The SYCL device class encapsulates a single SYCL device on which kernels may be executed. More...

#include <CL/sycl/device.hpp>

Public Member Functions
	device ()
	Constructs a SYCL device instance as a host device. More...

	device (const device_selector &DeviceSelector)
	Constructs a SYCL device instance from an OpenCL cl_device_id in accordance with the requirements described in 4.3.1. More...

bool	operator== (const device &rhs) const

bool	operator!= (const device &rhs) const

	device (const device &rhs)=default

	device (device &&rhs)=default

device &	operator= (const device &rhs)=default

device &	operator= (device &&rhs)=default

bool	is_host () const
	Get instance of device. More...

bool	is_cpu () const
	Check if device is a CPU device. More...

bool	is_gpu () const
	Check if device is a GPU device. More...

bool	is_accelerator () const
	Check if device is an accelerator device. More...

platform	get_platform () const
	Get associated SYCL platform. More...

template<info::partition_property prop>
std::vector< device >	create_sub_devices (size_t ComputeUnits) const
	Partition device into sub devices. More...

template<info::partition_property prop>
std::vector< device >	create_sub_devices (const std::vector< size_t > &Counts) const
	Partition device into sub devices. More...

template<info::partition_property prop>
std::vector< device >	create_sub_devices (info::partition_affinity_domain AffinityDomain) const
	Partition device into sub devices. More...

template<info::device param>
info::param_traits< info::device, param >::return_type	get_info () const
	Queries this SYCL device for information requested by the template parameter param. More...

bool	has_extension (const std::string &extension_name) const
	Check SYCL extension support by device. More...

backend	get_backend () const noexcept
	Returns the backend associated with this device. More...

template<backend Backend>
backend_return_t< Backend, device >	get_native () const
	Gets the native handle of the SYCL device. More...

bool	has (aspect Aspect) const
	Indicates if the SYCL device has the given feature. More...

Static Public Member Functions
static std::vector< device >	get_devices (info::device_type deviceType=info::device_type::all)
	Query available SYCL devices. More...

Friends
template<class T >
detail::add_pointer_t< typename decltype(T::impl)::element_type >	detail::getRawSyclObjImpl (const T &SyclObject)

template<class T >
T	detail::createSyclObjFromImpl (decltype(T::impl) ImplObj)

auto	detail::getDeviceComparisonLambda ()

Detailed Description

The SYCL device class encapsulates a single SYCL device on which kernels may be executed.

Definition at line 36 of file device.hpp.

Constructor & Destructor Documentation

◆ device() [1/4]

cl::sycl::device::device ( )

Constructs a SYCL device instance as a host device.

Definition at line 32 of file device.cpp.

◆ device() [2/4]

cl::sycl::device::device ( const device_selector & DeviceSelector )

explicit

Constructs a SYCL device instance from an OpenCL cl_device_id in accordance with the requirements described in 4.3.1.

Parameters

DeviceId	is OpenCL device represented with cl_device_id Constructs a SYCL device instance using the device selected by the DeviceSelector provided.
DeviceSelector	SYCL device selector to be used (see 4.6.1.1).

Definition at line 47 of file device.cpp.

References cl::sycl::device_selector::select_device().

◆ device() [3/4]

cl::sycl::device::device ( const device & rhs )

default

◆ device() [4/4]

cl::sycl::device::device ( device && rhs )

default

Member Function Documentation

◆ create_sub_devices() [1/3]

template<info::partition_property prop>

std::vector< device > cl::sycl::device::create_sub_devices ( const std::vector< size_t > & Counts ) const

Partition device into sub devices.

Available only when prop is info::partition_property::partition_by_counts. If this SYCL device does not support info::partition_property::partition_by_counts a feature_not_supported exception must be thrown.

Parameters

Counts is a std::vector of desired compute units in sub devices.

Returns: a std::vector of sub devices partitioned from this SYCL device by count sizes based on the Counts parameter.

Definition at line 123 of file device.cpp.

◆ create_sub_devices() [2/3]

template<info::partition_property prop>

std::vector< device > cl::sycl::device::create_sub_devices ( info::partition_affinity_domain AffinityDomain ) const

Partition device into sub devices.

Available only when prop is info::partition_property::partition_by_affinity_domain. If this SYCL device does not support info::partition_property::partition_by_affinity_domain or the SYCL device does not support info::affinity_domain provided a feature_not_supported exception must be thrown.

Parameters

AffinityDomain is one of the values described in Table 4.20 of SYCL Spec

Returns: a vector class of sub devices partitioned from this SYCL device by affinity domain based on the AffinityDomain parameter

Definition at line 132 of file device.cpp.

◆ create_sub_devices() [3/3]

template<info::partition_property prop>

std::vector< device > cl::sycl::device::create_sub_devices ( size_t ComputeUnits ) const

Partition device into sub devices.

Available only when prop is info::partition_property::partition_equally. If this SYCL device does not support info::partition_property::partition_equally a feature_not_supported exception must be thrown.

Parameters

ComputeUnits is a desired count of compute units in each sub device.

Returns: A vector class of sub devices partitioned from this SYCL device equally based on the ComputeUnits parameter.

Definition at line 113 of file device.cpp.

◆ get_backend()

backend cl::sycl::device::get_backend ( ) const

noexcept

Returns the backend associated with this device.

Returns: the backend associated with this device.

Definition at line 159 of file device.cpp.

References cl::sycl::detail::getImplBackend().

◆ get_devices()

std::vector< device > cl::sycl::device::get_devices ( info::device_type deviceType = info::device_type::all )

static

Query available SYCL devices.

The returned std::vector must contain a single SYCL device that is a host device, permitted by the deviceType parameter

Parameters

deviceType is one of the values described in A.3 of SYCL Spec

Returns: a std::vector containing all SYCL devices available in the system of the device type specified

Definition at line 51 of file device.cpp.

References cl::sycl::info::all, cl::sycl::detail::device_filter_list::backendCompatible(), cl::sycl::detail::device_filter_list::containsHost(), cl::sycl::detail::force_type(), cl::sycl::detail::SYCLConfig< Config >::get(), cl::sycl::detail::get_forced_type(), cl::sycl::platform::get_platforms(), cl::sycl::info::host, and cl::sycl::detail::match_types().

Referenced by cl::sycl::ext::oneapi::detail::filter_selector_impl::filter_selector_impl().

◆ get_info()

template<info::device param>

info::param_traits< info::device, param >::return_type cl::sycl::device::get_info

Queries this SYCL device for information requested by the template parameter param.

Specializations of info::param_traits must be defined in accordance with the info parameters in Table 4.20 of SYCL Spec to facilitate returning the type associated with the param parameter.

Returns: device info of type described in Table 4.20.

Definition at line 147 of file device.cpp.

Referenced by cl::sycl::ext::oneapi::detail::filter_selector_impl::operator()(), cl::sycl::default_selector::operator()(), cl::sycl::ext::oneapi::detail::reduGetMaxNumConcurrentWorkGroups(), cl::sycl::ext::oneapi::detail::reduGetMaxWGSize(), and cl::sycl::device_selector::select_device().

◆ get_native()

template<backend Backend>

backend_return_t<Backend, device> cl::sycl::device::get_native ( ) const

inline

Gets the native handle of the SYCL device.

Returns: a native handle, the type of which defined by the backend.

Definition at line 192 of file device.hpp.

◆ get_platform()

platform cl::sycl::device::get_platform ( ) const

Get associated SYCL platform.

If this SYCL device is an OpenCL device then the SYCL platform must encapsulate the OpenCL cl_plaform_id associated with the underlying OpenCL cl_device_id of this SYCL device. If this SYCL device is a host device then the SYCL platform must be a host platform. The value returned must be equal to that returned by get_info<info::device::platform>().

Returns: The associated SYCL platform.

Definition at line 110 of file device.cpp.

Referenced by cl::sycl::context::context(), cl::sycl::ext::intel::platform_selector::operator()(), and cl::sycl::platform::platform().

◆ has()

bool cl::sycl::device::has ( aspect Aspect ) const

Indicates if the SYCL device has the given feature.

Parameters

Aspect is one of the values in Table 4.20 of the SYCL 2020 Provisional Spec.

Returns: true if the SYCL device has the given feature.

Definition at line 163 of file device.cpp.

Referenced by cl::sycl::handler::parallel_for().

◆ has_extension()

bool cl::sycl::device::has_extension ( const std::string & extension_name ) const

Check SYCL extension support by device.

Parameters

extension_name is a name of queried extension.

Returns: true if SYCL device supports the extension.

Definition at line 141 of file device.cpp.

◆ is_accelerator()

bool cl::sycl::device::is_accelerator ( ) const

Check if device is an accelerator device.

Returns: true if SYCL device is an accelerator device

Definition at line 108 of file device.cpp.

Referenced by cl::sycl::default_selector::operator()(), and cl::sycl::accelerator_selector::operator()().

◆ is_cpu()

bool cl::sycl::device::is_cpu ( ) const

Check if device is a CPU device.

Returns: true if SYCL device is a CPU device

Definition at line 104 of file device.cpp.

Referenced by cl::sycl::default_selector::operator()(), and cl::sycl::cpu_selector::operator()().

◆ is_gpu()

bool cl::sycl::device::is_gpu ( ) const

Check if device is a GPU device.

Returns: true if SYCL device is a GPU device

Definition at line 106 of file device.cpp.

Referenced by cl::sycl::default_selector::operator()(), cl::sycl::gpu_selector::operator()(), and cl::sycl::ext::oneapi::detail::reduGetMaxNumConcurrentWorkGroups().

◆ is_host()

bool cl::sycl::device::is_host ( ) const

Get instance of device.

Returns: a valid cl_device_id instance in accordance with the requirements described in 4.3.1. Check if device is a host device; true if SYCL device is a host device

Definition at line 102 of file device.cpp.

Referenced by cl::sycl::ext::oneapi::detail::filter_selector_impl::operator()(), cl::sycl::default_selector::operator()(), and cl::sycl::host_selector::operator()().

◆ operator!=()

bool cl::sycl::device::operator!= ( const device & rhs ) const

inline

Definition at line 57 of file device.hpp.

◆ operator=() [1/2]

device& cl::sycl::device::operator= ( const device & rhs )

default

◆ operator=() [2/2]

device& cl::sycl::device::operator= ( device && rhs )

default

◆ operator==()

bool cl::sycl::device::operator== ( const device & rhs ) const

inline

Definition at line 55 of file device.hpp.

Friends And Related Function Documentation

◆ detail::createSyclObjFromImpl

template<class T >

T detail::createSyclObjFromImpl ( decltype(T::impl) ImplObj )

friend

◆ detail::getDeviceComparisonLambda

auto detail::getDeviceComparisonLambda ( )

friend

◆ detail::getRawSyclObjImpl

template<class T >

detail::add_pointer_t<typename decltype(T::impl)::element_type> detail::getRawSyclObjImpl ( const T & SyclObject )

friend

The documentation for this class was generated from the following files:

include/CL/sycl/device.hpp
source/device.cpp

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ device() [1/4]

◆ device() [2/4]

◆ device() [3/4]

◆ device() [4/4]

Member Function Documentation

◆ create_sub_devices() [1/3]

◆ create_sub_devices() [2/3]

◆ create_sub_devices() [3/3]

◆ get_backend()

◆ get_devices()

◆ get_info()

◆ get_native()

◆ get_platform()

◆ has()

◆ has_extension()

◆ is_accelerator()

◆ is_cpu()

◆ is_gpu()

◆ is_host()

◆ operator!=()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator==()

Friends And Related Function Documentation

◆ detail::createSyclObjFromImpl

◆ detail::getDeviceComparisonLambda

◆ detail::getRawSyclObjImpl