Multi-dimensional Data

2025-10-17

2 min read time

Applies to Linux

This page provides C++ class references for the RAFT’s 1d span and multi-dimension owning (mdarray) and non-owning (mdspan) APIs. These headers can be found in the raft/core directory.

Contents:

• Multi-dimensional Representation
  • Data Layouts
  • Shapes
  • Accessors
• mdspan: Multi-dimensional Non-owning View
  • mdspan
  • make_mdspan()
  • make_extents()
  • make_strided_layout()
  • unravel_index()
  • is_c_contiguous()
  • is_f_contiguous()
  • make_const_mdspan()
  • Device Vocabulary
  • Device Factories
  • Managed Vocabulary
  • Managed Factories
  • Host Vocabulary
  • Host Factories
  • Pinned Vocabulary
  • Pinned Factories
  • Validation Routines
• mdarray: Multi-dimensional Owning Container
  • is_array_interface_v
  • raft::array_interface
  • raft::is_array_interface
  • raft::is_array_interface< T1 >
  • raft::is_array_interface< T1, Tn... >
  • raft::mdarray
  • Device Vocabulary
  • Device Factories
  • Host Vocabulary
  • Host Factories
  • Managed Vocabulary
  • Managed Factories
  • Pinned Vocabulary
  • Pinned Factories
• span: One-dimensional Non-owning View
  • element_type
  • value_type
  • size_type
  • difference_type
  • pointer
  • const_pointer
  • reference
  • const_reference
  • iterator
  • const_iterator
  • reverse_iterator
  • const_reverse_iterator
  • span()
  • span()
  • span()
  • span()
  • span()
  • span()
  • span()
  • operator=()
  • operator=()
  • begin()
  • end()
  • cbegin()
  • cend()
  • rbegin()
  • rend()
  • crbegin()
  • crend()
  • front()
  • back()
  • operator[]()
  • data()
  • size()
  • size_bytes()
  • empty()
  • first()
  • first()
  • last()
  • last()
  • subspan()
  • subspan()
  • operator==()
  • operator!=()
  • operator<()
  • operator<=()
  • operator>()
  • operator>=()
  • as_bytes()
  • as_writable_bytes()
  • raft::span
  • device_span
  • host_span
• mdbuffer: Multi-dimensional Maybe-Owning Container
  • alternate_from_mem_type
  • default_container_policy_variant
  • is_mdbuffer_t
  • is_input_mdbuffer_t
  • is_output_mdbuffer_t
  • enable_if_mdbuffer
  • enable_if_input_mdbuffer
  • enable_if_output_mdbuffer
  • is_mdbuffer_v
  • is_input_mdbuffer_v
  • is_output_mdbuffer_v
  • variant_index_from_memory_type()
  • memory_type_from_variant_index()
  • __takes_an_mdbuffer_ptr()
  • raft::default_buffer_container_policy
  • raft::mdbuffer
  • raft::is_mdbuffer
  • raft::is_mdbuffer< T, std::void_t< decltype(__takes_an_mdbuffer_ptr(std::declval< T * >()))> >
  • raft::is_input_mdbuffer
  • raft::is_input_mdbuffer< T, std::void_t< decltype(__takes_an_mdbuffer_ptr(std::declval< T * >()))> >
  • raft::is_output_mdbuffer
  • raft::is_output_mdbuffer< T, std::void_t< decltype(__takes_an_mdbuffer_ptr(std::declval< T * >()))> >
• memory_type_dispatcher
  • memory_type_dispatcher()
  • memory_type_dispatcher()
  • memory_type_dispatcher()
• temporary_device_buffer: Temporary raft::device_mdspan Producing Object
  • raft::temporary_device_buffer
  • Factories