I have two questions about -fast option.
1- Although , in my code, returns around %20 performance increase -fast option makes compile time really long. Usually around 20 minutes.
I can live with that but is it normal? Is there any tricks at the coding level to decrease compile time?
2- In my project I am trying to use DISLIN package which requires X11 and OpenGL libraries. I have successfully linked using
-L/usr/lib64/ -lX11 -lGL .
With this link I can compile &run my code if I use -O3 optimization level. However if I try to use -fast option compiler returns with
cannot find -lX11. I don't want to sacrifice with -fast option but also want to use DISLIN package.