#include <JETSCAPE/blob/main/external_packages/clvisc_wrapper/include/opencl_backend.h>

Collaboration diagram for clvisc::OpenclBackend:

Public Member Functions
	OpenclBackend (std::string device_type, int device_id)

cl::Program	BuildProgram (std::string fname, const std::string &option)

cl::Kernel	CreateKernel (const cl::Program &prg, std::string func_name)

cl::Context	Context ()

cl::CommandQueue	Queue ()

void	DeviceInfo ()

cl_int	DeviceType ()

float	ExcutionTime (cl::Event &event)

cl::Buffer	CreateBuffer (size_t bytes_of_buffer)

cl::Image2D	CreateImage2DByCopyVector (std::vector< cl_float4 > &source_vector, size_t width, size_t height, bool read_only)

template<typename ValueType >
cl::Buffer	CreateBufferByCopyVector (std::vector< ValueType > &source_vector, bool read_only)

void	enqueue_run (const cl::Kernel &kernel_, const cl::NDRange &global_size, const cl::NDRange &local_size)

template<typename ValueType >
void	enqueue_copy (const std::vector< ValueType > &src_vector, cl::Buffer &dst_buffer)

template<typename ValueType >
void	enqueue_copy (const cl::Buffer &src_buffer, std::vector< ValueType > &dst_vector)

void	enqueue_copy (const cl::Buffer &src_buffer, cl::Buffer &dst_buffer, size_t size)

Public Attributes
cl::Context	context_

cl::CommandQueue	queue_

std::map< std::string, cl::Program >	programs

std::map< std::string, cl::Kernel >	kernel_funcs

std::map< std::string, cl::Buffer >	buffers

Private Member Functions
cl::Context	CreateContext_ (const cl_int &device_type)

Private Attributes
cl_int	device_type_

std::vector< cl::Device >	devices_

cl_int	device_id_

cl::Device	device_

Detailed Description

Definition at line 66 of file opencl_backend.h.

View newest version in sPHENIX GitHub at line 66 of file opencl_backend.h

Constructor & Destructor Documentation

clvisc::OpenclBackend::OpenclBackend	(	std::string	device_type,
		int	device_id
	)

Definition at line 67 of file opencl_backend.cc.

View newest version in sPHENIX GitHub at line 67 of file opencl_backend.cc

References context_, CreateContext_(), device_, device_id_, device_type_, DeviceInfo(), devices_, cl::Context::getInfo(), and queue_.

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Member Function Documentation

cl::Program clvisc::OpenclBackend::BuildProgram	(	std::string	fname,
		const std::string &	option
	)

helper functions: Build each program in programs vector with given options

Note: The compiling error of the kernel *.cl can be print out

Definition at line 131 of file opencl_backend.cc.

View newest version in sPHENIX GitHub at line 131 of file opencl_backend.cc

References context_, device_, devices_, check_license::err(), and tgeo-response2json::prog.

Referenced by clvisc::BulkInfo::BulkInfo(), clvisc::CLIdeal::CLIdeal(), and clvisc::CLVisc::CLVisc().

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cl::Context clvisc::OpenclBackend::Context ( )

inline

return gpu context

Definition at line 89 of file opencl_backend.h.

View newest version in sPHENIX GitHub at line 89 of file opencl_backend.h

References context_.

cl::Buffer clvisc::OpenclBackend::CreateBuffer ( size_t bytes_of_buffer )

create a buffer on GPU, e.g., for one cl_real array of N elements, the bytes_of_buffer = N * sizeof(cl_real)

Definition at line 154 of file opencl_backend.cc.

View newest version in sPHENIX GitHub at line 154 of file opencl_backend.cc

References context_.

Referenced by clvisc::BulkInfo::BulkInfo(), clvisc::CLVisc::initialize_gpu_buffer_(), and clvisc::CLIdeal::initialize_gpu_buffer_().

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template<typename ValueType >

template cl::Buffer clvisc::OpenclBackend::CreateBufferByCopyVector	(	std::vector< ValueType > &	source_vector,
		bool	read_only
	)

create a buffer on GPU, with the same size and content as source_vector Notice: the cl.hpp does not support creating buffers from (const void *); so one can not use const std::vector<ValueType> & source_vector here

Definition at line 159 of file opencl_backend.cc.

View newest version in sPHENIX GitHub at line 159 of file opencl_backend.cc

References context_.

Referenced by clvisc::CLVisc::initialize_gpu_buffer_(), and clvisc::CLIdeal::initialize_gpu_buffer_().

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cl::Context clvisc::OpenclBackend::CreateContext_ ( const cl_int & device_type )

private

helper functions: create context from the device type with one platform which support it