SMA#

Shared memory arrays for parallel processing.

Note

Usage of this array can help for parallel processing of shared memory arrays. However, using memmap sources (MMP) often enable faster implementations.

base(array)[source]#

Return the underlying multiprocessing shared raw array from a shared numpy array

Arguments

arrayarray: Shared array.

Returns

arrayarray: The raw shared memory base array.

ctype(dtype)[source]#

Determine ctype from array or dtype for ctype array construction

Arguments

dtypearray or dtype: The array or data type to determine the c type from.

Returns

ctypestr: The c-type correspinding to the array or dtype.

empty(shape, dtype=None, order=None)[source]#

Creates a empty shared memory array with numpy wrapper

Arguments

shapetuple of ints: The shape of the shared memory array to create.
dtypearray or dtype: The array or data type to determine the c type from, if None float is used.
orderC’, ‘F’, or None: The order of the array.

Returns

arrayarray: A shared memory array wrapped as ndarray.

ones(shape, dtype=None, order=None)[source]#

Creates a shared memory array of ones with numpy wrapper

Arguments

shapetuple of ints: The shape of the shared memory array to create.
dtypearray or dtype: The array or data type to determine the c type from, if None float is used.
order‘A’, ‘C’, ‘F’, or None: The order of the array. If None, ‘A’ is used.

Returns

arrayarray: A shared memory array wrapped as ndarray.

zeros(shape, dtype=None, order=None)[source]#

Creates a shared memory array of zeros with numpy wrapper

Arguments

shapetuple of ints: The shape of the shared memory array to create.
dtypearray or dtype: The array or data type to determine the c type from, if None float is used.
order‘A’, ‘C’, ‘F’, or None: The order of the array. If None, ‘A’ is used.

Returns

arrayarray: A shared memory array wrapped as ndarray.

zeros_like(source, shape=None, dtype=None, order=None)[source]#

Creates a shared memory array with numpy wrapper using shape, dtype and order from source

Arguments

sourcearray: The source array to use as template.
shapetuple of ints: The shape of the shared memory array to create.
dtypearray or dtype: The array or data type to determine the c type from, if None float is used.
order‘A’, ‘C’, ‘F’, or None: The order of the array. If None, ‘A’ is used.

Returns

arrayarray: A shared memory array wrapped as ndarray basedon the source array.