SELF_Scalar_2D.f90 Source File


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module SELF_Scalar_2D

  use SELF_Constants
  use SELF_Scalar_2D_t
  use SELF_GPU
  use SELF_GPUBLAS
  use SELF_GPUInterfaces
  use iso_c_binding

  implicit none

  type,extends(Scalar2D_t),public :: Scalar2D
    character(3) :: backend = "gpu"
    type(c_ptr) :: blas_handle
    type(c_ptr) :: interior_gpu
    type(c_ptr) :: boundary_gpu
    type(c_ptr) :: boundarynormal_gpu
    type(c_ptr) :: extBoundary_gpu
    type(c_ptr) :: avgBoundary_gpu
    type(c_ptr) :: interpWork

  contains

    procedure,public :: Init => Init_Scalar2D
    procedure,public :: Free => Free_Scalar2D

    procedure,public :: UpdateHost => UpdateHost_Scalar2D
    procedure,public :: UpdateDevice => UpdateDevice_Scalar2D

    procedure,public :: BoundaryInterp => BoundaryInterp_Scalar2D
    procedure,public :: AverageSides => AverageSides_Scalar2D
    generic,public :: GridInterp => GridInterp_Scalar2D
    procedure,private :: GridInterp_Scalar2D
    generic,public :: Gradient => Gradient_Scalar2D
    procedure,private :: Gradient_Scalar2D

  endtype Scalar2D

contains

  subroutine Init_Scalar2D(this,interp,nVar,nElem)
    implicit none
    class(Scalar2D),intent(out) :: this
    type(Lagrange),intent(in),target :: interp
    integer,intent(in) :: nVar
    integer,intent(in) :: nElem
    ! Local
    integer(c_size_t) :: workSize

    this%interp => interp
    this%nVar = nVar
    this%nElem = nElem
    this%N = interp%N
    this%M = interp%M

    allocate(this%interior(1:interp%N+1,interp%N+1,nelem,nvar), &
             this%boundary(1:interp%N+1,1:4,1:nelem,1:nvar), &
             this%extBoundary(1:interp%N+1,1:4,1:nelem,1:nvar), &
             this%avgBoundary(1:interp%N+1,1:4,1:nelem,1:nvar), &
             this%boundarynormal(1:interp%N+1,1:4,1:nelem,1:2*nvar))

    allocate(this%meta(1:nVar))
    allocate(this%eqn(1:nVar))

    this%interior = 0.0_prec
    this%boundary = 0.0_prec
    this%extBoundary = 0.0_prec
    this%avgBoundary = 0.0_prec
    this%boundarynormal = 0.0_prec

    call gpuCheck(hipMalloc(this%interior_gpu,sizeof(this%interior)))
    call gpuCheck(hipMalloc(this%boundary_gpu,sizeof(this%boundary)))
    call gpuCheck(hipMalloc(this%extBoundary_gpu,sizeof(this%extBoundary)))
    call gpuCheck(hipMalloc(this%avgBoundary_gpu,sizeof(this%avgBoundary)))
    call gpuCheck(hipMalloc(this%boundarynormal_gpu,sizeof(this%boundarynormal)))
    workSize = (interp%N+1)*(interp%M+1)*nelem*nvar*prec
    call gpuCheck(hipMalloc(this%interpWork,workSize))

    call this%UpdateDevice()

    call hipblasCheck(hipblasCreate(this%blas_handle))

  endsubroutine Init_Scalar2D

  subroutine Free_Scalar2D(this)
    implicit none
    class(Scalar2D),intent(inout) :: this

    this%nVar = 0
    this%nElem = 0
    this%interp => null()
    deallocate(this%interior)
    deallocate(this%boundary)
    deallocate(this%extBoundary)
    deallocate(this%avgBoundary)
    deallocate(this%boundarynormal)
    deallocate(this%meta)
    deallocate(this%eqn)

    call gpuCheck(hipFree(this%interior_gpu))
    call gpuCheck(hipFree(this%boundary_gpu))
    call gpuCheck(hipFree(this%extBoundary_gpu))
    call gpuCheck(hipFree(this%avgBoundary_gpu))
    call gpuCheck(hipFree(this%boundarynormal_gpu))
    call gpuCheck(hipFree(this%interpWork))
    call hipblasCheck(hipblasDestroy(this%blas_handle))

  endsubroutine Free_Scalar2D

  subroutine UpdateHost_Scalar2D(this)
    implicit none
    class(Scalar2D),intent(inout) :: this

    call gpuCheck(hipMemcpy(c_loc(this%interior),this%interior_gpu,sizeof(this%interior),hipMemcpyDeviceToHost))
    call gpuCheck(hipMemcpy(c_loc(this%boundary),this%boundary_gpu,sizeof(this%boundary),hipMemcpyDeviceToHost))
    call gpuCheck(hipMemcpy(c_loc(this%extboundary),this%extboundary_gpu,sizeof(this%extboundary),hipMemcpyDeviceToHost))
    call gpuCheck(hipMemcpy(c_loc(this%avgboundary),this%avgboundary_gpu,sizeof(this%avgboundary),hipMemcpyDeviceToHost))
    call gpuCheck(hipMemcpy(c_loc(this%boundarynormal),this%boundarynormal_gpu,sizeof(this%boundarynormal),hipMemcpyDeviceToHost))

  endsubroutine UpdateHost_Scalar2D

  subroutine UpdateDevice_Scalar2D(this)
    implicit none
    class(Scalar2D),intent(inout) :: this

    call gpuCheck(hipMemcpy(this%interior_gpu,c_loc(this%interior),sizeof(this%interior),hipMemcpyHostToDevice))
    call gpuCheck(hipMemcpy(this%boundary_gpu,c_loc(this%boundary),sizeof(this%boundary),hipMemcpyHostToDevice))
    call gpuCheck(hipMemcpy(this%extboundary_gpu,c_loc(this%extboundary),sizeof(this%extboundary),hipMemcpyHostToDevice))
    call gpuCheck(hipMemcpy(this%avgboundary_gpu,c_loc(this%avgboundary),sizeof(this%avgboundary),hipMemcpyHostToDevice))
    call gpuCheck(hipMemcpy(this%boundarynormal_gpu,c_loc(this%boundarynormal),sizeof(this%boundarynormal),hipMemcpyHostToDevice))

  endsubroutine UpdateDevice_Scalar2D

  subroutine BoundaryInterp_Scalar2D(this)
    implicit none
    class(Scalar2D),intent(inout) :: this

    call BoundaryInterp_2D_gpu(this%interp%bMatrix_gpu,this%interior_gpu,this%boundary_gpu, &
                               this%interp%N,this%nvar,this%nelem)

  endsubroutine BoundaryInterp_Scalar2D

  subroutine AverageSides_Scalar2D(this)
    implicit none
    class(Scalar2D),intent(inout) :: this

    call Average_gpu(this%avgBoundary_gpu,this%boundary_gpu,this%extBoundary_gpu,size(this%boundary))

  endsubroutine AverageSides_Scalar2D

  subroutine GridInterp_Scalar2D(this,f)
    implicit none
    class(Scalar2D),intent(inout) :: this
    type(c_ptr),intent(inout) :: f

    call self_blas_matrixop_dim1_2d(this%interp%iMatrix_gpu,this%interior_gpu, &
                                    this%interpWork,this%N,this%M,this%nvar,this%nelem, &
                                    this%blas_handle)

    call self_blas_matrixop_dim2_2d(this%interp%iMatrix_gpu,this%interpWork,f, &
                                    0.0_c_prec,this%N,this%M,this%nvar,this%nelem, &
                                    this%blas_handle)

  endsubroutine GridInterp_Scalar2D

  subroutine Gradient_Scalar2D(this,df)
    implicit none
    class(Scalar2D),intent(in) :: this
    type(c_ptr),intent(inout) :: df
    !Local
    real(prec),pointer :: df_p(:,:,:,:,:)
    real(prec),pointer :: dfloc(:,:,:,:)
    type(c_ptr) :: dfc

    call c_f_pointer(df,df_p,[this%interp%N+1,this%interp%N+1,this%nelem,this%nvar,2])

    dfloc(1:,1:,1:,1:) => df_p(1:,1:,1:,1:,1)
    dfc = c_loc(dfloc)
    call self_blas_matrixop_dim1_2d(this%interp%dMatrix_gpu,this%interior_gpu,dfc, &
                                    this%interp%N,this%interp%N,this%nvar,this%nelem,this%blas_handle)

    dfloc(1:,1:,1:,1:) => df_p(1:,1:,1:,1:,2)
    dfc = c_loc(dfloc)
    call self_blas_matrixop_dim2_2d(this%interp%dMatrix_gpu,this%interior_gpu,dfc,0.0_c_prec, &
                                    this%interp%N,this%interp%N,this%nvar,this%nelem,this%blas_handle)

    dfloc => null()
    df_p => null()

  endsubroutine Gradient_Scalar2D

endmodule SELF_Scalar_2D