Thanks for these ideas.

I didn't succeed with setting the parameter to -O0.

However I have problem to switch the compiler to msvc. I used in openmodelica shell setCompiler("msvc") but i have a message saying that MinGW32 doest not recognize msvc which mean that it is still GCC that compiles.

How I can do this switch?

Thanks

I have 8 GB ram

gcc   -falign-functions -msse2 -mfpmath=sse   -I"C:/OpenModelica1.9.0//include/omc" -I. -L"C:/Dymola"   -c -o Sterilisation.Tests_assemblage.Test.o Sterilisation.Tests_assemblage.Test.c

cc1.exe: out of memory allocating 65536 bytes
mingw32-make: *** [Sterilisation.Tests_assemblage.Test.o] Error 1

The same model compiles well with dymola (using the MSVC++)

Thank you for your help,

Assaad