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38 lines
1.8 KiB
Plaintext
38 lines
1.8 KiB
Plaintext
/**
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@brief rocPRIM Glossary
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@author
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@file
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*/
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/**
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* \defgroup rocprim_glossary rocPRIM Glossary
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* @{
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* This glossary is to help users understand the basic concepts or terminologies used in the rocPRIM library.
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*
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* @page rocprim_glossary_page Terminologies
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*
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* * \par Warp
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* Refers to a group of threads that execute in SIMT (Single Instruction, Multiple Thread) fashion. Also known as \n
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* wavefronts on AMD GPUs.
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* * \par Hardware Warp Size
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* Refers to the number of threads in a warp defined by the hardware. On Nvidia GPUs, a warp size is 32, \n
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* while on AMD GPUs, a warp size is 64.
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* * \par Logical Warp Size
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* Refers to the number of threads in a warp defined by the user, which can be equal to or less than \n
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* the size of the hardware warp size.
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* * \par Lane ID
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* Refers to the thread identifier within the warp. A logical lane ID refers to the thread identifier in a \n "logical
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* warp", which can be smaller than a hardware warp size (And can be defined as `lane_id() % WarpSize`).
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* * \par Warp ID
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* Refers to the identifier of the hardware/logical warp in a block. Warp ID is guaranteed to be unique among warps.
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* * \par Block
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* Refers to a group of threads that are executed on the same compute unit (streaming multiprocessor). These threads can \n
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* be indexed using 1 Dimension {X}, 2 Dimensions {X, Y} or 3 Dimensions {X, Y, Z}. A block consists of multiple warps.
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* * \par Tile
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* Refers to a block, but in the C++AMP nomenclature.
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* * \par Flat ID
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* Refers to a flattened identifier of a block (tile) or a thread identifier. Flat ID is a 1D value created from 2D or 3D \n
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* identifier. Example: flat id of thread id (X, Y) in 2D thread block 128x4 (XxY) is Y * 128 + X.
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*
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* @}
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*/ |