id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
6312	dgesv failing in windows when computing Ax=b	arunkumar palanisamy	Andreas Heuermann	"When computing numerical computation for data Reconciliation, the dgesv solver fails to compute Ax=b in windows, where as for the same problem the solution is successfully computed in linux. An example to reproduce the problem is available in the testsuite in the following location
{{{
testsuite/openmodelica/dataReconciliation/TSP_FourFlows11.mos
testsuite/openmodelica/dataReconciliation/TSP_FourFlows10.mos
}}}

use the old FrontEnd to run the tests

{{{
omc -d=-newInst TSPFourFlows11.mos
}}}

I am attaching the numerical computation log for TSP_FourFlows11.mos ran from linux and windows, look for the heading in the log file

{{{
Calculations of Matrix (F*Sx*Ft) f* = c(x,y) 
============================================
}}}

From the log file we can see that the calculation made for (F*Sx*Ft) and c(x,y) is the same for both in windows and linux, but when computing f*, '''dgesv''' cannot compute the solution in windows.

"	defect	new	high		Run-time	1.16.0