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, Buffer other)

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.

is_cpu

Whether the buffer is CPU-accessible.

is_mutable

Whether the buffer is mutable.

parent

size

address#

The buffer’s address, as an integer.

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

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.

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.