Convert a CPU matrix to a GPU matrix and use a CUDA preconditioner on the GPU. More...

Inheritance diagram for Opm::gpuistl::PreconditionerCPUMatrixToGPUMatrix< X, Y, CudaPreconditionerType, CPUMatrixType >:

Public Types
using	domain_type = X
	The domain type of the preconditioner.

using	range_type = Y
	The range type of the preconditioner.

using	field_type = typename X::field_type
	The field type of the preconditioner.

Public Member Functions
template<typename... Args>
	PreconditionerCPUMatrixToGPUMatrix (const CPUMatrixType &A, Args &&... args)

void	pre (X &x, Y &b) override
	Prepare the preconditioner.

void	apply (X &v, const Y &d) override
	Apply the preconditoner.

void	post (X &x) override
	Clean up.

Dune::SolverCategory::Category	category () const override
	Category of the preconditioner (see SolverCategory::Category)

void	update () override
	Copies the CPU matrix to the GPU matrix then calls the GPU preconditioner update function.

virtual bool	hasPerfectUpdate () const override

Static Public Member Functions
static constexpr bool	shouldCallPre ()

static constexpr bool	shouldCallPost ()

Detailed Description

template<class X, class Y, class CudaPreconditionerType, class CPUMatrixType>
class Opm::gpuistl::PreconditionerCPUMatrixToGPUMatrix< X, Y, CudaPreconditionerType, CPUMatrixType >

Convert a CPU matrix to a GPU matrix and use a CUDA preconditioner on the GPU.

The use case is having a CPU matrix created by a CPU simulator being solved by a GPU BICGSTAB solver.

Template Parameters

X	the domain type (should be on the GPU). Typicall a GpuVector
Y	the range type (should be on the GPU). Typicall a GpuVector
CudaPreconditionerType	the preconditioner taking GpuVector<real_type> as arguments to apply and expecting a GPU matrix as the first argument to its constructor.
CPUMatrixType	the type of the CPU matrix. This is the type that will be copied to the GPU.