Class CudaRegisteredHostMemory_float1

A variable located in page locked (pinned) host memory. Use this type of variabe for asynchronous memcpy.

cuMemHostRegister doesn't work with managed memory (e.g. normal C# arrays). But you can use cuMemHostRegister for natively allocated memory (Marshal.AllocHGlobal, or a native dll).

Type: float1

Inheritance
System.Object
CudaRegisteredHostMemory_float1
Implements
System.IDisposable
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
Assembly: ManagedCuda.dll
Syntax
public class CudaRegisteredHostMemory_float1 : IDisposable

Constructors

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CudaRegisteredHostMemory_float1(IntPtr, SizeT)

Creates a new CudaRegisteredHostMemory_float1 from an existing IntPtr. IntPtr must be page size aligned (4KBytes)!

Declaration
public CudaRegisteredHostMemory_float1(IntPtr hostPointer, SizeT size)
Parameters
Type Name Description
System.IntPtr hostPointer

must be page size aligned (4KBytes)
SizeT size

In elements

Properties

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IsRegisterd

Returns register status

Declaration
public bool IsRegisterd { get; }
Property Value
Type Description
System.Boolean
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Item[SizeT]

Access array per element.

Declaration
public float1 this[SizeT index] { get; set; }
Parameters
Type Name Description
SizeT index

index in elements
Property Value
Type Description
float1
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PinnedHostPointer

Pointer to pinned host memory.

Declaration
public IntPtr PinnedHostPointer { get; }
Property Value
Type Description
System.IntPtr
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Size

Size in elements

Declaration
public SizeT Size { get; }
Property Value
Type Description
SizeT
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SizeInBytes

Size in bytes

Declaration
public SizeT SizeInBytes { get; }
Property Value
Type Description
SizeT

Methods

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AsyncCopyFromArray1D(CUarray, CUstream)

Asynchron copy 1D Array to host

Declaration
public void AsyncCopyFromArray1D(CUarray deviceArray, CUstream stream)
Parameters
Type Name Description
CUarray deviceArray
CUstream stream
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AsyncCopyFromArray1D(CUarray, CUstream, SizeT)

Asynchron copy 1D Array to host

Declaration
public void AsyncCopyFromArray1D(CUarray deviceArray, CUstream stream, SizeT offset)
Parameters
Type Name Description
CUarray deviceArray
CUstream stream
SizeT offset
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AsyncCopyFromArray1D(CudaArray1D, CUstream)

Asynchron copy 1D Array to host

Declaration
public void AsyncCopyFromArray1D(CudaArray1D array, CUstream stream)
Parameters
Type Name Description
CudaArray1D array
CUstream stream
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AsyncCopyFromArray1D(CudaArray1D, CUstream, SizeT)

Asynchron copy 1D Array to host

Declaration
public void AsyncCopyFromArray1D(CudaArray1D array, CUstream stream, SizeT offset)
Parameters
Type Name Description
CudaArray1D array
CUstream stream
SizeT offset
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AsyncCopyFromDevice(CUdeviceptr, CUstream)

Asynchron copy device to host

Declaration
public void AsyncCopyFromDevice(CUdeviceptr devicePtr, CUstream stream)
Parameters
Type Name Description
CUdeviceptr devicePtr
CUstream stream
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AsyncCopyFromDevice(CudaDeviceVariable<float1>, CUstream)

Asynchron copy device to host

Declaration
public void AsyncCopyFromDevice(CudaDeviceVariable<float1> deviceVar, CUstream stream)
Parameters
Type Name Description
CudaDeviceVariable<float1> deviceVar
CUstream stream
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AsyncCopyToArray1D(CUarray, CUstream)

Asynchron copy host to 1D Array

Declaration
public void AsyncCopyToArray1D(CUarray deviceArray, CUstream stream)
Parameters
Type Name Description
CUarray deviceArray
CUstream stream
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AsyncCopyToArray1D(CUarray, CUstream, SizeT)

Asynchron copy host to 1D Array

Declaration
public void AsyncCopyToArray1D(CUarray deviceArray, CUstream stream, SizeT offset)
Parameters
Type Name Description
CUarray deviceArray
CUstream stream
SizeT offset
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AsyncCopyToArray1D(CudaArray1D, CUstream)

Asynchron copy host to 1D Array

Declaration
public void AsyncCopyToArray1D(CudaArray1D array, CUstream stream)
Parameters
Type Name Description
CudaArray1D array
CUstream stream
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AsyncCopyToArray1D(CudaArray1D, CUstream, SizeT)

Asynchron copy host to 1D Array

Declaration
public void AsyncCopyToArray1D(CudaArray1D array, CUstream stream, SizeT offset)
Parameters
Type Name Description
CudaArray1D array
CUstream stream
SizeT offset
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AsyncCopyToDevice(CUdeviceptr, CUstream)

Asynchron Copy host to device

Declaration
public void AsyncCopyToDevice(CUdeviceptr devicePtr, CUstream stream)
Parameters
Type Name Description
CUdeviceptr devicePtr
CUstream stream
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AsyncCopyToDevice(CudaDeviceVariable<float1>, CUstream)

Asynchron Copy host to device

Declaration
public void AsyncCopyToDevice(CudaDeviceVariable<float1> deviceVar, CUstream stream)
Parameters
Type Name Description
CudaDeviceVariable<float1> deviceVar
CUstream stream
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Dispose()

Dispose

Declaration
public void Dispose()
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Dispose(Boolean)

For IDisposable

Declaration
protected virtual void Dispose(bool fDisposing)
Parameters
Type Name Description
System.Boolean fDisposing
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Finalize()

For dispose

Declaration
protected void Finalize()
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GetDevicePointer()

Returns the CUdeviceptr for pinned host memory mapped to device memory space. Only valid if context is created with flag MapHost

Declaration
public CUdeviceptr GetDevicePointer()
Returns
Type Description
CUdeviceptr

Device Pointer
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Register(CUMemHostRegisterFlags)

Page-locks the memory range specified by p and bytesize and maps it for the device(s) as specified by Flags. This memory range also is added to the same tracking mechanism as ::cuMemHostAlloc to automatically accelerate calls to functions such as cuMemcpyHtoD_v2(CUdeviceptr, dim3[], SizeT). Since the memory can be accessed directly by the device, it can be read or written with much higher bandwidth than pageable memory that has not been registered. Page-locking excessive amounts of memory may degrade system performance, since it reduces the amount of memory available to the system for paging. As a result, this function is best used sparingly to register staging areas for data exchange between host and device.

The pointer p and size bytesize must be aligned to the host page size (4 KB).

The memory page-locked by this function must be unregistered with Unregister()

Declaration
public void Register(CUMemHostRegisterFlags flags)
Parameters
Type Name Description
CUMemHostRegisterFlags flags
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SynchronCopyFromArray1D(CUarray)

Synchron copy 1D Array to host

Declaration
public void SynchronCopyFromArray1D(CUarray deviceArray)
Parameters
Type Name Description
CUarray deviceArray
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SynchronCopyFromArray1D(CUarray, SizeT)

Synchron copy 1D Array to host

Declaration
public void SynchronCopyFromArray1D(CUarray deviceArray, SizeT offset)
Parameters
Type Name Description
CUarray deviceArray
SizeT offset
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SynchronCopyFromArray1D(CudaArray1D)

Synchron copy 1D Array to host

Declaration
public void SynchronCopyFromArray1D(CudaArray1D array)
Parameters
Type Name Description
CudaArray1D array
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SynchronCopyFromArray1D(CudaArray1D, SizeT)

Synchron copy 1D Array to host

Declaration
public void SynchronCopyFromArray1D(CudaArray1D array, SizeT offset)
Parameters
Type Name Description
CudaArray1D array
SizeT offset
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SynchronCopyToArray1D(CUarray)

Synchron copy host to 1D Array

Declaration
public void SynchronCopyToArray1D(CUarray deviceArray)
Parameters
Type Name Description
CUarray deviceArray
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SynchronCopyToArray1D(CUarray, SizeT)

Synchron copy host to 1D Array

Declaration
public void SynchronCopyToArray1D(CUarray deviceArray, SizeT offset)
Parameters
Type Name Description
CUarray deviceArray
SizeT offset
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SynchronCopyToArray1D(CudaArray1D)

Synchron copy host to 1D Array

Declaration
public void SynchronCopyToArray1D(CudaArray1D array)
Parameters
Type Name Description
CudaArray1D array
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SynchronCopyToArray1D(CudaArray1D, SizeT)

Synchron copy host to 1D Array

Declaration
public void SynchronCopyToArray1D(CudaArray1D array, SizeT offset)
Parameters
Type Name Description
CudaArray1D array
SizeT offset
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SynchronCopyToDevice(CUdeviceptr)

Synchron copy host to device

Declaration
public void SynchronCopyToDevice(CUdeviceptr devicePtr)
Parameters
Type Name Description
CUdeviceptr devicePtr
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SynchronCopyToDevice(CudaDeviceVariable<float1>)

Synchron copy host to device

Declaration
public void SynchronCopyToDevice(CudaDeviceVariable<float1> devicePtr)
Parameters
Type Name Description
CudaDeviceVariable<float1> devicePtr
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SynchronCopyToHost(CUdeviceptr)

Synchron copy device to host

Declaration
public void SynchronCopyToHost(CUdeviceptr devicePtr)
Parameters
Type Name Description
CUdeviceptr devicePtr
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SynchronCopyToHost(CudaDeviceVariable<float1>)

Synchron copy device to host

Declaration
public void SynchronCopyToHost(CudaDeviceVariable<float1> devicePtr)
Parameters
Type Name Description
CudaDeviceVariable<float1> devicePtr
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Unregister()

Unmaps the memory range whose base address is specified by p, and makes it pageable again.

The base address must be the same one specified to Register(CUMemHostRegisterFlags).

Declaration
public void Unregister()

Implements

System.IDisposable