pyarrow.cuda.HostBuffer#

class pyarrow.cuda.HostBuffer#

Bases: Buffer

Device-accessible CPU memory created using cudaHostAlloc.

To create a HostBuffer instance, use

cuda.new_host_buffer(<nbytes>)

__init__(*args, **kwargs)#

Methods

__init__(*args,**kwargs)
equals(self,Bufferother)	Determine if two buffers contain exactly the same data.
hex(self)	Compute hexadecimal representation of the buffer.
slice(self[,offset,length])	Slice this buffer.
to_pybytes(self)	Return this buffer as a Python bytes object.

Attributes

address	The buffer's address, as an integer.
device	The device where the buffer resides.
device_type	The device type where the buffer resides.
is_cpu	Whether the buffer is CPU-accessible.
is_mutable	Whether the buffer is mutable.
memory_manager	The memory manager associated with the buffer.
parent
size

address#

The buffers address, as an integer.

The returned address may point to CPU or device memory. Use is_cpu() to disambiguate.

device#

The device where the buffer resides.

Returns:

Device

device_type#

The device type where the buffer resides.

Returns:

DeviceAllocationType

equals(self, Buffer other)#

Determine if two buffers contain exactly the same data.

Parameters:

otherBuffer

Returns:

are_equalbool

True if buffer contents and size are equal

hex(self)#

Compute hexadecimal representation of the buffer.

Returns:

: bytes

is_cpu#

Whether the buffer is CPU-accessible.

is_mutable#

Whether the buffer is mutable.

memory_manager#

The memory manager associated with the buffer.

Returns:

MemoryManager

parent#

size#

slice(self, offset=0, length=None)#

Slice this buffer. Memory is not copied.

You can also use the Python slice notation buffer[start:stop].

Parameters:

offsetint, default 0

Offset from start of buffer to slice.

lengthint, default None

Length of slice (default is until end of Buffer starting from offset).

Returns:

slicedBuffer

A logical view over this buffer.

to_pybytes(self)#

Return this buffer as a Python bytes object. Memory is copied.