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PROGRAM coproc
#ifdef USE_CATALYST
use CoProcessor ! ParaView Catalyst adaptor
use catalyst ! ParaView Catalyst API
#endif
use SparseMatrix ! contains initialize() and finalize()
use PoissonDiscretization ! contains fillmatrixandrhs()
use ConjugateGradient ! contains solve()
use Box ! contains getownedbox()
implicit none
include 'mpif.h'
integer :: numtasks,rank,ierr,allocatestatus
integer :: dimensions(3), ownedbox(6)
type(SparseMatrixData) :: sm
real(kind=8), DIMENSION(:), allocatable :: x, rhs
call mpi_init(ierr)
call mpi_comm_size(MPI_COMM_WORLD, numtasks, ierr)
call mpi_comm_rank(MPI_COMM_WORLD, rank, ierr)
#ifdef USE_CATALYST
call catalyst_initialize()
#endif
dimensions(1) = 10
dimensions(2) = 10
dimensions(3) = 10
! given a piece between 1 and numtasks, compute the nodes that
! are owned by this process (ownedbox)
call getownedbox(rank+1, numtasks, dimensions, ownedbox)
call initialize(sm, ownedbox, dimensions)
! each process has a full copy of the solution and the RHS to keep things simple
allocate(x(dimensions(1)*dimensions(2)*dimensions(3)), rhs(dimensions(1)*dimensions(2)*dimensions(3)), STAT = allocatestatus)
if (allocatestatus /= 0) STOP "*** FEDriver.F90: Not enough memory for arrays ***"
call fillmatrixandrhs(sm, rhs, ownedbox, dimensions)
call solve(dimensions, sm, x, rhs)
#ifdef USE_CATALYST
call catalyst_finalize()
#endif
deallocate(x, rhs)
call finalize(sm)
call mpi_finalize(ierr)
write(*,*) 'Finished on rank', rank, 'of', numtasks
end program coproc
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