BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH > Class Template Reference

• hipcub
• BlockShuffle

Public Types | Public Member Functions | List of all members

hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH > Class Template Reference

Inheritance diagram for hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >:

Public Types
using	TempStorage = typename base_type::storage_type

Public Member Functions
__device__	BlockShuffle (TempStorage &temp_storage)
__device__ void	Offset (T input, T &output, int distance=1)
	Each threadi obtains the input provided by threadi+distance. The offset distance may be negative. More...
__device__ void	Rotate (T input, T &output, unsigned int distance=1)
	Each threadi obtains the input provided by threadi+distance. More...
template<int ITEMS_PER_THREAD>
__device__ void	Up (T(&input)[ITEMS_PER_THREAD], T(&prev)[ITEMS_PER_THREAD])
	The thread block rotates its blocked arrangement of input items, shifting it up by one item. More...
template<int ITEMS_PER_THREAD>
__device__ void	Up (T(&input)[ITEMS_PER_THREAD], T(&prev)[ITEMS_PER_THREAD], T &block_suffix)
	The thread block rotates its blocked arrangement of input items, shifting it up by one item. All threads receive the input provided by threadBLOCK_THREADS-1. More...
template<int ITEMS_PER_THREAD>
__device__ void	Down (T(&input)[ITEMS_PER_THREAD], T(&next)[ITEMS_PER_THREAD])
	The thread block rotates its blocked arrangement of input items, shifting it down by one item. More...
template<int ITEMS_PER_THREAD>
__device__ void	Down (T(&input)[ITEMS_PER_THREAD], T(&next)[ITEMS_PER_THREAD], T &block_prefix)
	The thread block rotates its blocked arrangement of input items, shifting it down by one item. All threads receive input[0] provided by thread0. More...

Constructor & Destructor Documentation

◆ BlockShuffle()

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

__device__ hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::BlockShuffle ( TempStorage &  temp_storage )

inline

Parameters

[in]

temp_storage

Reference to memory allocation having layout type TempStorage

Member Function Documentation

◆ Offset()

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

__device__ void hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::Offset ( T  input, T &  output, int  distance = 1  )

inline

Each thread_i obtains the input provided by thread_i+distance. The offset distance may be negative.

• \smemreuse

Parameters

[in]	input	The input item from the calling thread (threadi)
[out]	output	The input item from the successor (or predecessor) thread threadi+distance (may be aliased to input). This value is only updated for for threadi when 0 <= (i + distance) < BLOCK_THREADS-1
[in]	distance	Offset distance (may be negative)

◆ Rotate()

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

__device__ void hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::Rotate ( T  input, T &  output, unsigned int  distance = 1  )

inline

Each thread_i obtains the input provided by thread_i+distance.

• \smemreuse

Parameters

[in]	input	The calling thread's input item
[out]	output	The input item from thread thread(i+distance>)%<BLOCK_THREADS> (may be aliased to input). This value is not updated for threadBLOCK_THREADS-1
[in]	distance	Offset distance (0 < distance < BLOCK_THREADS)

◆ Up() [1/2]

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

template<int ITEMS_PER_THREAD>

__device__ void hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::Up ( T(&)  input[ITEMS_PER_THREAD], T(&)  prev[ITEMS_PER_THREAD]  )

inline

The thread block rotates its blocked arrangement of input items, shifting it up by one item.

• \blocked
• \granularity
• \smemreuse

Parameters

[in]	input	The calling thread's input items
[out]	prev	The corresponding predecessor items (may be aliased to input). The item prev[0] is not updated for thread0.

◆ Up() [2/2]

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

template<int ITEMS_PER_THREAD>

__device__ void hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::Up ( T(&)  input[ITEMS_PER_THREAD], T(&)  prev[ITEMS_PER_THREAD], T &  block_suffix  )

inline

The thread block rotates its blocked arrangement of input items, shifting it up by one item. All threads receive the input provided by thread_{BLOCK_THREADS-1}.

• \blocked
• \granularity
• \smemreuse

Parameters

[in]	input	The calling thread's input items
[out]	prev	The corresponding predecessor items (may be aliased to input). The item prev[0] is not updated for thread0.
[out]	block_suffix	The item input[ITEMS_PER_THREAD-1] from threadBLOCK_THREADS-1, provided to all threads

◆ Down() [1/2]

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

template<int ITEMS_PER_THREAD>

__device__ void hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::Down ( T(&)  input[ITEMS_PER_THREAD], T(&)  next[ITEMS_PER_THREAD]  )

inline

The thread block rotates its blocked arrangement of input items, shifting it down by one item.

• \blocked
• \granularity
• \smemreuse

Parameters

[in]	input	The calling thread's input items
[out]	next	The corresponding predecessor items (may be aliased to input). The value next[0] is not updated for threadBLOCK_THREADS-1.

◆ Down() [2/2]

template<typename T , int BLOCK_DIM_X, int BLOCK_DIM_Y = 1, int BLOCK_DIM_Z = 1, int ARCH = 1>

template<int ITEMS_PER_THREAD>

__device__ void hipcub::BlockShuffle< T, BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z, ARCH >::Down ( T(&)  input[ITEMS_PER_THREAD], T(&)  next[ITEMS_PER_THREAD], T &  block_prefix  )

inline

The thread block rotates its blocked arrangement of input items, shifting it down by one item. All threads receive input[0] provided by thread₀.

• \blocked
• \granularity
• \smemreuse

Parameters

[in]	input	The calling thread's input items
[out]	next	The corresponding predecessor items (may be aliased to input). The value next[0] is not updated for threadBLOCK_THREADS-1.
[out]	block_prefix	The item input[0] from thread0, provided to all threads

---

The documentation for this class was generated from the following file:

• /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-hipcub/checkouts/docs-5.4.3/hipcub/include/hipcub/backend/rocprim/block/block_shuffle.hpp