Re: Matrix multiplication performance
Michael Lehn <[email protected]>
| Newsgroups | gmane.comp.lib.boost.ublas |
|---|---|
| Message-ID | <[email protected]> |
On 27 Jan 2016, at 16:52, Michael Lehn <[email protected]> wrote: > >> 5. ublas is one of the fastest libraries for small matrices. Because I think the most prevalent use of dense multiplication is on small matrices ( geometric transformations etc.) we need to make sure this stays that way. > > Depends on the domain of usage. In my domain dense matrix multiplication is the key to both, fast dense linear algebra (LAPACK etc.) and > sparse direct or iterative solvers. But sure, we should have both. (Iterative solvers are only fast if you use pre conditioners that “smell" like direct solvers)