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Re: vectorized RK4 [message #51538 is a reply to message #51281]

Tue, 21 November 2006 09:49

news.qwest.net
Messages: 137
Registered: September 2005

Senior Member

"Kenneth Bowman" <k-bowman@tamu.edu> wrote in message
news:k-bowman-EF0484.10504321112006@news-new.tamu.edu...
> In article <45536299$0$498$815e3792@news.qwest.net>,
> Bob,
>
> You may have already solved this, but if not, RK4 is simple enough to code
> yourself. You lose a little flexibility, but you can vectorize across
> particles.
>
> Ken Bowman

Thanks, yeah the problem has been addressed (did it in fortran for
a speed up of approximately infinity, lol). This application was calling
the routine thousands of times, and it was very slow.

Actually I was confused about some posts I found in google groups
saying that one could vectorize across particles, and I had mistakenly
assumed it referred to the rk4 procedure that comes with IDL. So
I had wasted some time fiddling with it, trying to make it accept arrays
and stuff before realizing that the posts must have been referring to a
different
routine. (in fact I think it was an old message of yours that I had seen.)

Thanks for the response!

Cheers,
bob

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[Message index]

		vectorized RK4 By: news.qwest.net on Thu, 09 November 2006 09:17
		Re: vectorized RK4 By: news.qwest.net on Tue, 21 November 2006 09:49
		Re: vectorized RK4 By: Kenneth Bowman on Tue, 21 November 2006 08:50

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