<div dir="ltr"><div>Dear Prof. Paolo,</div><div><br></div><div>Got it. Tanks for your answer and constant efforts in refining the code.</div><div><br></div><div>Bests</div><div>Fang</div><div class="gmail_extra"><br><div class="gmail_quote">2016-05-25 16:22 GMT+09:00 Paolo Giannozzi <span dir="ltr"><<a href="mailto:p.giannozzi@gmail.com" target="_blank">p.giannozzi@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div>Hi<br><br>the only way to reduce I/O in the phonon code is to locate the places where I/O is done, figure out why and how it can be reduced. This is going to be done sooner or later but it requires a significant effort. In any event, the reduction of I/O will lead to an increase of RAM memory requirements.<br><br></div>Paolo<br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Wed, May 25, 2016 at 3:14 AM, Yue-Wen Fang <span dir="ltr"><<a href="mailto:yuewen.fang@gmail.com" target="_blank">yuewen.fang@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div><div class="h5"><div dir="ltr"><div>Dear all,</div><div><br></div><div>As known to all, phonon calculation generate amounts of data and requires well-built I/O, my question is are there some effective methods implemented in the latest versions to reduce the amount of I/O by ph.x?</div><div><br></div><div>BTW, although there is a tag "reduce_io" in ph.x, Prof. Paolo has ever said in the mail-list that it only affected the first step in scf calculation several years ago.</div><div><br></div><div><br clear="all">Bests</div><span><font color="#888888"><div>Fang<br>-- <br></div><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">------------------------------------------------------------------------------------------------------------<div>Yue-Wen FANG, PhD student<div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><a href="http://english.ecnu.edu.cn/" target="_blank">East China Normal University</a>, China</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">Japan Fine Ceramics Center, Japan</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><br></div></div><div><br></div><div><br></div></div></div></div></div></div></div></div>
</font></span></div>
<br></div></div>_______________________________________________<br>
Pw_forum mailing list<br>
<a href="mailto:Pw_forum@pwscf.org" target="_blank">Pw_forum@pwscf.org</a><br>
<a href="http://pwscf.org/mailman/listinfo/pw_forum" target="_blank" rel="noreferrer">http://pwscf.org/mailman/listinfo/pw_forum</a><span class="HOEnZb"><font color="#888888"><br></font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><br>-- <br><div><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 <a href="tel:%2B39-0432-558216" target="_blank" value="+390432558216">+39-0432-558216</a>, fax <a href="tel:%2B39-0432-558222" target="_blank" value="+390432558222">+39-0432-558222</a><br><br></div></div></div></div></div>
</font></span></div>
<br>_______________________________________________<br>
Pw_forum mailing list<br>
<a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><br>
<a href="http://pwscf.org/mailman/listinfo/pw_forum" target="_blank" rel="noreferrer">http://pwscf.org/mailman/listinfo/pw_forum</a><br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">------------------------------------------------------------------------------------------------------------<div>Yue-Wen FANG, PhD student<div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><a href="http://english.ecnu.edu.cn/" target="_blank">East China Normal University</a>, China</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">Japan Fine Ceramics Center, Japan</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><br></div></div><div><br></div><div><br></div></div></div></div></div></div></div></div>
</div></div>