cub/device/device_copy.cuh
File members: cub/device/device_copy.cuh
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#pragma once
#include <cub/config.cuh>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <cub/detail/nvtx.cuh>
#include <cub/device/dispatch/dispatch_batch_memcpy.cuh>
#include <thrust/system/cuda/detail/core/triple_chevron_launch.h>
#include <cstdint>
CUB_NAMESPACE_BEGIN
struct DeviceCopy
{
template <typename InputIt, typename OutputIt, typename SizeIteratorT>
CUB_RUNTIME_FUNCTION static cudaError_t Batched(
void* d_temp_storage,
size_t& temp_storage_bytes,
InputIt input_it,
OutputIt output_it,
SizeIteratorT sizes,
uint32_t num_ranges,
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DeviceCopy::Batched");
// Integer type large enough to hold any offset in [0, num_ranges)
using RangeOffsetT = uint32_t;
// Integer type large enough to hold any offset in [0, num_thread_blocks_launched), where a safe
// uppper bound on num_thread_blocks_launched can be assumed to be given by
// IDIV_CEIL(num_ranges, 64)
using BlockOffsetT = uint32_t;
return detail::DispatchBatchMemcpy<
InputIt,
OutputIt,
SizeIteratorT,
RangeOffsetT,
BlockOffsetT,
detail::DeviceBatchMemcpyPolicy<RangeOffsetT, BlockOffsetT>,
false>::Dispatch(d_temp_storage, temp_storage_bytes, input_it, output_it, sizes, num_ranges, stream);
}
};
CUB_NAMESPACE_END