[petsc-dev] Fast sorted intersection

[Barry Smith]

  Yup, symbolic part of MatMatMult().


On Jun 7, 2012, at 7:36 PM, Jed Brown wrote:

> MatGetSubMatrix and some of the matrix-matrix kernels might benefit from this operation. I don't know if it's a bottleneck, but if it is, this shows how to make it fast.
> 
> https://highlyscalable.wordpress.com/2012/06/05/fast-intersection-sorted-lists-sse/
> 
> Not a deep insight or surprising, but still a nice write-up.