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| From: | Carlo de Falco |
| Subject: | Re: Question about LU decomposition |
| Date: | Mon, 19 Apr 2010 20:39:53 +0200 |
On 19 Apr 2010, at 20:38, Jaroslav Hajek wrote:
Oh no, this is really overgeneralized. For instance, pivoted QR typically takes 50% more time than plain QR. Rank-1 updates are also typically more efficient (and simpler) without pivoting. But it is true that unpivoted LU is very seldom used. LAPACK doesn't even have a subroutine for this.
Yes, of course my comment was referred to Gaussian elimination only. c.
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