yade-dev team mailing list archive

[boon chiaweng <booncw@xxxxxxxxxxx>]

There is a possibility that one day we can have a flag for different integration methods. 


Yours,

Boon



----------------------------------------
> Date: Tue, 6 Apr 2010 11:19:17 +0200
> From: bruno.chareyre@xxxxxxxxxxx
> To: eudoxos@xxxxxxxx
> CC: yade-dev@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Yade-dev] NewtonIntegrator::exactAsphericalRot
>
>
>> I just had the idea that we could selectively call
>> leapfrogSphericalRotate for bodies that have
>> inertia[0]==inertia[1]==interia[2] and leapfrogAsphericalRotate for the
>> rest; the exactAsphericalRot could be removed then.
>>
>> The impact should be negligible and all non-spherical bodies would be
>> moved "exactly" without changing any options.
>>
>>
>
> Hi, it sounds correct. Though, I'm not opposed but I'm always a bit
> afraid of introducing additional operations when they are not strictly
> necessary. The DEM algorithm is quite simple in itself. In one sense,
> adding negligible costs here and there to something that is itself
> negligible will result in a "significant" impact. But as long as people
> include the negligible stuff one by one, nobody will never notice, we
> could just end with a slow code, with no idea were to look for
> optimizations. I'm wondering.
>
>
> Bruno
>
>
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