[Pw_forum] Fortran compiler

[Lorenzo Paulatto]

Replying to message "[Pw_forum] Fortran compiler" from Vo, Trinh (388C)  
(15/03/10):
> I am planning to install some Fortran compiler and MPI for running QE on  
> my cluster.  I don’t have Intel compiler (previously I only used Intel  
> Compiler on another cluster), and I don’t know which free compiler and  
> MPI are most suited for QE.  Could you give me advise on which compiler  
> and MPI that I should install for use with QE.


Also the Sun compiler is free <developers.sun.com/sunstudio/>, and comes  
with a set of algebra libraries that can be
used in place of the slow built-in libraries. It also supports openmp,  
which g95 does not. On the other hand, it is a pain to compile mpi with  
it. Furthermore the most recent version has a terrible bug that totally  
miscompiles the iotk input/output library (you'll have to compile it with  
reduced optimization).

In case you are planning to give it a try I would suggest you contact me  
so I can tell you the 2 or 3 hacks that are necessary.

best regards

-- 
Lorenzo Paulatto
SISSA  &  DEMOCRITOS (Trieste)
phone: +39 040 3787 511
skype: paulatz
www:   http://people.sissa.it/~paulatto/

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