pyarrow.cuda.HostBuffer

class pyarrow.cuda.HostBuffer

Bases: pyarrow.lib.Buffer

Device-accessible CPU memory created using cudaHostAlloc.

To create a HostBuffer instance, use

cuda.new_host_buffer(<nbytes>)

__init__(*args, **kwargs)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(*args, **kwargs)	Initialize self.
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

other (Buffer) –

Returns

are_equal (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

• offset (int, default 0) – Offset from start of buffer to slice.

• length (int, default None) – Length of slice (default is until end of Buffer starting from offset).

Returns

sliced (Buffer) – A logical view over this buffer.

to_pybytes(self)

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

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