org.lwjgl.opencl

Class AMDDeviceTopology

java.lang.Object

org.lwjgl.opencl.AMDDeviceTopology

public final class AMDDeviceTopology
extends java.lang.Object

Native bindings to the amd_device_topology extension.

This extension enables the developer to get a description of the topology used to connect the device to the host.

Field Summary

Fields

Modifier and Type	Field and Description
static int	CL_DEVICE_TOPOLOGY_AMD Accepted as the param_name parameter of GetDeviceInfo.
static int	CL_DEVICE_TOPOLOGY_TYPE_PCIE_AMD Indicates the type of the struct returned by DEVICE_TOPOLOGY_AMD.

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CL_DEVICE_TOPOLOGY_AMD

public static final int CL_DEVICE_TOPOLOGY_AMD

Accepted as the param_name parameter of GetDeviceInfo. Returns a description of the topology used to connect the device to the host, using the following 32-bytes union of structures:

 typedef union
 {
     struct { cl_uint type; cl_uint data[5]; } raw;
     struct { cl_uint type; cl_char unused[17]; cl_char bus; cl_char device; cl_char function; } pcie;
 } cl_device_topology_amd;

The type of the structure returned can be queried by reading the first unsigned int of the returned data. The developer can use this type to cast the returned union into the right structure type.

Currently, the only supported type in the structure above is DEVICE_TOPOLOGY_TYPE_PCIE_AMD. The information returned contains the PCI Bus/Device/Function of the device, and is similar to the result of the lspci command in Linux. It enables the developer to match between the OpenCL device ID and the physical PCI connection of the card.

See Also:

Constant Field Values

CL_DEVICE_TOPOLOGY_TYPE_PCIE_AMD

public static final int CL_DEVICE_TOPOLOGY_TYPE_PCIE_AMD

Indicates the type of the struct returned by DEVICE_TOPOLOGY_AMD.

See Also:

Constant Field Values