id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
3397	Sorting of algebraic loops can affect solvability	Willi Braun	somebody	"In some cases it is possible to affect the solvability by reorder the variables of an algebraic loop. 
In the following examples 
[https://test.openmodelica.org/libraries/PlanarMechanics/files/PlanarMechanics.Examples.KinematicLoop_DynamicStateSelection.err]
the reordering of the linear algebraic loops has changed with the commit
[https://trac.openmodelica.org/OpenModelica/changeset/25096]
and now there is a numerical singularity, while the solving process. 

So here we have here an instance of an effect that we experienced already sometimes, in order to solve such an issue we need a reordering strategy of algebraic loops in the Backend. Any ideas?"	defect	new	high	Future	Backend	trunk			Lennart Ochel Adrian Pop Martin Sjölund