oneAPI Specification Logo
1.0
  • Introduction
    • Target Audience
    • Goals of the Specification
    • Definitions
    • Contribution Guidelines
      • Sign your work
  • Software Architecture
    • oneAPI Platform
    • API Programming Example
    • Direct Programming Example
  • Library Interoperability
    • Queueing
    • API Arguments
    • Asynchronous APIs
    • Exceptions
  • oneAPI Elements
  • DPC++
    • Overview
    • Detailed API and Language Descriptions
    • Open Source Implementation
    • Testing
    • Acknowledgment
  • oneDPL
    • Namespaces
    • Supported C++ Standard Library APIs and Algorithms
    • Extensions to Parallel STL
      • DPC++ Execution Policy
        • device_policy class
        • make_device_policy function
      • Buffer wrappers
    • Specific API of oneDPL
      • Function Objects
      • Iterators
      • Parallel Algorithms
  • oneDNN
    • Introduction
      • General API notes
      • Error Handling
      • Namespaces
    • Conventions
      • Variable (Tensor) Names
      • RNN-Specific Notation
    • Execution Model
      • Engine
      • Stream
    • Data model
      • Data types
        • Bfloat16
        • Int8
      • Memory
        • Memory Formats
        • Memory Descriptors and Objects
    • Primitives
      • Common Definitions
        • Base Class for Primitives
        • Base Class for Primitives Descriptors
        • Common Enumerations
        • Normalization Primitives Flags
        • Execution argument indices
      • Attributes
        • Post-ops
        • Scratchpad Mode
        • Quantization
        • Attribute Related Error Handling
        • API
      • Batch Normalization
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Representation
        • Post-ops and Attributes
        • API
      • Binary
        • Forward and Backward
        • Execution Arguments
        • Operation Details
        • Post-ops and Attributes
        • Data Types Support
        • Data Representation
        • API
      • Concat
        • Forward and Backward
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Representation
        • Post-ops and Attributes
        • API
      • Convolution and Deconvolution
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Representation
        • Post-ops and Attributes
        • Algorithms
        • API
      • Elementwise
        • Forward
        • Backward
        • Difference Between Forward Training and Forward Inference
        • Execution Arguments
        • Operation Details
        • Data Type Support
        • Data Representation
        • Post-ops and Attributes
        • API
      • Inner Product
        • Forward
        • Backward
        • Operation Details
        • Data Types Support
        • Data Representation
        • Post-ops and Attributes
        • API
      • Layer normalization
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Representation
        • API
      • LogSoftmax
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Post-ops and Attributes
        • Data Type Support
        • Data Representation
        • API
      • Local Response Normalization
        • Forward
        • Backward
      • Matrix Multiplication
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Representation
        • Attributes and Post-ops
        • API
      • Pooling
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Data Type Support
        • Data Representation
        • Post-ops and Attributes
        • API
      • Reorder
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Representation
        • Post-ops and Attributes
        • API
      • Resampling
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Post-ops and Attributes
        • API
      • RNN
        • Cell Functions
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • API
      • Shuffle
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Data Types Support
        • Data Layouts
        • Post-ops and Attributes
        • API
      • Softmax
        • Forward
        • Backward
        • Execution Arguments
        • Operation Details
        • Post-ops and Attributes
        • Data Types Support
        • Data Representation
        • API
      • Sum
        • Execution Arguments
        • Operation Details
        • Post-ops and Attributes
        • Data Types Support
        • Data Representation
        • API
    • Open Source Implementation
    • Implementation Notes
    • Testing
  • oneCCL
    • Introduction
    • Definitions
      • oneCCL Concepts
        • Environment
        • Key-Value Store
        • Communicator
        • Device Communicator
        • Request
        • Event
        • Stream
        • Operation Attributes
      • Communication Operations
        • Datatypes
        • Reductions
        • Collective Operations
        • Operation Attributes
        • Operation Progress Tracking
      • Error Handling
    • Programming Model
      • Generic Workflow
      • Host Communication Support
        • Example
      • Device Communication Support
        • Example
  • Level Zero
    • Detailed API Descriptions
  • oneDAL
    • Introduction
    • Glossary
      • Machine learning terms
      • oneDAL terms
      • Common oneAPI terms
    • Mathematical Notations
    • Programming model
      • End-to-end example
      • Descriptors
        • Floating-point Types
        • Computational Methods
        • Computational Tasks
      • Operations
        • General operation definition
        • Operation shortcuts
        • Input
        • Result
        • Supported operation
      • Computational modes
        • Batch
        • Online
        • Distributed
    • Common Interface
      • Current Version of this oneDAL Specification
      • Header files
      • Namespaces
      • Error handling
        • Exception classification
      • Common type definitions
        • Programming interface
    • Data management
      • Key concepts
        • Dataset
        • Data source
        • Table
        • Table metadata
        • Accessor
        • Example of interaction between table and accessor objects
      • Details
        • Array
        • Accessors
        • Data Sources
        • Tables
    • Algorithms
      • Clustering
        • K-Means
        • K-Means initialization
      • Nearest Neighbors (kNN)
        • k-Nearest Neighbors Classification (k-NN)
      • Decomposition
        • Principal Components Analysis (PCA)
    • Appendix
      • k-d Tree
        • Related terms
    • Bibliography
  • oneTBB
    • General Information
      • Introduction
      • Notational Conventions
      • Identifiers
        • Case
        • Reserved Identifier Prefixes
      • Named Requirements
        • Algorithms
        • Mutexes
        • Containers
        • Task scheduler
        • Flow Graph
      • Thread Safety
    • oneTBB Interfaces
      • Configuration
        • Namespaces
        • Version Information
        • Enabling Debugging Features
        • Feature Macros
      • Algorithms
        • Parallel Functions
        • Blocked Ranges
        • Partitioners
        • Split Tags
      • Flow Graph
        • Graph Class
        • Nodes
        • Ports and Edges
        • Special Messages Types
        • Examples
      • Task Scheduler
        • Scheduling controls
        • Task Group
        • Task Arena
      • Containers
        • Sequences
        • Queues
        • Unordered associative containers
        • Ordered associative containers
        • Auxiliary classes
      • Thread Local Storage
        • combinable
        • enumerable_thread_specific
        • flattened2d
    • oneTBB Auxiliary Interfaces
      • Memory Allocation
        • Allocators
        • Memory Resources
        • Library Functions
      • Mutual Exclusion
        • Mutex Classes
      • Timing
        • Syntax
        • Classes
  • oneVPL
    • Architecture
    • Programming Guide
    • Mandatory APIs and Functions
      • Disclaimer
      • Exported Functions
      • Mandatory APIs
    • oneVPL API Reference
      • Function Reference
      • Structure Reference
      • Enumerator Reference
        • Angle
        • BitstreamDataFlag
        • BPSEIControl
        • BRCStatus
        • BRefControl
        • ChromaFormateIdc
        • ChromaSiting
        • CodecFormatFourCC
        • CodecLevel
        • CodecProfile
        • CodingOptionValue
        • ColorFourCC
        • ContentInfo
        • Corruption
        • DeinterlacingMode
        • ErrorTypes
        • ExtendedBufferID
        • ExtMemBufferType
        • ExtMemFrameType
        • Frame Data Flags
        • FrameType
        • FrcAlgm
        • GeneralConstraintFlags
        • GopOptFlag
        • GPUCopy
        • HEVC Profiles
        • HEVC Tiers
        • HEVCRegionEncoding
        • HEVCRegionType
        • ImageStabMode
        • InsertHDRPayload
        • InterpolationMode
        • IntraPredBlockSize/InterPredBlockSize
        • IntraRefreshTypes
        • IOPattern
        • JPEG Profiles
        • JPEGColorFormat
        • JPEGScanType
        • LongTermIdx
        • LookAheadDownSampling
        • MBQPMode
        • mfxComponentType
        • mfxHandleType
        • mfxIMPL
        • mfxImplCapsDeliveryFormat
        • mfxMediaAdapterType
        • mfxMemoryFlags
        • MfxNalUnitType
        • mfxPriority
        • mfxResourceType
        • mfxSkipMode
        • mfxStatus
        • MirroringType
        • MPEG-2 Profiles
        • Multi-view Video Coding Extension Profiles
        • MVPrecision
        • NominalRange
        • PartialBitstreamOutput
        • PayloadCtrlFlags
        • PicStruct
        • PicType
        • PlatformCodeName
        • PRefType
        • Protected
        • RateControlMethod
        • ROImode
        • Rotation
        • SampleAdaptiveOffset
        • ScalingMode
        • ScenarioInfo
        • SegmentFeature
        • SegmentIdBlockSize
        • SkipFrame
        • TargetUsage
        • TelecinePattern
        • TimeStampCalc
        • TransferMatrix
        • TrellisControl
        • VC-1 Profiles
        • VP8 Profiles
        • VP9 Profiles
        • VP9ReferenceFrame
        • VPPFieldProcessingMode
        • WeightedPred
      • Define Reference
        • API
      • Type Reference
        • Basic Types
        • Typedefs
      • Dispatcher API
        • Dispatcher API Function Reference
        • Dispatcher API Structure Reference
        • Dispatcher API Enumeration Reference
        • Dispatcher API Define Reference
    • oneVPL API Versioning
    • Appendices
      • oneVPL for Intel® Media Software Development Kit Users
        • oneVPL Ease of Use Enhancements
        • New APIs in oneVPL
        • Intel® Media Software Development Kit Feature Removals
        • Intel® Media Software Development Kit API Removals
      • Configuration Parameter Constraints
        • DECODE, ENCODE, and VPP Constraints
        • DECODE Constraints
        • ENCODE Constraints
        • VPP Constraints
        • Specifying Configuration Parameters
      • Multiple-segment Encoding
      • Streaming and Video Conferencing Features
        • Dynamic Bitrate Change
        • Dynamic Resolution Change
        • Dynamic Reference Frame Scaling
        • Forced Keyframe Generation
        • Reference List Selection
        • Low Latency Encoding and Decoding
        • Reference Picture Marking Repetition SEI Message
        • Long Term Reference Frame
        • Temporal Scalability
      • Switchable Graphics and Multiple Monitors
        • Switchable Graphics
        • Multiple Monitors
      • Working Directly with VA API for Linux*
      • CQP HRD Mode Encoding
    • Glossary
      • Acronyms and Terms
      • Video Formats
      • Color Formats
  • oneMKL
    • oneMKL Architecture
      • Execution Model
        • Use of Queues
        • Device Usage
        • Asynchronous Execution
        • Host Thread Safety
      • Memory Model
        • The Buffer Memory Model
        • Unified Shared Memory Model
      • API Design
        • oneMKL namespaces
        • Standard C++ datatype usage
        • DPC++ datatype usage
        • oneMKL defined datatypes
      • Exceptions and Error Handling
        • Exception classification
      • Other Features
        • Current Version of this oneMKL Specification
        • Pre/Post Condition Checking
    • oneMKL Domains
      • Dense Linear Algebra
      • Sparse Linear Algebra
      • Discrete Fourier Transforms
      • Random Number Generators
      • Summary Statistics
      • Vector Math
    • oneMKL Appendix
      • Future considerations
      • Acknowledgement
  • Contributors
  • HTML and PDF Versions
    • Release Notes
      • 1.0
      • 0.9
      • 0.85
      • 0.8
      • 0.7
      • 0.5
  • Legal Notices and Disclaimers
oneAPI Specification
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  • oneCCL
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Definitions¶

  • oneCCL Concepts
    • Environment
    • Key-Value Store
    • Communicator
    • Device Communicator
    • Request
    • Event
    • Stream
    • Operation Attributes
  • Communication Operations
    • Datatypes
      • Custom Datatypes
    • Reductions
    • Collective Operations
      • Allgatherv
      • Allreduce
      • Alltoall
      • Alltoallv
      • Barrier
      • Broadcast
      • Reduce
      • ReduceScatter
    • Operation Attributes
    • Operation Progress Tracking
      • Request
  • Error Handling
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