Hello,
At our laboratory we have some old Fortran code which has always been compiled by Power Station 4.0. Now, we want to migrate to Intel Fortran 12, but we are facing some problems.
When we create a dynamic link library using Intel Fortran, the subroutines compiled seem overall to work fine, but we have detected that for some problems, the accuracy of the Intel Fortran library is much lower (algorithms converge to looser tolerance) and sometimes, for complex models, it does not even work. Our code has many subroutines, so, in principle, we cannot analyze them one by one.
I would really appreciate it if someone could give me some ideas on what to look at to solve this problem. I have unsuccessfully looked into some of compiler compatibility options.
I know this is a general problem, but I would be really grateful if I can get some feedback.
Thank you.