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Glossary
Accelerator
Specialized component containing compute resources that can quickly execute a subset of operations. Examples include CPU, FPGA, GPU.
See also: Device
Accessor
Communicates the desired location (host, device) and mode (read, write) of access.
Application Scope
Code that executes on the host.
Buffers
Memory object that communicates the type and number of items of that type to be communicated to the device for computation.
Command Group Scope
Code that acts as the interface between the host and device.
Command Queue
Issues command groups concurrently.
Compute Unit
A grouping of processing elements into a ‘core’ that contains shared elements for use between the processing elements and with faster access than memory residing on other compute units on the device.
Device
An accelerator or specialized component containing compute resources that can quickly execute a subset of operations. A CPU can be employed as a device, but when it is, it is being employed as an accelerator. Examples include CPU, FPGA, GPU.
See also: Accelerator
Device Code
Code that executes on the device rather than the host. Device code is specified via lambda expression, functor, or kernel class.
DPC++
An open source project is adding SYCL* support to the LLVM C++ compiler.
Fat Binary
Application binary that contains device code for multiple devices. The binary includes both the generic code (SPIR-V representation) and target specific executable code.
Fat Library
Archive or library of object code that contains object code for multiple devices. The fat library includes both the generic object (SPIR-V representation) and target specific object code.
Fat Object
File that contains object code for multiple devices. The fat object includes both the generic object (SPIR-V representation) and target specific object code.
Host
A CPU-based system (computer) that executes the primary portion of a program, specifically the application scope and command group scope.
Host Code
Code that is compiled by the host compiler and executes on the host rather than the device.
Images
Formatted opaque memory object that is accessed via built-in function. Typically pertains to pictures comprised of pixels stored in format like RGB.
Kernel Scope
Code that executes on the device.
ND-range
Short for N-Dimensional Range, a group of kernel instances, or work item, across one, two, or three dimensions.
Processing Element
Individual engine for computation that makes up a compute unit.
Single Source
Code in the same file that can execute on a host and accelerator(s).
SPIR-V
Binary intermediate language for representing graphical-shader stages and compute kernels.
SYCL
A standard for a cross-platform abstraction layer that enables code for heterogeneous processors to be written using standard ISO C++ with the host and kernel code for an application contained in the same source file.
Work-groups
Collection of work-items that execute on a compute unit.
Work-item
Basic unit of computation in the oneAPI programming model. It is associated with a kernel which executes on the processing element.