Hello Jpasquerell,

Thanks. That is an issue. As I said, it is not practical for me to change a compiler. First, I do not have Intel compilers. Second, even if I have an Intel fortran compiler and I can change the c calling program (to be compiled by Intel C compiler as well)  to call ansys's subroutines, the c calling program newly compiled by Intel c compiler can not call other program's subroutines which are compiled by non-intel compilers. In other words, the c calling program needs to call different program's subroutines which are compiled by different compilers. Furthermore, I saw that somewhere Intel compilers claim they are compatible with gcc and other compilers. All in all, I think that it is an issue.