I need ifort-v12 non-commercial compiler for LINUX. I could not find on non-commercial downloads page of Intel. Please help me to get this compiler.
You would take out a non-commercial license for whichever version you get, then register the license at https://registrationcenter.intel.com and see which older versions become available to download.
you can get the free licenses for "non-commercial" use on Linux at http://software.intel.com/en-us/non-commercial-software-development
Select the tool you want to use and follow the steps listed there. It is very easy to do.