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Re: compound operators - what next?
From: |
Jaroslav Hajek |
Subject: |
Re: compound operators - what next? |
Date: |
Tue, 20 May 2008 08:49:08 +0200 |
On Tue, May 20, 2008 at 7:31 AM, Jaroslav Hajek <address@hidden> wrote:
> On Mon, May 19, 2008 at 11:09 PM, dbateman <address@hidden> wrote:
>
> I'll implement special multiplication for sparse matrices marked as
> diagonal and permuted diagonal.
>
Hmm - now that I think of it, I doubt that it's really worth the
effort. Row or column scaling is seldom a bottleneck (unlike general
sparse*full multiply, which often is), so I guess I can be happy with
the general algorithm and simply use spdiags instead of diag when
coding. Funny how the issue just went away...
Since I have no more good ideas for compound operators, I would claim
the work as complete.
cheers
--
RNDr. Jaroslav Hajek
computing expert
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz
compound operators - what next?, John W. Eaton, 2008/05/19