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Re: NIntegrate

• To: mathgroup at smc.vnet.net
• Subject: [mg57775] Re: NIntegrate
• From: "antononcube" <antononcube at gmail.com>
• Date: Wed, 8 Jun 2005 03:21:24 -0400 (EDT)
• References: <200506050817.EAA29361@smc.vnet.net><d811od$cd6$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Dear John and Daniel,

I can give some speed-up advice if you show me what type of integrals
you want to integrate numerically.

In general. tuning the NIntegrate's options Method, SingularityDepth,
MaxRecursion, MinRecursion, for a particular integral might give faster
convergence.


Anton Antonov,
Wolfram Research, Inc.


John Roberts wrote:
> Daniel,
>
> My understanding is (I'm definitely not a Mahematica guru) that Mathematica
> automatically does the biggest thing that can be done to speed up
> NIntegrate-- when you run NIntegrate, Mathematica automatically compiles the
> function to be integrated so that it will run as fast as possible. If there
> are any other tricks for making NIntegrate run faster, I would also like to
> know what they are.
>
> By the way, if you have not yet upgraded,  I have found that Mathematica 5.1
> performs NIntegrate at least three times faster than Mathematica 4.1 did on
> the functions that I have been integrating, which involve double integrals
> of fairly large functions.
>
> John
> ----- Original Message -----
> From: "Daniel Arnold" <flashlight at student.unibe.ch>
To: mathgroup at smc.vnet.net
> Subject: [mg57775]  NIntegrate
>
>
> > Hi
> >
> > What should I do first in order to accelerate a numerical integration?
> > Can you give me some hints?
> >
> > Greets, Daniel
> >
> >
> >
> >
> > --
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• References:
  • NIntegrate
    • From: Daniel Arnold <flashlight@student.unibe.ch>