Reduce

Reduce#

group thread_reduce

Functions

template<int Length, typename T, typename ReductionOp, typename Prefix = std::monostate>
__device__ inline auto thread_reduce(T *input, ReductionOp reduction_op, Prefix prefix = {})#

Carry out a reduction on an array of elements in one thread.

Template Parameters:

  • Length – Length of the array to be reduced

  • T – the input/output type

  • ReductionOp – Binary Operation that used to carry out the reduction

Parameters:

  • input – [in] Pointer to the first element of the array to be reduced

  • reduction_op – [in] Instance of the reduction operator functor

  • prefix – [in] Optional value to be used as prefix

Returns:

Value obtained from reduction of input array

template<int Length, typename T, typename ReductionOp, typename Prefix = std::monostate>
__device__ inline T thread_reduce(T (&input)[Length], ReductionOp reduction_op, Prefix prefix = {})#

Carry out a reduction on an array of elements in one thread.

Template Parameters:

  • Length – Length of the array to be reduced

  • T – the input/output type

  • ReductionOp – Binary Operation that used to carry out the reduction

Parameters:

  • input – [in] Pointer to the first element of the array to be reduced

  • reduction_op – [in] Instance of the reduction operator functor

  • prefix – [in] Optional value to be used as prefix

Returns:

Value obtained from reduction of input array

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