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Re: Optimized contact detection available

 

Hi,
this is the result of my "working" simulation.
About >100 000 bodies (I guess).

Thread   iter/sec
  1            3,42
  2            5,61
  3            7,57
  4            9,11

The old speed on 1 thread is about 1,62 iter/sec
So speedup factor is more than 2!

The good news, that it is paralleled very good.
The dependency is not linear, but anyway....

Thank you, Bruno!

We just need to test it more precisely, but it seems it is a good major change.

Anton



2012/2/1 Christian Jakob <jakob@xxxxxxxxxxxxxxxxxxx>:
> Zitat von Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>:
>
>> Thanks!
>> You would actually outrun PFC by a large factor if you could compare
>> with, let's say, 80k spheres. I have no way to test PFC on my side
>> unfortunately.
>> Please, please, try it! :)
>
>
> Ok, I will try that soon.
> I am thinking about two models for speed test, one quasi-static model and a
> dynamic one. Has anyone an idea how a simple dynamic model for a speed test
> could look like?!
>
>
>>
>> Bruno
>>
>> p.s. Please reply to the mailing list, not to me directly. If you are
>> using thunderbird, there is "reply to list" button, else you have to
>> type the mailing list adress I guess.
>
>
> Sorry, I was clicking on the wrong button ...
>
>
>>
>>
>> On 01/02/12 14:50, Christian Jakob wrote:
>>>
>>> Great work!
>>>
>>> I reactivated my speed test with bzr3011 and got a speed-up between 10
>>> and 20 %. I updated the comparison page:
>>>
>>> https://yade-dem.org/wiki/Comparisons_with_PFC3D
>>>
>>> The new collider version makes yade up to 20 % faster than pfc! It
>>> seems, that you are outrunning pfc ;)
>>>
>>> Zitat von Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>:
>>
>>
>>
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>
>
>
>
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