Settings and actions related to the interaction of multiple devices (adding on those already in device.hpp) More...

#include "current_context.hpp"

Include dependency graph for peer_to_peer.hpp:

This graph shows which files directly or indirectly include this file:

Namespaces
	cuda
	All definitions and functionality wrapping the CUDA Runtime API.

	cuda::device
	Definitions and functionality related to CUDA devices (not including the device wrapper type device_t itself)

Functions
void	cuda::context::current::peer_to_peer::enable_access_to (const context_t &context, const context_t &peer_context)

void	cuda::context::current::peer_to_peer::disable_access_to (const context_t &context, const context_t &peer_context)

bool	cuda::context::peer_to_peer::can_access (context_t accessor, context_t peer)
	Check if a CUDA context can access the global memory of another CUDA context.

void	cuda::context::peer_to_peer::enable_access (context_t accessor, context_t peer)
	Enable access by one CUDA device to the global memory of another. More...

void	cuda::context::peer_to_peer::disable_access (context_t accessor, context_t peer)
	Disable access by one CUDA device to the global memory of another. More...

void	cuda::context::peer_to_peer::enable_bidirectional_access (context_t first, context_t second)
	Enable access both by the `first` to the `second` context and the other way around.

void	cuda::context::peer_to_peer::disable_bidirectional_access (context_t first, context_t second)
	Disable access both by the `first` to the `second` context and the other way around.

bool	cuda::device::peer_to_peer::can_access (const device_t &accessor, const device_t &peer)
	Determine whether one CUDA device can access the global memory of another CUDA device. More...

void	cuda::device::peer_to_peer::enable_access (const device_t &accessor, const device_t &peer)
	Enable access by one CUDA device to the global memory of another. More...

void	cuda::device::peer_to_peer::disable_access (const device_t &accessor, const device_t &peer)
	Disable access by one CUDA device to the global memory of another. More...

bool	cuda::device::peer_to_peer::can_access_each_other (const device_t &first, const device_t &second)
	Determine whether two CUDA devices can currently access each other.

void	cuda::device::peer_to_peer::enable_bidirectional_access (const device_t &first, const device_t &second)
	Enable access both by the `first` to the `second` device and the other way around.

void	cuda::device::peer_to_peer::disable_bidirectional_access (const device_t &first, const device_t &second)
	Disable access both by the `first` to the `second` device and the other way around.

attribute_value_t	cuda::device::peer_to_peer::get_attribute (attribute_t attribute, const device_t &first, const device_t &second)
	Get one of the numeric attributes for a(n ordered) pair of devices, relating to their interaction. More...

Variables
constexpr const attribute_t	cuda::device::peer_to_peer::link_performance_rank = CU_DEVICE_P2P_ATTRIBUTE_PERFORMANCE_RANK

constexpr const attribute_t	cuda::device::peer_to_peer::access_support = CU_DEVICE_P2P_ATTRIBUTE_ACCESS_SUPPORTED
	A relative value indicating the performance of the link between two devices.

constexpr const attribute_t	cuda::device::peer_to_peer::native_atomics_support = CU_DEVICE_P2P_ATTRIBUTE_NATIVE_ATOMIC_SUPPORTED
	1 if access is supported, 0 otherwise

Detailed Description

Settings and actions related to the interaction of multiple devices (adding on those already in device.hpp)

Function Documentation

◆ can_access()

bool cuda::device::peer_to_peer::can_access	(	const device_t &	accessor,
		const device_t &	peer
	)

inline

Determine whether one CUDA device can access the global memory of another CUDA device.

Parameters

accessor	device interested in making a remote access
peer	device to be accessed

Returns: true iff acess is possible

◆ disable_access() [1/2]

void cuda::device::peer_to_peer::disable_access	(	const device_t &	accessor,
		const device_t &	peer
	)

inline

Disable access by one CUDA device to the global memory of another.

Parameters

accessor	device interested in making a remote access
peer	device to be accessed

Todo:: Consider disabling this, given that access is context-specific

◆ disable_access() [2/2]

void cuda::context::peer_to_peer::disable_access	(	context_t	accessor,
		context_t	peer
	)

inline

Disable access by one CUDA device to the global memory of another.

Parameters

accessor	device interested in making a remote access
peer	device to be accessed

◆ enable_access() [1/2]

void cuda::device::peer_to_peer::enable_access	(	const device_t &	accessor,
		const device_t &	peer
	)

inline

Enable access by one CUDA device to the global memory of another.

Parameters

accessor	device interested in making a remote access
peer	device to be accessed

Todo:: Consider disabling this, given that access is context-specific

◆ enable_access() [2/2]

void cuda::context::peer_to_peer::enable_access	(	context_t	accessor,
		context_t	peer
	)

inline

Enable access by one CUDA device to the global memory of another.

Parameters

accessor	device interested in making a remote access
peer	device to be accessed

◆ get_attribute()

attribute_value_t cuda::device::peer_to_peer::get_attribute	(	attribute_t	attribute,
		const device_t &	first,
		const device_t &	second
	)

inline

Get one of the numeric attributes for a(n ordered) pair of devices, relating to their interaction.

Note: This is the device-pair equivalent of device_t::get_attribute()

Parameters

attribute	identifier of the attribute of interest
first	the device accessing an att
second	destination device

Returns: the numeric attribute value

Namespaces

Functions

Variables

Detailed Description

Function Documentation

◆ can_access()

◆ disable_access() [1/2]

◆ disable_access() [2/2]

◆ enable_access() [1/2]

◆ enable_access() [2/2]

◆ get_attribute()