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Dear community. We got the license for ParallelStudio XE Composer Fortran for Windows, but it turned out that the codes we were running in GNU FORTRAN are three or even 4 times slower when we use the Intel compilers for fortran. I know that there has to be something that I am overlooking, because It has been demonstrated that Intel compilers are faster and more efficient that GNU compilers.
I have read the manuals but I have not found anything yet. I also found something similar on the web another user reporting the same issue. He needed to use different flags when compiling. However, I am user Visual Studio and all these compiling options are difficult to find.
I will greatly appreciate your contribution in this problem. !!!