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Re: [Help-gsl] ode version and compilers
From: |
Alan Fung |
Subject: |
Re: [Help-gsl] ode version and compilers |
Date: |
Wed, 6 Nov 2013 01:02:57 +0800 |
I agree that they should be the same. I have just found that the problem I
have encountered is particular to my simulation program. Because I have
not putted the time dependent term inside function func. Sorry about
that. So, the only thing we want to address is only the performance issue.
Alan
2013/11/5 Rhys Ulerich <address@hidden>
> > Also, I found that numerical results by 1.16 and 1.15 are different (less
> > than 0.1%). I doubt it is because of revision 4771. I have modified the
> > source code of 1.16 to undo revision 4771. And I found that, without
> 4771,
> > results by 1.16 and 1.15 are the same with each other. So, I question
> > whether revision 4771 do a better job or a worse job, in terms of
> accuracy.
>
> It is possible that something subtle is happening (as I've not traced
> through the logic in detail), but I am uncertain how copying the
> result of a deterministic calculation is losing accuracy relative to
> recomputing it.
>
> - Rhys
>
- Re: [Help-gsl] ode version and compilers, (continued)
- Re: [Help-gsl] ode version and compilers, Alan Fung, 2013/11/05
- Re: [Help-gsl] ode version and compilers, Rhys Ulerich, 2013/11/05
- Re: [Help-gsl] ode version and compilers, Tuomo Keskitalo, 2013/11/05
- Re: [Help-gsl] ode version and compilers, Alan Fung, 2013/11/05
- Re: [Help-gsl] ode version and compilers, Rhys Ulerich, 2013/11/06
- Re: [Help-gsl] ode version and compilers, Alan Fung, 2013/11/06
- Re: [Help-gsl] ode version and compilers, Tuomo Keskitalo, 2013/11/06
Re: [Help-gsl] ode version and compilers, Brian Gladman, 2013/11/05