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<p>Hi Tao,</p>
<p><br>
</p>
<p>Your problem seems rather related to the operation system.</p>
<p><br>
</p>
<p>Are you using Linux or Windows? <br>
</p>
<p><br>
</p>
<p>If you are using Linux and Intel CPUs then you need to install
the Intel MPI library and make sure that you load the MPI
environmental variable before you run pw.x. Please baidu it.<br>
</p>
<p><br>
</p>
<p>If the MPI library is loaded, run it as "mpirun -np 8 ./pw.x
<input> out" to use all the cores.</p>
<p><br>
</p>
<p>Rolly<br>
</p>
<br>
<div class="moz-cite-prefix">On 09/13/2016 05:20 AM, Yu, Tao wrote:<br>
</div>
<blockquote
cite="mid:MWHPR07MB3056D14B8797A43C0DF07AA6D8FF0@MWHPR07MB3056.namprd07.prod.outlook.com"
type="cite">
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<p>What of parallel environment is required? like MPI, or
something else?</p>
<p><br>
</p>
<p>I just want to make sure with that, only serial QE can run.
Can we still run QE with 8 cores, not crossing nodes? Or that
means I can only run QE with 1 core.</p>
<p><br>
</p>
<p>Tao</p>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
color="#000000" face="Calibri, sans-serif"><b>From:</b>
<a class="moz-txt-link-abbreviated" href="mailto:pw_forum-bounces@pwscf.org">pw_forum-bounces@pwscf.org</a> <a class="moz-txt-link-rfc2396E" href="mailto:pw_forum-bounces@pwscf.org"><pw_forum-bounces@pwscf.org></a>
on behalf of Paolo Giannozzi <a class="moz-txt-link-rfc2396E" href="mailto:p.giannozzi@gmail.com"><p.giannozzi@gmail.com></a><br>
<b>Sent:</b> Monday, September 12, 2016 2:52:36 PM<br>
<b>To:</b> PWSCF Forum<br>
<b>Subject:</b> Re: [Pw_forum] can not install parallel run of
QE</font>
<div> </div>
</div>
<div>
<div dir="ltr">
<div>It is explained in some detail in the user guide:
"configure" did not detect your parallel environment, for
one out 1001 possible reasons
<br>
<br>
</div>
Paolo<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Sep 12, 2016 at 9:49 PM, Yu,
Tao <span dir="ltr">
<<a moz-do-not-send="true" href="mailto:tyu@tntech.edu"
target="_blank">tyu@tntech.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div
style="font-size:12pt;color:#000000;background-color:#ffffff;font-family:Calibri,Arial,Helvetica,sans-serif">
<p>Hi,</p>
<p><br>
</p>
<p>During the installation process, after running
./configure, it returned a piece of information,</p>
<p><br>
</p>
<div>Parallel environment not detected \(is this a
parallel machine?\).\<br>
Configured for compilation of serial executables.<br>
</div>
<p><br>
</p>
<p>What happened there? Does this mean I can only run
with 1CPU? How to fix that?</p>
<p><br>
</p>
<p>Many thanks,</p>
<p><br>
</p>
<p>Tao<br>
</p>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
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rel="noreferrer" target="_blank">http://pwscf.org/mailman/<wbr>listinfo/pw_forum</a><br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>Paolo Giannozzi, Dip. Scienze Matematiche
Informatiche e Fisiche,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine,
Italy<br>
Phone +39-0432-558216, fax +39-0432-558222<br>
<br>
</div>
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<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
PhD. Research Fellow,
Dept. of Physics & Materials Science,
City University of Hong Kong
Tel: +852 3442 4000
Fax: +852 3442 0538</pre>
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