Backend_cuda

Functions
t_kernels *	new_vtable_cuda (MPI_Datatype type)
	Create new t_kernels data structure. More...
void	pack_cuda_int (int *buffer, int *data, int *buffer_idxlist, int buffer_size, int offset, int *transform)
	Packing function for int arrays. More...
void	pack_cuda_float (float *buffer, float *data, int *buffer_idxlist, int buffer_size, int offset, int *transform)
	Packing function for float arrays. More...
void	pack_cuda_double (double *buffer, double *data, int *buffer_idxlist, int buffer_size, int offset, int *transform)
	Packing function for double arrays. More...
void	unpack_cuda_int (int *buffer, int *data, int *buffer_idxlist, int buffer_size, int offset, int *transform)
	Unpacking function for int arrays. More...
void	unpack_cuda_float (float *buffer, float *data, int *buffer_idxlist, int buffer_size, int offset, int *transform)
	Unpacking function for float arrays. More...
void	unpack_cuda_double (double *buffer, double *data, int *buffer_idxlist, int buffer_size, int offset, int *transform)
	Unpacking function for double arrays. More...
void *	allocator_cuda (size_t buffer_size)
	Allocate array. More...
void	deallocator_cuda (void *buffer)
	Deallocate array. More...
void	memcpy_h2d (int *buffer_cuda, int *buffer_cpu, int buffer_size)
	Copy memory from host to device. More...

Detailed Description

CUDA specific implementation

Function Documentation

allocator_cuda()

void* allocator_cuda

(

size_t

buffer_size

)

Allocate array.

Parameters

[in]

buffer_size

byte size of the array to be allocated

Returns

pointer to the allocated memory

deallocator_cuda()

void deallocator_cuda

(

void *

buffer

)

Deallocate array.

Parameters

[in,out]

buffer

Pointer to the memory to be deallocated

memcpy_h2d()

void memcpy_h2d	(	int *	buffer_cuda,
		int *	buffer_cpu,
		int	buffer_size
	)

Copy memory from host to device.

Parameters

[out]	buffer_cuda	pointer to the destination GPU memory
[in]	buffer_cpu	pointer to the source CPU memory
[in]	buffer_size	byte size to be copied

new_vtable_cuda()

t_kernels* new_vtable_cuda

(

MPI_Datatype

type

)

Create new t_kernels data structure.

Parameters

[in]

type

MPI datatype of the exchanged fields

Returns

pointer to t_kernels structure

pack_cuda_double()

void pack_cuda_double	(	double *	buffer,
		double *	data,
		int *	buffer_idxlist,
		int	buffer_size,
		int	offset,
		int *	transform
	)

Packing function for double arrays.

Pack array data into a buffer using the buffer_idxlist

Parameters

[out]	buffer	double array to be filled
[in]	data	double array with the data
[in]	buffer_idxlist	integer array with the information to fill the buffer
[in]	buffer_size	size of the buffer to be filled (it can be a subset of the buffer array)
[in]	offset	buffer offset to start the filling of the buffer array
[in]	transform	array of indices to transform the memory layout

pack_cuda_float()

void pack_cuda_float	(	float *	buffer,
		float *	data,
		int *	buffer_idxlist,
		int	buffer_size,
		int	offset,
		int *	transform
	)

Packing function for float arrays.

Pack array data into a buffer using the buffer_idxlist

Parameters

[out]	buffer	float array to be filled
[in]	data	float array with the data
[in]	buffer_idxlist	integer array with the information to fill the buffer
[in]	buffer_size	size of the buffer to be filled (it can be a subset of the buffer array)
[in]	offset	buffer offset to start the filling of the buffer array
[in]	transform	array of indices to transform the memory layout

pack_cuda_int()

void pack_cuda_int	(	int *	buffer,
		int *	data,
		int *	buffer_idxlist,
		int	buffer_size,
		int	offset,
		int *	transform
	)

Packing function for int arrays.

Pack array data into a buffer using the buffer_idxlist

Parameters

[out]	buffer	integer array to be filled
[in]	data	integer array with the data
[in]	buffer_idxlist	integer array with the information to fill the buffer
[in]	buffer_size	size of the buffer to be filled (it can be a subset of the buffer array)
[in]	offset	buffer offset to start the filling of the buffer array
[in]	transform	array of indices to transform the memory layout

unpack_cuda_double()

void unpack_cuda_double	(	double *	buffer,
		double *	data,
		int *	buffer_idxlist,
		int	buffer_size,
		int	offset,
		int *	transform
	)

Unpacking function for double arrays.

Unpack beffer into array data using the buffer_idxlist

Parameters

[in]	buffer	double array with the data
[out]	data	double array to be filled
[in]	buffer_idxlist	integer array with the information to fill the data array
[in]	buffer_size	size of the buffer to unpack (it can be a subset of the buffer array)
[in]	offset	buffer offset to start the unpacking of the buffer array
[in]	transform	array of indices to transform the memory layout

unpack_cuda_float()

void unpack_cuda_float	(	float *	buffer,
		float *	data,
		int *	buffer_idxlist,
		int	buffer_size,
		int	offset,
		int *	transform
	)

Unpacking function for float arrays.

Unpack beffer into array data using the buffer_idxlist

Parameters

[in]	buffer	float array with the data
[out]	data	float array to be filled
[in]	buffer_idxlist	integer array with the information to fill the data array
[in]	buffer_size	size of the buffer to unpack (it can be a subset of the buffer array)
[in]	offset	buffer offset to start the unpacking of the buffer array
[in]	transform	array of indices to transform the memory layout

unpack_cuda_int()

void unpack_cuda_int	(	int *	buffer,
		int *	data,
		int *	buffer_idxlist,
		int	buffer_size,
		int	offset,
		int *	transform
	)

Unpacking function for int arrays.

Unpack beffer into array data using the buffer_idxlist

Parameters

[in]	buffer	integer array with the data
[out]	data	integer array to be filled
[in]	buffer_idxlist	integer array with the information to fill the data array
[in]	buffer_size	size of the buffer to unpack (it can be a subset of the buffer array)
[in]	offset	buffer offset to start the unpacking of the buffer array
[in]	transform	array of indices to transform the memory layout