Static pivoting

>From Iain Duff...
Happy Thanksgiving! 
--Alex 

> ++++++++++++++
> > From isd Thu Nov 16 08:26 GMT 2006
> > Date: Thu, 16 Nov 2006 08:26:29 GMT
> > From: Iain Duff <isd>
> > To: csc-lVPF2Jp+hdv2fBVCVOL8/[email protected]
> > Subject: Static pivoting
> > Cc: isd
> > X-Status: 
> > 
> > Sorry about the delay in getting back to the CSC list on the topic of
> > static pivoting but I have just been travelling first in China and now
> > (on a quite separate journey) in Australia.
> > 
> > I had many responses to my earlier questions, some offline from CSC. 
In
> > fact, it is not really possible to summarize them because many were
> > answering the questions from quite different perspectives.  I will
> > thus try a different track that I have already field tested on some
> > colleagues.
> > 
> > I would like to define "static pivoting" as any scheme for selecting 
pivots
> > in an elimination method that enables a static data structure to be 
used.
> > For example, in the case of supernodal or multifrontal methods, this 
would
> > mean that the data structures (eg assembly trees) determined by the
> > analysis phase would be respected by the numerical factorization.
> > 
> > Comments please.
> > 
> > Best wishes
> > 
> > Iain
> >

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