I recently upgraded to composer_xe_2013.1.119 fortran compiler. I was using composer_xe_2011.8.269 before. If I try to compile my program using the same makefile with the new 2013 as the old 2011, I now get an error. The flags that I'm using are:
FFLAGS1 = -stand f03 -free -check all -r8 -fast -shared-intel -heap-arrays -m64 -fp-model source -c
The error I get is: fort: warning #10182: disabling optimization; runtime debug checks enabled
The program compiles, but it runs 4 times slower than when I compile with similar flags using gnu fortran. Also, I have compiled the code using xcode 4.5.1 and it runs faster than the gnu version at the command line. Does anyone know why I'm getting the above error with ifort 2013 and why it is so much slower?