Class NPPNativeMethods.NPPCore

nppcore.h

Inheritance

System.Object

NPPNativeMethods.NPPCore

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: ManagedCuda.NPP

Assembly: NPP.dll

Syntax

public static class NPPCore

Methods

nppGetGpuComputeCapability()

What CUDA compute model is supported by the default CUDA device?

Before trying to call any NPP functions, the user should make a call this function to ensure that the current machine has a CUDA capable device.

Declaration

public static GpuComputeCapability nppGetGpuComputeCapability()

Returns

Type	Description
GpuComputeCapability	An enum value representing if a CUDA capable device was found and what level of compute capabilities it supports.

nppGetGpuDeviceProperties(ref Int32, ref Int32, ref Int32)

Get the maximum number of threads per SM, maximum threads per block, and number of SMs for the active GPU

Declaration

public static int nppGetGpuDeviceProperties(ref int pMaxThreadsPerSM, ref int pMaxThreadsPerBlock, ref int pNumberOfSMs)

Parameters

Type	Name	Description
System.Int32	pMaxThreadsPerSM
System.Int32	pMaxThreadsPerBlock
System.Int32	pNumberOfSMs

Returns

Type	Description
System.Int32	cudaSuccess for success, -1 for failure.

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nppGetGpuName()

Get the name of the default CUDA device.

Declaration

public static string nppGetGpuName()

Returns

Type	Description
System.String	Name string of the graphics-card/compute device in a system.

nppGetGpuNumSMs()

Get the number of Streaming Multiprocessors (SM) on the default CUDA device.

Declaration

public static int nppGetGpuNumSMs()

Returns

Type	Description
System.Int32	Number of SMs of the default CUDA device.

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nppGetLibVersion()

Get the NPP library version.

Declaration

public static NppLibraryVersion nppGetLibVersion()

Returns

Type	Description
NppLibraryVersion	A struct containing separate values for major and minor revision and build number.

nppGetMaxThreadsPerBlock()

Get the maximum number of threads per block on the default CUDA device.

Declaration

public static int nppGetMaxThreadsPerBlock()

Returns

Type	Description
System.Int32	Maximum number of threads per block on the default CUDA device.

nppGetMaxThreadsPerSM()

Get the maximum number of threads per SM for the active GPU

Declaration

public static int nppGetMaxThreadsPerSM()

Returns

Type	Description
System.Int32	Maximum number of threads per SM for the active GPU.

nppGetStream()

Get the NPP CUDA stream.

NPP enables concurrent device tasks via a global stream state varible. The NPP stream by default is set to stream 0, i.e. non-concurrent mode. A user can set the NPP stream to any valid CUDA stream. All CUDA commands issued by NPP (e.g. kernels launched by the NPP library) are then issed to that NPP stream.

Declaration

public static CUstream nppGetStream()

Returns

Type	Description
CUstream

nppGetStreamMaxThreadsPerSM()

Get the maximum number of threads per SM on the device associated with the current NPP CUDA stream. NPP enables concurrent device tasks via a global stream state varible. The NPP stream by default is set to stream 0, i.e. non-concurrent mode. A user can set the NPP stream to any valid CUDA stream. All CUDA commands issued by NPP (e.g. kernels launched by the NPP library) are then issed to that NPP stream. This call avoids a cudaGetDeviceProperties() call.

Declaration

public static uint nppGetStreamMaxThreadsPerSM()

Returns

Type	Description
System.UInt32

nppGetStreamNumSMs()

Get the number of SMs on the device associated with the current NPP CUDA stream. NPP enables concurrent device tasks via a global stream state varible. The NPP stream by default is set to stream 0, i.e. non-concurrent mode. A user can set the NPP stream to any valid CUDA stream. All CUDA commands issued by NPP (e.g. kernels launched by the NPP library) are then issed to that NPP stream. This call avoids a cudaGetDeviceProperties() call.

Declaration

public static uint nppGetStreamNumSMs()

Returns

Type	Description
System.UInt32

nppSetStream(CUstream)

Set the NPP CUDA stream.

Declaration

public static void nppSetStream(CUstream hStream)

Parameters

Type	Name	Description
CUstream	hStream