sobol64_engine< DefaultNumDimensions > Class Template Reference

sobol64_engine< DefaultNumDimensions > Class Template Reference#

API library: rocrand_cpp::sobol64_engine< DefaultNumDimensions > Class Template Reference

API library

rocrand_cpp
sobol64_engine

Sobol's quasi-random sequence generator. More...

#include <rocrand.hpp>

Public Types
typedef unsigned long long int	result_type

typedef unsigned long long int	offset_type

typedef rocrand_ordering	order_type

typedef unsigned int	dimensions_num_type

Public Member Functions
	sobol64_engine (dimensions_num_type num_of_dimensions=DefaultNumDimensions, offset_type offset_value=0, order_type order_value=ROCRAND_ORDERING_QUASI_DEFAULT)
	Constructs the pseudo-random number engine. More...

	sobol64_engine (rocrand_generator &generator)
	Constructs the pseudo-random number engine. More...

	sobol64_engine (const sobol64_engine &)=delete

sobol64_engine &	operator= (const sobol64_engine &)=delete

	sobol64_engine (sobol64_engine &&rhs) noexcept
	Move construct from an other engine, moving the state over. More...

sobol64_engine &	operator= (sobol64_engine &&rhs) noexcept
	Move assign from an other engine, moving the state over. More...

	~sobol64_engine () noexcept(false)

void	stream (hipStream_t value)
	Sets the random number engine's `hipStream` for kernel launches. More...

void	order (order_type value)
	Sets the order of a random number engine. More...

void	offset (offset_type value)
	Sets the offset of a random number engine. More...

void	dimensions (dimensions_num_type value)
	Set the number of dimensions of a quasi-random number generator. More...

template<class Generator >
void	operator() (result_type *output, size_t size)
	Fills `output` with uniformly distributed random integer values. More...

result_type	min () const
	Returns the smallest possible value that can be generated by the engine. More...

result_type	max () const
	Returns the largest possible value that can be generated by the engine. More...

Static Public Member Functions
static constexpr rocrand_rng_type	type ()
	Returns type of the rocRAND pseudo-random number generator associated with the engine. More...

Static Public Attributes
static constexpr dimensions_num_type	default_num_dimensions = DefaultNumDimensions
	The default number of dimenstions, equal to `DefaultNumDimensions`.

Detailed Description

template<unsigned int DefaultNumDimensions = 1>
class rocrand_cpp::sobol64_engine< DefaultNumDimensions >

Sobol's quasi-random sequence generator.

sobol64 is a quasi-random number engine which produces Sobol sequences. This implementation supports generating sequences in up to 20,000 dimensions. The engine produces random unsigned integers on the interval [0, 2^64 - 1].

Member Typedef Documentation

◆ dimensions_num_type

template<unsigned int DefaultNumDimensions = 1>

rocrand_cpp::sobol64_engine< DefaultNumDimensions >::dimensions_num_type

Quasi-random number engine type for number of dimensions.

◆ offset_type

template<unsigned int DefaultNumDimensions = 1>

typedef unsigned long long int rocrand_cpp::sobol64_engine< DefaultNumDimensions >::offset_type

Pseudo-random number engine offset type. Offset represents a number of the random number engine's states that should be skipped before first value is generated.

◆ order_type

template<unsigned int DefaultNumDimensions = 1>

typedef rocrand_ordering rocrand_cpp::sobol64_engine< DefaultNumDimensions >::order_type

Pseudo-random number engine ordering type. Represents the ordering of the results of a random number engine.

◆ result_type

template<unsigned int DefaultNumDimensions = 1>

typedef unsigned long long int rocrand_cpp::sobol64_engine< DefaultNumDimensions >::result_type

Type of values generated by the random number engine.

Constructor & Destructor Documentation

◆ sobol64_engine() [1/3]

template<unsigned int DefaultNumDimensions = 1>

rocrand_cpp::sobol64_engine< DefaultNumDimensions >::sobol64_engine	(	dimensions_num_type	num_of_dimensions = `DefaultNumDimensions`,
		offset_type	offset_value = `0`,
		order_type	order_value = `ROCRAND_ORDERING_QUASI_DEFAULT`
	)

inline

Constructs the pseudo-random number engine.

Parameters

num_of_dimensions	- number of dimensions to use in the initialization of the internal state, see also dimensions()
offset_value	- number of internal states that should be skipped, see also offset()
order_value	- ordering of the sequences generated by the engine, see also order()

◆ sobol64_engine() [2/3]

template<unsigned int DefaultNumDimensions = 1>

rocrand_cpp::sobol64_engine< DefaultNumDimensions >::sobol64_engine ( rocrand_generator & generator )

inlineexplicit

Constructs the pseudo-random number engine.

The pseudo-random number engine will be created using generator. The constructed engine take ownership over generator, and sets passed reference to NULL. The lifetime of generator is now bound to the lifetime of the engine.

Parameters

generator - rocRAND generator

◆ sobol64_engine() [3/3]

template<unsigned int DefaultNumDimensions = 1>

rocrand_cpp::sobol64_engine< DefaultNumDimensions >::sobol64_engine ( sobol64_engine< DefaultNumDimensions > && rhs )

inlinenoexcept

Move construct from an other engine, moving the state over.

Parameters

rhs	the engine to move-from

The moved-from engine is safe to assign to or destroy, but otherwise cannot be used.
This engine will continue the sequence generated by rhs.

◆ ~sobol64_engine()

template<unsigned int DefaultNumDimensions = 1>

rocrand_cpp::sobol64_engine< DefaultNumDimensions >::~sobol64_engine ( )

inlinenoexcept

Destructs the engine.

Member Function Documentation

◆ dimensions()

template<unsigned int DefaultNumDimensions = 1>

void rocrand_cpp::sobol64_engine< DefaultNumDimensions >::dimensions ( dimensions_num_type value )

inline

Set the number of dimensions of a quasi-random number generator.

Supported values of dimensions are 1 to 20000.

This operation resets the generator's internal state.
This operation does not change the generator's offset.

Parameters

value - Number of dimensions

◆ max()

template<unsigned int DefaultNumDimensions = 1>

result_type rocrand_cpp::sobol64_engine< DefaultNumDimensions >::max ( ) const

inline

Returns the largest possible value that can be generated by the engine.

◆ min()

template<unsigned int DefaultNumDimensions = 1>

result_type rocrand_cpp::sobol64_engine< DefaultNumDimensions >::min ( ) const

inline

Returns the smallest possible value that can be generated by the engine.

◆ offset()

template<unsigned int DefaultNumDimensions = 1>

void rocrand_cpp::sobol64_engine< DefaultNumDimensions >::offset ( offset_type value )

inline

Sets the offset of a random number engine.

Offset represents a number of the random number engine's states that should be skipped before first value is generated.

This operation resets the engine's internal state.
This operation does not change the engine's seed or the number of dimensions.

Parameters

value - New absolute offset

◆ operator()()

template<unsigned int DefaultNumDimensions = 1>

template<class Generator >

void rocrand_cpp::sobol64_engine< DefaultNumDimensions >::operator()	(	result_type *	output,
		size_t	size
	)

inline

Fills output with uniformly distributed random integer values.

Generates size random integer values uniformly distributed on the interval [0, 2^64 - 1], and stores them into the device memory referenced by output pointer.

Parameters

output	- Pointer to device memory to store results
size	- Number of values to generate

Requirements:

The device memory pointed by output must have been previously allocated and be large enough to store at least size values of IntType type.
size must be a multiple of the engine's number of dimensions.

◆ operator=()

template<unsigned int DefaultNumDimensions = 1>

sobol64_engine& rocrand_cpp::sobol64_engine< DefaultNumDimensions >::operator= ( sobol64_engine< DefaultNumDimensions > && rhs )

inlinenoexcept

Move assign from an other engine, moving the state over.

Parameters

rhs	the engine to move-from

The moved-from engine is safe to assign to or destroy, but otherwise cannot be used.
This engine will continue the sequence generated by rhs.

◆ order()

template<unsigned int DefaultNumDimensions = 1>

void rocrand_cpp::sobol64_engine< DefaultNumDimensions >::order ( order_type value )

inline

Sets the order of a random number engine.

The order refers to the ordering of the sequences generated by the engine.

This operation resets the engine's internal state.
This operation does not change the engine's seed.

Parameters

value - New ordering

◆ stream()

template<unsigned int DefaultNumDimensions = 1>

void rocrand_cpp::sobol64_engine< DefaultNumDimensions >::stream ( hipStream_t value )

inline

Sets the random number engine's hipStream for kernel launches.

Parameters

value - new hipStream to use

◆ type()

template<unsigned int DefaultNumDimensions = 1>

static constexpr rocrand_rng_type rocrand_cpp::sobol64_engine< DefaultNumDimensions >::type ( )

inlinestaticconstexpr

Returns type of the rocRAND pseudo-random number generator associated with the engine.

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

/home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-rocrand/checkouts/docs-6.1.2/library/include/rocrand/rocrand.hpp

sobol64_engine< DefaultNumDimensions > Class Template Reference

sobol64_engine&lt; DefaultNumDimensions &gt; Class Template Reference#

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

template<unsigned int DefaultNumDimensions = 1> class rocrand_cpp::sobol64_engine< DefaultNumDimensions >

Member Typedef Documentation

◆ dimensions_num_type

◆ offset_type

◆ order_type

◆ result_type

Constructor & Destructor Documentation

◆ sobol64_engine() [1/3]

◆ sobol64_engine() [2/3]

◆ sobol64_engine() [3/3]

◆ ~sobol64_engine()

Member Function Documentation

◆ dimensions()

◆ max()

◆ min()

◆ offset()

◆ operator()()

◆ operator=()

◆ order()

◆ stream()

◆ type()

sobol64_engine< DefaultNumDimensions > Class Template Reference#

template<unsigned int DefaultNumDimensions = 1>
class rocrand_cpp::sobol64_engine< DefaultNumDimensions >