[Pw_forum] installing QE

[vicky singh]

Dear Eric
Thanks a lot for your suggestion. Can you let me know that if mpich is not
there can it be installed.

vicky singh

On Wed, May 25, 2011 at 10:42 PM, Eric Germaneau <germaneau at gucas.ac.cn>wrote:

>  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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>
> Dr. Éric Germaneau <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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