Re: [Yade-users] [Question #228175]: Accelerate the simulation with CUDA

2013-05-07 Thread Eugen Kubowsky
Question #228175 on Yade changed:
https://answers.launchpad.net/yade/+question/228175

Eugen Kubowsky posted a new comment:
I agree Anton. It's a good performance for that number of particles and
the corresponding number of interactions gouing in hand with that for a
compression test.

Btw.: here is the link[2] from above which I could not paste in here as wiki 
was down:
https://yade-dem.org/wiki/Multicore_Performance

I'll complete it step by step. You all are very welcome to include your
own stats and give feedback. best would be if you do so by editing the
wiki article

-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp


Re: [Yade-users] [Question #222363]: Material Parameters about Kn and Ks

2013-05-07 Thread Fu zuoguang
Question #222363 on Yade changed:
https://answers.launchpad.net/yade/+question/222363

Fu zuoguang posted a new comment:
Dear all:
 Thanks for helping me last time and I have some questions about the 
Parameters about Kn and Ks. I have read Yade's documents and the Question 
#222363 from Henry. Despite I have known that the relationship between 
micro-parameters 
Kn, Ks and macro-parameters E,P can be described as:
Kn=2.*E*R1*E*R2/(E*R1+E*R2) (1)
Ks/Kn=P (2)
these can not solve my problem completely because that in my simulation, Kn and 
Ks are unchanged in different contacts. How can I do to achieve this. 
Seeking your help
1

-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp


Re: [Yade-users] [Question #222363]: Material Parameters about Kn and Ks

2013-05-07 Thread Jan Stránský
Question #222363 on Yade changed:
https://answers.launchpad.net/yade/+question/222363

Jan Stránský posted a new comment:
Hello,

in the formulas (1) and (2), E and P does not refer to macroscopic
parameters. E and P refer to material parameters young and poisson, but
they ar NOT the same as macroscopic Young's modulus and Poisson's ratio.

Furthermore, from your question I could not really understand what your
problem is. Could you please be more clear?
thanks
Jan


2013/5/7 Fu zuoguang question222...@answers.launchpad.net

 Question #222363 on Yade changed:
 https://answers.launchpad.net/yade/+question/222363

 Fu zuoguang posted a new comment:
 Dear all:
  Thanks for helping me last time and I have some questions about the
 Parameters about Kn and Ks. I have read Yade's documents and the Question
 #222363 from Henry. Despite I have known that the relationship between
 micro-parameters
 Kn, Ks and macro-parameters E,P can be described as:
 Kn=2.*E*R1*E*R2/(E*R1+E*R2) (1)
 Ks/Kn=P (2)
 these can not solve my problem completely because that in my simulation,
 Kn and Ks are unchanged in different contacts. How can I do to achieve this.
 Seeking your help
 1

 --
 You received this question notification because you are a member of
 yade-users, which is an answer contact for Yade.

 ___
 Mailing list: https://launchpad.net/~yade-users
 Post to : yade-users@lists.launchpad.net
 Unsubscribe : https://launchpad.net/~yade-users
 More help   : https://help.launchpad.net/ListHelp


-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp


Re: [Yade-users] [Question #228175]: Accelerate the simulation with CUDA

2013-05-07 Thread Bruno Chareyre
Question #228175 on Yade changed:
https://answers.launchpad.net/yade/+question/228175

Bruno Chareyre proposed the following answer:
I'm afraid that such number of calculation timesteps is necessary
because the stress-strain curve didn't reach a steady state yet.

The question is how you define the timestep (is it already the largest 
acceptable dt for stability?) and if some parameters could be tweaked to let 
larger dt be used.
Typically, if you are interested in the steady state, it doesn't really matter 
if the stiffness is a bit less...

-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp


[Yade-users] [Question #228361]: MultiSizedSpheres ?

2013-05-07 Thread Markus Gruber
New question #228361 on Yade:
https://answers.launchpad.net/yade/+question/228361

Is there any possible to use only decent spheres , i just want to fill a cube 
with different spheres just for example the space of the cube should be 
replaced by three different types of sphers the first kind of sphere should 
have r1=? and the second kind r2=? but all spheres replaces the same space of 
the cube , so there  are 3 types of spheres within the cube 

best regards



-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp


Re: [Yade-users] [Question #228361]: MultiSizedSpheres ?

2013-05-07 Thread Anton Gladky
Question #228361 on Yade changed:
https://answers.launchpad.net/yade/+question/228361

Anton Gladky proposed the following answer:
https://www.yade-
dem.org/doc/yade.wrapper.html?highlight=spheresfactory#yade.wrapper.SpheresFactory

exactDiam=true is what you need to get an exact particle diameters.

Cheers,

Anton


2013/5/7 Markus Gruber question228...@answers.launchpad.net:
 New question #228361 on Yade:
 https://answers.launchpad.net/yade/+question/228361

 Is there any possible to use only decent spheres , i just want to fill a cube 
 with different spheres just for example the space of the cube should be 
 replaced by three different types of sphers the first kind of sphere should 
 have r1=? and the second kind r2=? but all spheres replaces the same space of 
 the cube , so there  are 3 types of spheres within the cube

 best regards



 --
 You received this question notification because you are a member of
 yade-users, which is an answer contact for Yade.

 ___
 Mailing list: https://launchpad.net/~yade-users
 Post to : yade-users@lists.launchpad.net
 Unsubscribe : https://launchpad.net/~yade-users
 More help   : https://help.launchpad.net/ListHelp

-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp


Re: [Yade-users] [Question #228361]: MultiSizedSpheres ?

2013-05-07 Thread Jan Stránský
Question #228361 on Yade changed:
https://answers.launchpad.net/yade/+question/228361

Status: Open = Answered

Jan Stránský proposed the following answer:
Hello Markus,
see https://answers.launchpad.net/yade/+question/226352, especially aswer #4
I am not sure If I understood your question right..
cheers
Jan


2013/5/7 Markus Gruber question228...@answers.launchpad.net

 New question #228361 on Yade:
 https://answers.launchpad.net/yade/+question/228361

 Is there any possible to use only decent spheres , i just want to fill a
 cube with different spheres just for example the space of the cube should
 be replaced by three different types of sphers the first kind of sphere
 should have r1=? and the second kind r2=? but all spheres replaces the same
 space of the cube , so there  are 3 types of spheres within the cube

 best regards



 --
 You received this question notification because you are a member of
 yade-users, which is an answer contact for Yade.

 ___
 Mailing list: https://launchpad.net/~yade-users
 Post to : yade-users@lists.launchpad.net
 Unsubscribe : https://launchpad.net/~yade-users
 More help   : https://help.launchpad.net/ListHelp


-- 
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.

___
Mailing list: https://launchpad.net/~yade-users
Post to : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help   : https://help.launchpad.net/ListHelp