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
whereb
will be replaced inplace withc
.Parameters: - a (
(n_small, k)
ndarray, n_small <= k) – The first array to dot - assumed to be small.n_small
must be smaller thank
so the result can be stored within the memory space ofb
. - 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
thata
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 ontob
(b[:n_small]
) asb
is modified inplace to store the result.- a (