Initialization and Version

Functions

Initialization and Version

HIP API

Collaboration diagram for Initialization and Version:

Functions
hipError_t	hipInit (unsigned int flags)
	Explicitly initializes the HIP runtime. More...
hipError_t	hipDriverGetVersion (int *driverVersion)
	Returns the approximate HIP driver version. More...
hipError_t	hipRuntimeGetVersion (int *runtimeVersion)
	Returns the approximate HIP Runtime version. More...
hipError_t	hipDeviceGet (hipDevice_t *device, int ordinal)
	Returns a handle to a compute device. More...
hipError_t	hipDeviceComputeCapability (int *major, int *minor, hipDevice_t device)
	Returns the compute capability of the device. More...
hipError_t	hipDeviceGetName (char *name, int len, hipDevice_t device)
	Returns an identifer string for the device. More...
hipError_t	hipDeviceGetP2PAttribute (int *value, hipDeviceP2PAttr attr, int srcDevice, int dstDevice)
	Returns a value for attr of link between two devices. More...
hipError_t	hipDeviceGetPCIBusId (char *pciBusId, int len, int device)
	Returns a PCI Bus Id string for the device, overloaded to take int device ID. More...
hipError_t	hipDeviceGetByPCIBusId (int *device, const char *pciBusId)
	Returns a handle to a compute device. More...
hipError_t	hipDeviceTotalMem (size_t *bytes, hipDevice_t device)
	Returns the total amount of memory on the device. More...

Detailed Description

This section describes the initializtion and version functions of HIP runtime API.

Function Documentation

◆ hipDeviceComputeCapability()

hipError_t hipDeviceComputeCapability	(	int *	major,
		int *	minor,
		hipDevice_t	device
	)

Returns the compute capability of the device.

Parameters

[out]	major
[out]	minor
[in]	device

Returns

hipSuccess, #hipErrorInavlidDevice

◆ hipDeviceGet()

hipError_t hipDeviceGet	(	hipDevice_t *	device,
		int	ordinal
	)

Returns a handle to a compute device.

Parameters

[out]	device
[in]	ordinal

Returns

hipSuccess, #hipErrorInavlidDevice

◆ hipDeviceGetByPCIBusId()

hipError_t hipDeviceGetByPCIBusId	(	int *	device,
		const char *	pciBusId
	)

Returns a handle to a compute device.

Parameters

[out]	device	handle
[in]	PCI	Bus ID

Returns

hipSuccess, #hipErrorInavlidDevice, hipErrorInvalidValue

◆ hipDeviceGetName()

hipError_t hipDeviceGetName	(	char *	name,
		int	len,
		hipDevice_t	device
	)

Returns an identifer string for the device.

Parameters

[out]	name
[in]	len
[in]	device

Returns

hipSuccess, #hipErrorInavlidDevice

◆ hipDeviceGetP2PAttribute()

hipError_t hipDeviceGetP2PAttribute	(	int *	value,
		hipDeviceP2PAttr	attr,
		int	srcDevice,
		int	dstDevice
	)

Returns a value for attr of link between two devices.

Parameters

[out]	value
[in]	attr
[in]	srcDevice
[in]	dstDevice

Returns

hipSuccess, #hipErrorInavlidDevice

◆ hipDeviceGetPCIBusId()

hipError_t hipDeviceGetPCIBusId	(	char *	pciBusId,
		int	len,
		int	device
	)

Returns a PCI Bus Id string for the device, overloaded to take int device ID.

Parameters

[out]	pciBusId
[in]	len
[in]	device

Returns

hipSuccess, #hipErrorInavlidDevice

◆ hipDeviceTotalMem()

hipError_t hipDeviceTotalMem	(	size_t *	bytes,
		hipDevice_t	device
	)

Returns the total amount of memory on the device.

Parameters

[out]	bytes
[in]	device

Returns

hipSuccess, #hipErrorInavlidDevice

◆ hipDriverGetVersion()

hipError_t hipDriverGetVersion

(

int *

driverVersion

)

Returns the approximate HIP driver version.

Parameters

[out]

driverVersion

Returns

hipSuccess, #hipErrorInavlidValue

Warning

The HIP feature set does not correspond to an exact CUDA SDK driver revision. This function always set *driverVersion to 4 as an approximation though HIP supports some features which were introduced in later CUDA SDK revisions. HIP apps code should not rely on the driver revision number here and should use arch feature flags to test device capabilities or conditional compilation.

See also

hipRuntimeGetVersion

◆ hipInit()

hipError_t hipInit

(

unsigned int

flags

)

Explicitly initializes the HIP runtime.

Most HIP APIs implicitly initialize the HIP runtime. This API provides control over the timing of the initialization.

◆ hipRuntimeGetVersion()

hipError_t hipRuntimeGetVersion

(

int *

runtimeVersion

)

Returns the approximate HIP Runtime version.

Parameters

[out]

runtimeVersion

Returns

hipSuccess, #hipErrorInavlidValue

Warning

The version definition of HIP runtime is different from CUDA. On AMD platform, the function returns HIP runtime version, while on NVIDIA platform, it returns CUDA runtime version. And there is no mapping/correlation between HIP version and CUDA version.

See also

hipDriverGetVersion