root / synthbench / euroben-dm / mod1k / csetup.f @ 0:839f52ef7657
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Subroutine csetup |
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c ---------------------------------------------------------------------- |
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c --- 'csetup' initializes the communication for MPI programs. |
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c |
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c --- Output parameters (in Common /dist/): |
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c Integer: me --- Local node number (0 <= me <= nodes-1). |
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c Integer: nodes --- Number of nodes as found in the MPI system. |
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c ---------------------------------------------------------------------- |
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Use dist_module |
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Include 'mpif.h' |
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|
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Integer info |
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c ---------------------------------------------------------------------- |
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c --- Initialize MPI also, initialize this processor and the set of |
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c processors for this job. (In case of problems, report and stop). |
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c ---------------------------------------------------------------------- |
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Call Mpi_Init( info ) |
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If ( info .NE. Mpi_Success ) Then |
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Print *, 'Could not initialize MPI, ierr = ', info |
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Stop 'Csetup stage 1' |
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End If |
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Call Mpi_Comm_Rank( Mpi_Comm_World, me, info ) |
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If ( info .NE. Mpi_Success ) Then |
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Print *, 'Could not find my process id, ierr = ', info |
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Stop 'Csetup stage 2' |
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End If |
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Call Mpi_Comm_Size( Mpi_Comm_World, nodes, info ) |
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If ( info .NE. Mpi_Success ) Then |
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Print *, 'Could not determine no. of nodes, ierr = ', info |
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Stop 'Csetup stage 3' |
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End If |
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c ---------------------------------------------------------------------- |
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c --- Be sure that all processors start together. |
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Call Mpi_Barrier( Mpi_Comm_World, info ) |
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c ---------------------------------------------------------------------- |
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End |