dot_inplace_right¶

menpo.math.dot_inplace_right(a, b, block_size=1000)[source]¶

Inplace dot product for memory efficiency. It computes a * b = c where b will be replaced inplace with c.

Parameters

a ((n_small, k) ndarray, n_small <= k) – The first array to dot - assumed to be small. n_small must be smaller than k so the result can be stored within the memory space of b.
b ((k, n_big) ndarray) – Second array to dot - assumed to be large. Will be damaged by this function call as it is used to store the output inplace.
block_size (int, optional) – The size of the block of b that a will be dotted against in each iteration. larger block sizes increase the time performance of the dot product at the cost of a higher memory overhead for the operation.

Returns

c ((n_small, n_big) ndarray) – The output of the operation. Exactly the same as a memory view onto b (b[:n_small]) as b is modified inplace to store the result.