test model performance using different combinations of compiler flags

[changks888]

Hi all,

I'm planing to test the performance of a simulation model across platforms and compilers (ifort and gfortran).

I am testing -fpe0, -O1, -O2, -O3,-heap-arrays and -ftrapuv.

Are there any flags can be tested in this exercise?

Please let me know any suggestions.

Thanks,

Michael

[Steven_L_Intel1 · Accepted solution]

Don't bother with -ftrapuv. It does nothing useful. I would suggest -fast if you want a set of options for Intel Fortran that generally give best performance. You might want to see what -parallel does for you as well.