DGModel2D Derived Type

  1. SELF_DGModel2D.f90
  2. SELF_DGModel2D
  3. DGModel2D

type, public, extends(DGModel2D_t) :: DGModel2D

Device-resident staging for the AMR solution transfer (Stage 6a). These buffers persist across adaptation epochs and grow monotonically, so a settled run performs no allocation here at all; xferAllocBytes / planAllocElem record the current capacity.


Inherits

type~~dgmodel2d~~InheritsGraph type~dgmodel2d DGModel2D c_ptr c_ptr type~dgmodel2d->c_ptr xferOld_gpu, xferKind_gpu, xferElem_gpu, xferFamily_gpu, xferDepth_gpu, xferPath_gpu, xferWin_gpu type~dgmodel2d_t DGModel2D_t type~dgmodel2d->type~dgmodel2d_t type~mappedscalar2d~2 MappedScalar2D type~dgmodel2d_t->type~mappedscalar2d~2 solution, source, fluxDivergence, dSdt, workSol type~mappedvector2d MappedVector2D type~dgmodel2d_t->type~mappedvector2d solutionGradient, flux type~semquad SEMQuad type~dgmodel2d_t->type~semquad geometry type~boundaryconditionlist BoundaryConditionList type~dgmodel2d_t->type~boundaryconditionlist hyperbolicBCs, parabolicBCs type~mesh2d Mesh2D type~dgmodel2d_t->type~mesh2d mesh type~model Model type~dgmodel2d_t->type~model type~mappedscalar2d_t MappedScalar2D_t type~mappedscalar2d~2->type~mappedscalar2d_t type~mappedvector2d_t MappedVector2D_t type~mappedvector2d->type~mappedvector2d_t type~tensor2d~2 Tensor2D type~semquad->type~tensor2d~2 dxds, dsdx type~scalar2d~2 Scalar2D type~semquad->type~scalar2d~2 nScale, J type~vector2d~2 Vector2D type~semquad->type~vector2d~2 x, nHat, xMesh type~lagrange Lagrange type~semquad->type~lagrange meshToModel type~boundarycondition BoundaryCondition type~boundaryconditionlist->type~boundarycondition current, head, tail type~mesh2d_t Mesh2D_t type~mesh2d->type~mesh2d_t type~mappedscalar2d_t->type~semquad geometry type~mappedscalar2d_t->type~scalar2d~2 type~tensor2d_t Tensor2D_t type~tensor2d~2->type~tensor2d_t type~mappedvector2d_t->type~semquad geometry type~mappedvector2d_t->type~vector2d~2 type~scalar2d_t Scalar2D_t type~scalar2d~2->type~scalar2d_t type~vector2d_t Vector2D_t type~vector2d~2->type~vector2d_t type~lagrange_t Lagrange_t type~lagrange->type~lagrange_t type~boundarycondition->c_ptr elements_gpu, sides_gpu type~boundarycondition->type~boundarycondition next, prev type~semmesh SEMMesh type~mesh2d_t->type~semmesh type~self_dataobj SELF_DataObj type~tensor2d_t->type~self_dataobj type~vector2d_t->type~self_dataobj type~domaindecomposition DomainDecomposition type~semmesh->type~domaindecomposition decomp type~scalar2d_t->type~self_dataobj type~self_dataobj->type~lagrange interp type~metadata Metadata type~self_dataobj->type~metadata meta EquationParser EquationParser type~self_dataobj->EquationParser eqn type~domaindecomposition_t DomainDecomposition_t type~domaindecomposition->type~domaindecomposition_t

Contents

Variables

Type-Bound Procedures

Source Code

DGModel2D

Components

TypeVisibilityAttributesNameInitial
type(MappedScalar2D), public :: dSdt
real(kind=prec), public :: dt
real(kind=prec), public :: entropy
type(MappedVector2D), public :: flux
type(MappedScalar2D), public :: fluxDivergence
type(SEMQuad), public, pointer:: geometry=> null()
logical, public :: gradient_enabled =.false.
type(BoundaryConditionList), public :: hyperbolicBCs
integer, public :: ioIterate =0
type(Mesh2D), public, pointer:: mesh=> null()
integer, public :: nUnmappedBoundaries =0

The first unregistered bcid found, and meaningful only when nUnmappedBoundaries > 0: -1 is itself a legal bcid, so it cannot double as an "absent" marker.
integer, public :: nstepped =0
integer, public :: nvar
type(BoundaryConditionList), public :: parabolicBCs

Mesh boundary edges whose sideInfo(5) boundary condition id matches no registered boundary condition, counted over the whole domain by MapBoundaryConditions and summed across ranks. Nothing writes solution%extBoundary on such an edge, so the Riemann solver reads zeros at t = 0 and stale values afterwards. ReportUnmappedBoundaries warns about them once, from the top of ForwardStep.
integer, public :: planAllocElem =0

new-element count the plan buffers are sized for
integer, public :: planAllocStride =0

plan%path leading dimension they are sized for
logical, public :: prescribed_bcs_enabled =.true.
type(MappedScalar2D), public :: solution
type(MappedVector2D), public :: solutionGradient
type(MappedScalar2D), public :: source
real(kind=prec), public :: t
logical, public :: tecplot_enabled =.true.
procedure(SELF_timeIntegrator), public, pointer:: timeIntegrator=> Euler_timeIntegrator
real(kind=prec), public, allocatable:: transferStage(:,:,:,:)

Migrated old-element window, held between MigrateOldWindow and ApplyTransferPlan on the multi-rank path: the contiguous run of OLD elements this rank's new element range references. Flat, because it is viewed through a rank-remapped pointer whose element lower bound is the window's first GLOBAL old element index - the numbering the transfer plan uses. Persistent and grow-only, so a settled adapting run allocates nothing here. The GPU backend overrides the migration and keeps the window in device memory instead, leaving this unallocated.
logical, public :: unmappedBoundariesReported =.false.

Pre-regrid copy of the solution, held between StageSolutionForTransfer and ApplyTransferPlan so that Regrid is free to release the storage it was read from. The base implementation stages on the host; the GPU backend overrides both procedures and stages device-side instead, leaving this unallocated.
integer, public :: unmappedBoundaryID =-1
real(kind=prec), public, allocatable:: winStage(:)
integer, public :: winStageFirst =0

global old index of winStage's first element
integer, public :: winStageN =0

window element count; 0 means no window is migrated
type(MappedScalar2D), public :: workSol
integer(kind=c_size_t), public :: xferAllocBytes =0
type(c_ptr), public :: xferDepth_gpu =c_null_ptr

plan%depth
type(c_ptr), public :: xferElem_gpu =c_null_ptr

plan%sourceElem
type(c_ptr), public :: xferFamily_gpu =c_null_ptr

plan%family
type(c_ptr), public :: xferKind_gpu =c_null_ptr

plan%sourceKind
integer, public :: xferNOld =0

element count of the staged field (its device stride) Migrated old-element window, device-resident: the contiguous run of OLD elements this rank's new element range references, assembled by MigrateOldWindow and consumed by ApplyTransferPlan. Its own capacity and lifecycle, separate from xferOld_gpu, because the two have different lifetimes and different sizes - a window is the hull of a rank's new range in the OLD numbering and can be larger than the local old field - and because keeping them apart is what lets an unpaired stage/migrate be caught rather than silently served.
integer, public :: xferNWin =0

window element count (its device stride); 0 means no window
type(c_ptr), public :: xferOld_gpu =c_null_ptr

pre-regrid solution, staged device-side
type(c_ptr), public :: xferPath_gpu =c_null_ptr

plan%path
integer(kind=c_size_t), public :: xferWinBytes =0

current capacity, grown but never shrunk
integer, public :: xferWinFirst =0

global old index of the window's first element
type(c_ptr), public :: xferWin_gpu =c_null_ptr

Type-Bound Procedures

procedure, public :: AdditionalFree => AdditionalFree_Model

  • public subroutine AdditionalFree_Model(this)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: AdditionalInit => AdditionalInit_Model

  • public subroutine AdditionalInit_Model(this)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: AdditionalOutput => AdditionalOutput_Model

  • public subroutine AdditionalOutput_Model(this, fileid)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    integer(kind=HID_T), intent(in) :: fileid

procedure, public :: ApplyTransferPlan => ApplyTransferPlan_DGModel2D

  • public subroutine ApplyTransferPlan_DGModel2D(this, plan, interp, eFirst, eLast, uGlobal, oldFirst)

    Apply the transfer plan on the device, writing solution%interior_gpu directly and moving no solution data across the PCIe/xGMI link - on any number of ranks.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout), target:: this
    type(TransferPlan2D), intent(in), target:: plan
    type(Lagrange), intent(in) :: interp
    integer, intent(in) :: eFirst
    integer, intent(in) :: eLast
    real(kind=prec), intent(in), optional contiguous:: uGlobal(:,:,:,:)
    integer, intent(in), optional :: oldFirst

procedure, public :: BoundaryFlux => BoundaryFlux_DGModel2D

procedure, public :: CalculateEntropy => CalculateEntropy_DGModel2D

procedure, public :: CalculateSolutionGradient => CalculateSolutionGradient_DGModel2D

procedure, public :: CalculateTendency => CalculateTendency_DGModel2D

procedure, public :: DownloadOldWindow => DownloadOldWindow_DGModel2D

  • public subroutine DownloadOldWindow_DGModel2D(this, wFirst, wLast, uWin)

    Copy the device-resident migrated window to the host, for the SELF_AMR_MIGRATE_VERIFY diagnostic only. This is exactly the host traffic the device path exists to avoid, so it must never appear on the default path.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(in) :: this
    integer, intent(in) :: wFirst
    integer, intent(in) :: wLast
    real(kind=prec), intent(out), target, contiguous:: uWin(:,:,:,:)

procedure, public :: Euler_timeIntegrator

  • public subroutine Euler_timeIntegrator(this, tn)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    real(kind=prec), intent(in) :: tn

procedure, public :: FluxMethod => fluxmethod_DGModel2D

procedure, public :: ForwardStep => ForwardStep_Model

  • public subroutine ForwardStep_Model(this, tn, dt, ioInterval)

    Forward steps the model using the associated tendency procedure and time integrator

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    real(kind=prec), intent(in) :: tn
    real(kind=prec), intent(in) :: dt
    real(kind=prec), intent(in) :: ioInterval

procedure, public :: Free => Free_DGModel2D

  • public subroutine Free_DGModel2D(this)

    Free the 2D DG model, including GPU BC arrays.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this

procedure, public :: GetSimulationTime

  • public subroutine GetSimulationTime(this, t)

    Returns the current simulation time stored in the model % t attribute

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(out) :: t

procedure, public :: IncrementIOCounter

  • public subroutine IncrementIOCounter(this)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: Init => Init_DGModel2D

  • public subroutine Init_DGModel2D(this, mesh, geometry)

    Initialize the 2D DG model, then upload BC element/side arrays to GPU.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(out) :: this
    type(Mesh2D), intent(in), target:: mesh
    type(SEMQuad), intent(in), target:: geometry

procedure, public :: LowStorageRK2_timeIntegrator

  • public subroutine LowStorageRK2_timeIntegrator(this, tn)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    real(kind=prec), intent(in) :: tn

procedure, public :: LowStorageRK3_timeIntegrator

  • public subroutine LowStorageRK3_timeIntegrator(this, tn)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    real(kind=prec), intent(in) :: tn

procedure, public :: LowStorageRK4_timeIntegrator

  • public subroutine LowStorageRK4_timeIntegrator(this, tn)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    real(kind=prec), intent(in) :: tn

procedure, public :: MapBoundaryConditions => MapBoundaryConditions_DGModel2D_t

  • public subroutine MapBoundaryConditions_DGModel2D_t(this)

    Scan the mesh sideInfo and populate the elements/sides arrays for each registered boundary condition.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this

procedure, public :: MigrateOldWindow => MigrateOldWindow_DGModel2D

  • public subroutine MigrateOldWindow_DGModel2D(this, winFirst, winLast, wFirst, wLast, nBytesRecv, nBytesSent, nElemRemote)

    Assemble this rank's window of the pre-regrid old field IN DEVICE MEMORY, replacing the base implementation's host-memory migration. The rank's own run is copied device-to-device and the peers' runs are received directly into device memory, so no solution data crosses the host link and the windowed ApplyTransferPlan that follows runs as a device kernel.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this
    integer, intent(in) :: winFirst(:)
    integer, intent(in) :: winLast(:)
    integer, intent(in) :: wFirst
    integer, intent(in) :: wLast
    integer(kind=int64), intent(inout) :: nBytesRecv
    integer(kind=int64), intent(inout) :: nBytesSent
    integer(kind=int64), intent(inout) :: nElemRemote

procedure, public :: PostStepHook => PostStepHook_Model

  • public subroutine PostStepHook_Model(this)

    PostStepHook is a template routine invoked by the time integrators once immediately after each completed time step (after this%t has advanced by this%dt). The default implementation is a no-op.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: PreStepHook => PreStepHook_Model

  • public subroutine PreStepHook_Model(this)

    PreStepHook is a template routine invoked by the time integrators once immediately before each time step is taken (before any Runge-Kutta stages of that step). The default implementation is a no-op.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: PreTendencyHook => PreTendencyHook_Model

  • public subroutine PreTendencyHook_Model(this)

    PreTendencyHook is a template routine that is used to house any additional calculations that you want to execute at the beginning of the tendency calculation routine. This default PreTendencyHook simply returns back to the caller without executing any instructions

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: PrintType => PrintType_Model

  • public subroutine PrintType_Model(this)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this

procedure, public :: ReadModel => Read_DGModel2D_t

  • public subroutine Read_DGModel2D_t(this, fileName)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this
    character, intent(in) :: fileName

procedure, public :: Regrid => Regrid_DGModel2D

  • public subroutine Regrid_DGModel2D(this, mesh, geometry)

    GPU regrid: release the device copies of the old boundary-condition element/side arrays, rebuild the model storage and BC maps on the new mesh (base Regrid), then upload the new BC arrays to the device - the same device bookkeeping Init/Free do around the base Init/Free.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this
    type(Mesh2D), intent(in), target:: mesh
    type(SEMQuad), intent(in), target:: geometry

procedure, public :: ReportEntropy => ReportEntropy_Model

  • public subroutine ReportEntropy_Model(this)

    Base method for reporting the entropy of a model to stdout. Only override this procedure if additional reporting is needed. Alternatively, if you think additional reporting would be valuable for all models, open a pull request with modifications to this base method.

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this

procedure, public :: ReportMetrics => ReportMetrics_DGModel2D_t

  • public subroutine ReportMetrics_DGModel2D_t(this)

    Base method for reporting the entropy of a model to stdout. Only override this procedure if additional reporting is needed. Alternatively, if you think additional reporting would be valuable for all models, open a pull request with modifications to this base method.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this

procedure, public :: ReportUnmappedBoundaries => ReportUnmappedBoundaries_DGModel2D_t

  • public subroutine ReportUnmappedBoundaries_DGModel2D_t(this)

    Warn, once, about mesh boundary edges whose bcid has no registered boundary condition. MapBoundaryConditions establishes the count; ForwardStep calls this.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this

procedure, public :: ReportUserMetrics => ReportUserMetrics_Model

  • public subroutine ReportUserMetrics_Model(this)

    Method that can be overridden by users to report their own custom metrics after file io

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this

procedure, public :: SetBoundaryCondition => setboundarycondition_DGModel2D_t

  • public subroutine setboundarycondition_DGModel2D_t(this)

    Apply registered boundary conditions for the solution. Each boundary condition method loops over its own boundary faces.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this

procedure, public :: SetGradientBoundaryCondition => setgradientboundarycondition_DGModel2D_t

  • public subroutine setgradientboundarycondition_DGModel2D_t(this)

    Apply registered boundary conditions for the solution gradient. Each boundary condition method loops over its own boundary faces.

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this

procedure, public :: SetMetadata => SetMetadata_DGModel2D_t

procedure, public :: SetNumberOfVariables => SetNumberOfVariables_Model

procedure, public :: SetSimulationTime

  • public subroutine SetSimulationTime(this, t)

    Sets the model % t attribute with the provided simulation time

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    real(kind=prec), intent(in) :: t

generic, public :: SetSolution => SetSolutionFromChar_DGModel2D_t, SetSolutionFromEqn_DGModel2D_t

generic, public :: SetTimeIntegrator => SetTimeIntegrator_withChar

  • public subroutine SetTimeIntegrator_withChar(this, integrator)

    Sets the time integrator method, using a character input

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(inout) :: this
    character, intent(in) :: integrator

procedure, public :: SourceMethod => sourcemethod_DGModel2D

procedure, public :: StageSolutionForTransfer => StageSolutionForTransfer_DGModel2D

  • public subroutine StageSolutionForTransfer_DGModel2D(this)

    Stage the pre-regrid solution on the DEVICE (Stage 6a), replacing the base implementation's device-to-host copy of the whole field. Regrid subsequently releases solution%interior_gpu, so the field is copied device-to-device into a buffer this model owns; ApplyTransferPlan then reads it from there.

    Read more…

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this

procedure, public :: UpdateGRK2 => UpdateGRK2_DGModel2D

  • public subroutine UpdateGRK2_DGModel2D(this, m)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this
    integer, intent(in) :: m

procedure, public :: UpdateGRK3 => UpdateGRK3_DGModel2D

  • public subroutine UpdateGRK3_DGModel2D(this, m)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this
    integer, intent(in) :: m

procedure, public :: UpdateGRK4 => UpdateGRK4_DGModel2D

  • public subroutine UpdateGRK4_DGModel2D(this, m)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this
    integer, intent(in) :: m

procedure, public :: UpdateSolution => UpdateSolution_DGModel2D

  • public subroutine UpdateSolution_DGModel2D(this, dt)

    Computes a solution update as , where dt is either provided through the interface or taken as the Model's stored time step size (model % dt)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D), intent(inout) :: this
    real(kind=prec), intent(in), optional :: dt

procedure, public :: WriteModel => Write_DGModel2D_t

  • public subroutine Write_DGModel2D_t(this, fileName)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this
    character, intent(in), optional :: fileName

procedure, public :: WriteTecplot => WriteTecplot_DGModel2D_t

  • public subroutine WriteTecplot_DGModel2D_t(this, filename)

    Arguments

    TypeIntentOptionalAttributesName
    class(DGModel2D_t), intent(inout) :: this
    character, intent(in), optional :: filename

procedure, public :: entropy_func => entropy_func_Model

  • public pure function entropy_func_Model(this, s) result(e)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)

    Return Value real(kind=prec)

procedure, public :: flux1D => flux1d_Model

  • public pure function flux1d_Model(this, s, dsdx) result(flux)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar)

    Return Value real(kind=prec)(1:this%nvar)

procedure, public :: flux2D => flux2d_Model

  • public pure function flux2d_Model(this, s, dsdx) result(flux)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar,1:2)

    Return Value real(kind=prec)(1:this%nvar,1:2)

procedure, public :: flux3D => flux3d_Model

  • public pure function flux3d_Model(this, s, dsdx) result(flux)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar,1:3)

    Return Value real(kind=prec)(1:this%nvar,1:3)

procedure, public :: riemannflux1d => riemannflux1d_Model

  • public pure function riemannflux1d_Model(this, sL, sR, dsdx, nhat) result(flux)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: sL(1:this%nvar)
    real(kind=prec), intent(in) :: sR(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar)
    real(kind=prec), intent(in) :: nhat

    Return Value real(kind=prec)(1:this%nvar)

procedure, public :: riemannflux2d => riemannflux2d_Model

  • public pure function riemannflux2d_Model(this, sL, sR, dsdx, nhat) result(flux)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: sL(1:this%nvar)
    real(kind=prec), intent(in) :: sR(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar,1:2)
    real(kind=prec), intent(in) :: nhat(1:2)

    Return Value real(kind=prec)(1:this%nvar)

procedure, public :: riemannflux3d => riemannflux3d_Model

  • public pure function riemannflux3d_Model(this, sL, sR, dsdx, nhat) result(flux)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: sL(1:this%nvar)
    real(kind=prec), intent(in) :: sR(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar,1:3)
    real(kind=prec), intent(in) :: nhat(1:3)

    Return Value real(kind=prec)(1:this%nvar)

procedure, public :: source1d => source1d_Model

  • public pure function source1d_Model(this, s, dsdx) result(source)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar)

    Return Value real(kind=prec)(1:this%nvar)

procedure, public :: source2d => source2d_Model

  • public pure function source2d_Model(this, s, dsdx) result(source)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar,1:2)

    Return Value real(kind=prec)(1:this%nvar)

procedure, public :: source3d => source3d_Model

  • public pure function source3d_Model(this, s, dsdx) result(source)

    Arguments

    TypeIntentOptionalAttributesName
    class(Model), intent(in) :: this
    real(kind=prec), intent(in) :: s(1:this%nvar)
    real(kind=prec), intent(in) :: dsdx(1:this%nvar,1:3)

    Return Value real(kind=prec)(1:this%nvar)

Source Code

  type,extends(DGModel2D_t) :: DGModel2D
    !! Device-resident staging for the AMR solution transfer (Stage 6a). These buffers persist
    !! across adaptation epochs and grow monotonically, so a settled run performs no allocation
    !! here at all; xferAllocBytes / planAllocElem record the current capacity.
    type(c_ptr) :: xferOld_gpu = c_null_ptr !! pre-regrid solution, staged device-side
    integer(c_size_t) :: xferAllocBytes = 0
    type(c_ptr) :: xferKind_gpu = c_null_ptr !! plan%sourceKind
    type(c_ptr) :: xferElem_gpu = c_null_ptr !! plan%sourceElem
    type(c_ptr) :: xferFamily_gpu = c_null_ptr !! plan%family
    type(c_ptr) :: xferDepth_gpu = c_null_ptr !! plan%depth
    type(c_ptr) :: xferPath_gpu = c_null_ptr !! plan%path
    integer :: planAllocElem = 0 !! new-element count the plan buffers are sized for
    integer :: planAllocStride = 0 !! plan%path leading dimension they are sized for
    integer :: xferNOld = 0 !! element count of the staged field (its device stride)
    !! Migrated old-element window, device-resident: the contiguous run of OLD elements this
    !! rank's new element range references, assembled by MigrateOldWindow and consumed by
    !! ApplyTransferPlan. Its own capacity and lifecycle, separate from xferOld_gpu, because the
    !! two have different lifetimes and different sizes - a window is the hull of a rank's new
    !! range in the OLD numbering and can be larger than the local old field - and because keeping
    !! them apart is what lets an unpaired stage/migrate be caught rather than silently served.
    type(c_ptr) :: xferWin_gpu = c_null_ptr
    integer(c_size_t) :: xferWinBytes = 0 !! current capacity, grown but never shrunk
    integer :: xferNWin = 0 !! window element count (its device stride); 0 means no window
    integer :: xferWinFirst = 0 !! global old index of the window's first element

  contains

    procedure :: Init => Init_DGModel2D
    procedure :: Free => Free_DGModel2D
    procedure :: Regrid => Regrid_DGModel2D
    procedure :: StageSolutionForTransfer => StageSolutionForTransfer_DGModel2D
    procedure :: ApplyTransferPlan => ApplyTransferPlan_DGModel2D
    procedure :: MigrateOldWindow => MigrateOldWindow_DGModel2D
    procedure :: DownloadOldWindow => DownloadOldWindow_DGModel2D

    procedure :: UpdateSolution => UpdateSolution_DGModel2D

    procedure :: CalculateEntropy => CalculateEntropy_DGModel2D
    procedure :: BoundaryFlux => BoundaryFlux_DGModel2D
    procedure :: FluxMethod => fluxmethod_DGModel2D
    procedure :: SourceMethod => sourcemethod_DGModel2D

    procedure :: UpdateGRK2 => UpdateGRK2_DGModel2D
    procedure :: UpdateGRK3 => UpdateGRK3_DGModel2D
    procedure :: UpdateGRK4 => UpdateGRK4_DGModel2D

    procedure :: CalculateSolutionGradient => CalculateSolutionGradient_DGModel2D
    procedure :: CalculateTendency => CalculateTendency_DGModel2D

  endtype DGModel2D