Bit-sliced pairwise counts of one 32-bucket group, accumulated per lane. More...

Public Member Functions
template<size_t BucketCount, bool ReferenceFull = false>
__device__ pairwise_counts	reduce () const noexcept
	Warp-reduces the counts into an exact pairwise summary.

Public Attributes
uint32_t	lower {}

uint32_t	differ {}
	Buckets whose scores differ.

uint32_t	occupied {}
	Buckets whose scores differ or whose reference score is nonzero: all but both-empty.

uint32_t	matches {}

Detailed Description

Bit-sliced pairwise counts of one 32-bucket group, accumulated per lane.

Differing and occupied buckets are counted rather than their equal and empty complements, so no complement is computed per plane group; the reduction recovers the complements.

Definition at line 1395 of file kernels.cuh.

Member Function Documentation

◆ reduce()

template<size_t BucketCount, bool ReferenceFull = false>

__device__ pairwise_counts cuddl::detail::plane_counts::reduce ( ) const

inlinenoexcept

Warp-reduces the counts into an exact pairwise summary.

Definition at line 1405 of file kernels.cuh.

                                                                     {
        auto const total_lower = __reduce_add_sync(0xffffffffU, lower);
        auto const total_differ = __reduce_add_sync(0xffffffffU, differ);
        auto const total_occupied = ReferenceFull ? static_cast<uint32_t>(BucketCount)
                                                  : __reduce_add_sync(0xffffffffU, occupied);
        return {
            .lower = total_lower,
            .equal = total_occupied - total_differ,
            .higher = total_differ - total_lower,
            .both_empty = static_cast<uint32_t>(BucketCount) - total_occupied,
        };
    }

Member Data Documentation

◆ differ

uint32_t cuddl::detail::plane_counts::differ {}

Buckets whose scores differ.

Definition at line 1398 of file kernels.cuh.

1398{};

◆ lower

uint32_t cuddl::detail::plane_counts::lower {}

Definition at line 1396 of file kernels.cuh.

1396{};

◆ matches

uint32_t cuddl::detail::plane_counts::matches {}

Definition at line 1401 of file kernels.cuh.

1401{};

◆ occupied

uint32_t cuddl::detail::plane_counts::occupied {}

Buckets whose scores differ or whose reference score is nonzero: all but both-empty.

Definition at line 1400 of file kernels.cuh.

1400{};

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

kernels.cuh

Public Member Functions

Public Attributes