[Numpy-discussion] in place random generation

Daniel Mahler dmahler@gmail....
Thu Mar 8 09:24:16 CST 2007


On 3/8/07, Matthew Brett <matthew.brett@gmail.com> wrote:
> > > My problem is not space, but time.
> > > I am creating a small array over and over,
> > > and this is turning out to be a bottleneck.
>
> How about making one large random number array and taking small views?
>

How is that different from:

++++++++++++++++++++++++++++++++++++++++++++++++++
Allocating all the arrays as one n+1  dim and grabbing rows from it
is faster than allocating the small arrays individually.
I am iterating too many times to allocate everything at once though.
I can just do a nested loop
where create manageably large arrays in the outer
and grab the rows in the inner,
but I wanted something cleaner.
+++++++++++++++++++++++++++++++++++++++++++++++++++

 later in the post

> Matthew

Daniel

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