mirror of
https://github.com/QuantumPackage/qp2.git
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110 lines
2.4 KiB
Fortran
110 lines
2.4 KiB
Fortran
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BEGIN_PROVIDER [ logical, mpi_initialized ]
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implicit none
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BEGIN_DOC
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! Always true. Initialized MPI
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END_DOC
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IRP_IF MPI
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include 'mpif.h'
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integer :: ierr
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call mpi_init(ierr)
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if (ierr /= MPI_SUCCESS) then
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print *, 'ierr = ', ierr
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stop 'Unable to initialize MPI'
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endif
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IRP_ENDIF
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mpi_initialized = .True.
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END_PROVIDER
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BEGIN_PROVIDER [ integer, mpi_rank ]
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&BEGIN_PROVIDER [ integer, mpi_size ]
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implicit none
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BEGIN_DOC
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! Rank of MPI process and number of MPI processes
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END_DOC
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IRP_IF MPI
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include 'mpif.h'
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PROVIDE mpi_initialized
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integer :: ierr
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call MPI_COMM_RANK (MPI_COMM_WORLD, mpi_rank, ierr)
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if (ierr /= MPI_SUCCESS) then
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print *, 'ierr = ', ierr
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stop 'Unable to get MPI rank'
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endif
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call MPI_COMM_SIZE (MPI_COMM_WORLD, mpi_size, ierr)
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if (ierr /= MPI_SUCCESS) then
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print *, 'ierr = ', ierr
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stop 'Unable to get MPI size'
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endif
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IRP_ELSE
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mpi_rank = 0
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mpi_size = 1
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IRP_ENDIF
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ASSERT (mpi_rank >= 0)
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ASSERT (mpi_rank < mpi_size)
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END_PROVIDER
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BEGIN_PROVIDER [ logical, mpi_master ]
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implicit none
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BEGIN_DOC
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! If true, rank is zero
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END_DOC
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mpi_master = (mpi_rank == 0)
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if (mpi_master.and.(mpi_size > 1)) then
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print *, 'MPI size: ', mpi_size
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endif
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END_PROVIDER
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BEGIN_TEMPLATE
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subroutine broadcast_chunks_$double(A, LDA)
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implicit none
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integer*8, intent(in) :: LDA
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$type, intent(inout) :: A(LDA)
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BEGIN_DOC
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! Broadcast with chunks of ~2GB
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END_DOC
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IRP_IF MPI_DEBUG
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print *, irp_here, mpi_rank
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call MPI_BARRIER(MPI_COMM_WORLD, ierr)
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IRP_ENDIF
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IRP_IF MPI
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include 'mpif.h'
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integer :: i, sze, ierr
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do i=1,LDA,200000000/$8
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sze = min(LDA-i+1, 200000000/$8)
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call MPI_BCAST (A(i), sze, MPI_$DOUBLE_PRECISION, 0, MPI_COMM_WORLD, ierr)
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if (ierr /= MPI_SUCCESS) then
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print *, irp_here//': Unable to broadcast chunks $double ', i
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stop -1
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endif
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call MPI_BARRIER(MPI_COMM_WORLD,ierr)
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enddo
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IRP_ENDIF
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end
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SUBST [ double, type, 8, DOUBLE_PRECISION ]
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double ; double precision ; 8 ; DOUBLE_PRECISION ;;
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integer ; integer ; 4 ; INTEGER ;;
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integer8 ; integer*8 ; 8 ; INTEGER8 ;;
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END_TEMPLATE
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subroutine mpi_print(string)
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implicit none
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BEGIN_DOC
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! Print string to stdout if the MPI rank is zero.
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END_DOC
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character*(*) :: string
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if (mpi_master) then
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print *, string
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endif
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end
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