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Re: expfit vs harminv - which is faster/smaller ?
From: |
Sergei Steshenko |
Subject: |
Re: expfit vs harminv - which is faster/smaller ? |
Date: |
Tue, 16 Dec 2008 05:55:51 -0800 (PST) |
--- On Tue, 12/16/08, Francesco Potortì <address@hidden> wrote:
> From: Francesco Potortì <address@hidden>
> Subject: Re: expfit vs harminv - which is faster/smaller ?
> To: address@hidden
> Cc: address@hidden
> Date: Tuesday, December 16, 2008, 5:41 AM
> >there is 'expfit' in the forge package and there
> is 'harminv' which is a
> >standalone program (and a library if one needs).
> >
> >If I understand correctly, they both do the same thing.
> >
> >It looks like both are based on BLAS, but maybe
> somebody has experience with
> >both and knows which of them is faster and which of
> them has smaller memory
> >footprint.
> >
> >I think they are about equal, but just want to make
> sure.
>
> By reading the docs, it seems to me that they use different
> methods, are
> thought for different problems and require different
> inputs: expfit
> requires you to give it a number of harmonics to find,
> while harminv
> wants a range where to search for them.
>
> That said, I should make it clear that I have no experience
> whatsoever
> with those methods.
>
> --
> Francesco Potortì (ricercatore) Voice: +39 050 315
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This is what I read in 'man harminv':
"
-f nf Specify a lower bound nf on the number of spectral basis
functions (defaults to 100), setting a lower bound on the number of modes to
search for. This
option is often a more convenient way to specify the number of
basis functions than the -d option, above, which is why it is the default.
".
I am now running 'harminv' and am using this option - I believe it's also
number of hramonics.
So far it seems 'harminv' is less memory hungry and it hasn't yet crashed
on me.
Thanks,
Sergei.
- expfit vs harminv - which is faster/smaller ?, Sergei Steshenko, 2008/12/15
- expfit vs harminv - which is faster/smaller ?, Sergei Steshenko, 2008/12/16
- Re: expfit vs harminv - which is faster/smaller ?, Francesco Potortì, 2008/12/16
- Re: expfit vs harminv - which is faster/smaller ?,
Sergei Steshenko <=
- Re: expfit vs harminv - which is faster/smaller ?, Francesco Potortì, 2008/12/16
- Re: expfit vs harminv - which is faster/smaller ?, Sergei Steshenko, 2008/12/16
- Re: expfit vs harminv - which is faster/smaller ?, Peter L., 2008/12/17
- Re: expfit vs harminv - which is faster/smaller ?, Sergei Steshenko, 2008/12/17
- Re: expfit vs harminv - which is faster/smaller ?, Peter L., 2008/12/19