Question #233320 on Yade changed:
https://answers.launchpad.net/yade/+question/233320
matthias posted a new comment:
i think at this point, we should examine the impact of that data types.
so please propose somewhat like a model, number of spheres and
iterations,...
this is my proposal :
- maybe 5000 sphere are flowing out of an hopper over maybe 150000 iterations.
not more sphere because of computation time.
- defining a objective Function. this function must defined on all spheres, if
its depends on only some sphere, the functions values are too noisy. the values
of #25 ware generated in the following way:
i defined a plane a little bit below the hopper. every i iterations (for i \in
{1...50}) is measure which sphere passed the plane and store that timestamp (or
iteration number). in the end of a run i calculate the std-dev on this set.
\ /
\******/
\*****/
\****/
\***/
**
------- <- measure timestamp here
++
this objective function should represent how 'compact' the spheres are
flowing out.
during a run could Fmean logged or somelike other...
maybe 50 or 100 replications per data type (wich 2 threads, because more
threads have too much overhead [and 8 threads are much slower then 4 threads,
using real parallel algorithms are a quiet good idea]) should be enough.
what do you think about this?
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