Hello, when I compile petsc with --with-debugging=0 with gcc and icc in configure there are different optimization flags set depending on compiler. So is with gcc -O set wich means -O1 optimization. While with icc -O3 optimisation is set. Is there a reason only icc gets the high performance flag while gcc not? Are there any problems when some optimizations are activated on gcc?
with greetings Manfred
