[petsc-dev] Fast sorted intersection

Barry Smith bsmith at mcs.anl.gov
Thu Jun 7 20:27:38 CDT 2012

  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.

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