77 was
26,
checked in by ymipsl, 12 years ago
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Implementation of parallelism
implementation of iterative laplacian for dissipation
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File size:
901 bytes
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Rev | Line | |
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[26] | 1 | MODULE mpipara |
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| 2 | |
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| 3 | INTEGER,SAVE :: mpi_rank |
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| 4 | INTEGER,SAVE :: mpi_size |
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| 5 | |
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| 6 | INTEGER,SAVE :: comm_icosa |
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| 7 | INTEGER,SAVE :: ierr |
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| 8 | LOGICAL,SAVE :: using_mpi |
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| 9 | LOGICAL,SAVE :: is_mpi_root |
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| 10 | |
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| 11 | CONTAINS |
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| 12 | |
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| 13 | SUBROUTINE init_mpipara |
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| 14 | USE mpi_mod |
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| 15 | IMPLICIT NONE |
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| 16 | |
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| 17 | using_mpi=.FALSE. |
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| 18 | #ifdef CPP_USING_MPI |
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| 19 | using_mpi=.TRUE. |
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| 20 | #endif |
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| 21 | |
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| 22 | IF (using_mpi) THEN |
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| 23 | CALL MPI_INIT(ierr) |
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| 24 | comm_icosa=MPI_COMM_WORLD |
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| 25 | CALL MPI_COMM_SIZE(comm_icosa,mpi_size,ierr) |
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| 26 | CALL MPI_COMM_RANK(comm_icosa,mpi_rank,ierr) |
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| 27 | ELSE |
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| 28 | comm_icosa=-1 |
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| 29 | mpi_size=1 |
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| 30 | mpi_rank=0 |
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| 31 | ENDIF |
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| 32 | |
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| 33 | IF (mpi_rank==0) THEN |
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| 34 | is_mpi_root=.TRUE. |
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| 35 | ELSE |
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| 36 | is_mpi_root=.FALSE. |
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| 37 | ENDIF |
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| 38 | |
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| 39 | END SUBROUTINE init_mpipara |
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| 40 | |
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| 41 | SUBROUTINE finalize_mpipara |
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| 42 | USE mpi_mod |
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| 43 | IMPLICIT NONE |
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| 44 | |
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| 45 | IF (using_mpi) CALL MPI_FINALIZE(ierr) |
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| 46 | |
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| 47 | END SUBROUTINE finalize_mpipara |
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| 48 | |
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| 49 | |
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| 50 | END MODULE mpipara |
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