[Pw_forum] installing QE

[Eric Germaneau]

Hey Vicky,

if mpich (for instance) is installed, it will automatically detect it.
Then you will have to do

mpiexec -n 4 path_to_qe_exec < input_file > out_file

in order to use the 4 cores.
Note that this is well documented in the examples.

The other solution is to build QE with  OpenMP, but I have not really tried.
Well, the only one tentative I did was unsuccessful.

Hope it helps,

                              Éric.

On 05/25/2011 12:55 AM, vicky singh wrote:
> Hi
> I have recently  got a new system with i5 processor. Since it has 4 
> processor how can i install QE such that i can run parallel 
> processing. Documentation says just to use ./configure and make to be 
> done for compiling. will these command when run will consider the 
> system configuration and install parallel version.
>
> Thanks for suggestion in advance.
>
> Vicky singh
> research student
> Bangalore
>
>
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-- 
/Be the change you wish to see in the world
/ --- Mahatma Gandhi ---

Dr. Éric Germaneau <mailto:germaneau at gucas.ac.cn>

College of Physical Sciences
Graduate University of Chinese Academy of Sciences
Yuquan Road 19A
Beijing 100049
China

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