yade-dev team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

Vaclav, sorry to write in old bug, but it seems, that the problem is in
DISPLAY= parameter.
I still had problems with different results with different number of
threads. I used just OMP_NUM_THREADS=1 to get identical results.

But when I deleted DISPLAY= parameter from multy-starter, I have no any
problems with number of threads. I can start the same simulations with any
threads and results are identical the difference is only in calculation
speed, what is obvious.

Maybe I am wrong, but it works for me.

Thank you for your help.


2009/7/15 Václav Šmilauer <eudoxos@xxxxxxxx>

> .......Just that everybody knows
> now that slightly different results are OK with openMP (different
> addition order, hence different rounding; if damping!=0, that can make
> very different results) and it is not a bug.
>
>

-- 
different results for same initial simulation (uninitialized values?)
https://bugs.launchpad.net/bugs/394687
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Status in Yet Another Dynamic Engine: Fix Released

Bug description:
First reported by Anton on the ML. The attached script produces different results for same initial simulation. By running it, it will produce 3 saved final simulations and 3 gnuplot plots (suffixed -00, -01, -02). They are different. It should be found out why.