undefined | Better HN

0 pointsbertr4nd3y ago0 comments

But what’s the back pressure to this advice? If I need to multiply matrices should I write my own to avoid including MKL BLAS? What’s the heuristic that determines when a dependency is worthwhile?

0 comments

pitched3y ago

I have written a matrix multiplication lib once because I had some a priori about the data and could remove half the operations.

Everything has a cost (usually in time) and everything comes with trade offs (usually a different set of bugs). Not-invented-here comes with a gigantic upfront time cost and a larger set of bugs. The best heuristic depends on what you’re optimizing for. There’s never an easy answer.

patrick4513y ago

As usual, it depends. A naive matrix multiplication function is pretty simple. If that's all you need and can do with sub-optimal performance, I'd write my own.

j / k navigate · click thread line to collapse

0 pointsbertr4nd3y ago0 comments

0 comments

pitched3y ago

I have written a matrix multiplication lib once because I had some a priori about the data and could remove half the operations.

patrick4513y ago

As usual, it depends. A naive matrix multiplication function is pretty simple. If that's all you need and can do with sub-optimal performance, I'd write my own.

j / k navigate · click thread line to collapse