[Pw_forum] Simple question on parallel IO

Paolo Giannozzi paolo.giannozzi at uniud.it
Mon Feb 24 23:08:37 CET 2014

On Mon, 2014-02-24 at 20:53 +0100, H. Lee wrote:

> In many subroutines, "write" statement is used without the restriction
> to ionode. For example, in c_bands.f90,
>   WRITE( stdout, [...]
> Then, why is not this message printed duplicately for using the cores
> more than one?

because stdout is redirected to /dev/null on all processes except
ionode. It is done somewhere in Modules/environment.f90, I think


Paolo Giannozzi, Dept. Chemistry&Physics&Environment, 
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222 

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