<span class="gD" style="color: rgb(91, 16, 148);">Dear Eric</span><br>Thanks a lot for your suggestion. Can you let me know that if mpich is not there can it be installed.<br><br>vicky singh<br><br><div class="gmail_quote">
On Wed, May 25, 2011 at 10:42 PM, Eric Germaneau <span dir="ltr"><<a href="mailto:germaneau@gucas.ac.cn">germaneau@gucas.ac.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div bgcolor="#ccccff" text="#000000">
Hey Vicky,<br>
<br>
if mpich (for instance) is installed, it will automatically detect
it.<br>
Then you will have to do <br>
<br>
<font color="#663366">mpiexec -n 4 path_to_qe_exec < input_file
> out_file</font><br>
<br>
in order to use the 4 cores.<br>
Note that this is well documented in the examples.<br>
<br>
The other solution is to build QE with OpenMP, but I have not
really tried.<br>
Well, the only one tentative I did was unsuccessful.<br>
<br>
Hope it helps,<br>
<br>
Éric.<div><div></div><div class="h5"><br>
<br>
On 05/25/2011 12:55 AM, vicky singh wrote:
</div></div><blockquote type="cite"><div><div></div><div class="h5">Hi<br>
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.<br>
<br>
Thanks for suggestion in advance.<br>
<br>
Vicky singh<br>
research student <br>
Bangalore<br>
</div></div><pre><fieldset></fieldset>
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<br>
<a href="mailto:germaneau@gucas.ac.cn" target="_blank">Dr. Éric Germaneau</a><br>
<br>
College of Physical Sciences<br>
Graduate University of Chinese Academy of Sciences<br>
Yuquan Road 19A<br>
Beijing 100049<br>
China<br>
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