Re: [Yade-dev] : Add damping coefficient to material
> Real getDampCoeff() { return material->damping; };
Can you check here a material existence?
Anton
On Thu, Jan 19, 2012 at 8:14 AM, Klaus Thoeni wrote:
> Hi guys,
>
> can anyone help me on this?
>
> Klaus
>
> On Thu, 12 Jan 2012 06:03:16 PM Klaus Thoeni wrote:
>> Hi guys,
>>
>> as discussed with Bruno in Barcelona I need different non-viscous damping
>> coefficients for different materials. I introduced this capability by
>> adding a variable damping to the base class material which is initialised
>> with NaN. The body class has a function getDampCoeff() and in
>> NewtonIntegrator I use this function in order to change the damping
>> coefficients. When running some examples it seems that everything works
>> fine. However, I just run 'yade --test' and it gives me a seg fault:
>>
>> testVelocity (yade.TestSimpleClump)
>> Clump: velocities of member assigned by NewtonIntegrator ... Segmentation
>> fault
>>
>> I think I now where the problem is. In NewtonIntegrator I call something
>> like:
>>
>> if(!isnan(b->getDampCoeff())) dampcoeff=b->getDampCoeff();
>>
>> where getDampCoeff() is defined in body.hpp as:
>>
>> Real getDampCoeff() { return material->damping; };
>>
>> I think the test doesn't have a material and therefore I get the seg fault.
>> Right? How can we fix this so that I can commit the code?
>>
>> Klaus
>
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Re: [Yade-dev] : Add damping coefficient to material
Hi guys,
can anyone help me on this?
Klaus
On Thu, 12 Jan 2012 06:03:16 PM Klaus Thoeni wrote:
> Hi guys,
>
> as discussed with Bruno in Barcelona I need different non-viscous damping
> coefficients for different materials. I introduced this capability by
> adding a variable damping to the base class material which is initialised
> with NaN. The body class has a function getDampCoeff() and in
> NewtonIntegrator I use this function in order to change the damping
> coefficients. When running some examples it seems that everything works
> fine. However, I just run 'yade --test' and it gives me a seg fault:
>
> testVelocity (yade.TestSimpleClump)
> Clump: velocities of member assigned by NewtonIntegrator ... Segmentation
> fault
>
> I think I now where the problem is. In NewtonIntegrator I call something
> like:
>
> if(!isnan(b->getDampCoeff())) dampcoeff=b->getDampCoeff();
>
> where getDampCoeff() is defined in body.hpp as:
>
> Real getDampCoeff() { return material->damping; };
>
> I think the test doesn't have a material and therefore I get the seg fault.
> Right? How can we fix this so that I can commit the code?
>
> Klaus
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Re: [Yade-dev] : Avoid new contact detection between group of particle
Just tried it out and you are both right. There is almost no speedup. Thanks, Klaus On Tue, 17 Jan 2012 05:55:43 PM Anton Gladky wrote: > I think, Bruno is right. > There will unlikely be a speedup. But you can try anyway. > > Anton > > On Tue, Jan 17, 2012 at 7:23 AM, Klaus Thoeni wrote: > > Hi Bruno, > > > > On Mon, 16 Jan 2012 11:20:57 PM Bruno Chareyre wrote: > >> >> It would work but it would be ugly to include WireMat.hpp in the > >> >> collider's code. > >> > > >> > I agree but I would need a quick solution. > >> > >> The the sort of quick solution that you will never commit? Then try it. > >> My bet is that, unfortunately, it will not give a very big speedup. > >> The big task of the collider is to sort bounds, and it has to be done > >> for all your elements anyway, since they can interact with other bodies. > > > > Quick and dirty ;-) But I prefer you solution anyway. > > > >> >> I'm thinking we could have a global "selfInteractionMask", so that if > >> >> mask1==mask2 && !(mask1 & selfInteractionMask), we skip. > >> > > >> > Please, can you give some more details? And how and where would this > >> > "selfInteractionMask" be implemented? > >> > >> Collider.cpp:13, this is where masks are compared in bool maycollide(). > >> You could test bodies masks with a self-interaction mask there, the new > >> mask could be a member of the collider. > >> Maybe try the first method before deciding if it's worth the additional > >> test. > > > > I will try to implement it in the next couple of days. So you think there > > will be no speed-up? Any other suggestion how I can get some speed-up? > > > > Thanks > > > > > > ___ > > Mailing list: https://launchpad.net/~yade-dev > > Post to : yade-dev@lists.launchpad.net > > Unsubscribe : https://launchpad.net/~yade-dev > > More help : https://help.launchpad.net/ListHelp > > ___ > Mailing list: https://launchpad.net/~yade-dev > Post to : yade-dev@lists.launchpad.net > Unsubscribe : https://launchpad.net/~yade-dev > More help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~yade-dev Post to : yade-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp
[Yade-dev] : yade.qt doc
Hi guys, there is something wrong with the docmuentation of module yade.qt. Nothing is shown on the doc site: https://yade-dem.org/doc/yade.qt.html and it's not listed in the index: https://yade-dem.org/doc/py-modindex.html Have a look. Klaus ___ Mailing list: https://launchpad.net/~yade-dev Post to : yade-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp
