From your questions, it sounds like you are just getting started. So
it will likely be better for you to only install one version of WIEN2k
on your computer.
I think even Linux/WIEN2k guru avoid having multiple WIEN2k versions on
a computer. That is because you have to be careful not to mix
incompatible files between the different WIEN2k versions  and you
have to frequently edit and keep track of WIENROOT in .bashrc or use
full paths and keep track of the ones being used for each program. I
have seen a more elegant way of doing that on some clusters with module
, but that is most likely something usually setup by an Information
Technology (IT) professional.
In one aspect, WIEN2k 11 was better than WIEN2k 12, because 12 had a
serious bug were the fftpack was broken . However, WIEN2k 11
contained some other significant bugs (like the blocksize bug ) that
were fixed in WIEN2k 12. The bugs of those versions have been fixed and
further improvements have been made as shown on the WIEN2k updates
webpage , so it is very beneficial to install and use the latest
WIEN2k version (currently, 16.1 ). Maintaining the old versions
yourself can be problematic as I mentioned before .
On 1/8/2017 7:19 AM, Sahra Sahraii wrote:
Dear Wien2k users
I have alraedy installed the wien2k 11 on my computer, As I want to
have two versions of wien2k together I am trying to install wien2k12 too.
I have installed wien12 but I can't do any calculation with it.
I don't know what is the problem?
Could you please help me to solve my problem?
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