<div dir="ltr"><div>Please provide an example in support of your claim<br><br></div>Paolo<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Nov 14, 2017 at 9:22 AM, Malte Sachs <span dir="ltr"><<a href="mailto:malte.sachs@chemie.uni-marburg.de" target="_blank">malte.sachs@chemie.uni-marburg.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Hello everyone,</p>
<p>I have started to test scf calculations with HSE hybrid
functionals using QE 6.2 which should have the ACE algorithm by
default. As far as I understand the papers concerning ACE right
(e.g. <cite>J. Chem. Theory Comput.</cite>, <span class="m_-3182077209335396958citation_year">2016</span>, <span class="m_-3182077209335396958citation_volume">12</span> (5), pp 2242–2249) the ACE
operator has to be constructed once which takes a lot of time and
will be reused for the following inner SCF iterations which should
take less time. I find this behavior performing Gamma-Only
calculations. However, using multiple k-points each ACE step takes
a similar amount of time. Why does this happen? Do I misunderstand
something?</p>
<p>Best regards,</p>
<p>Malte<span class="HOEnZb"><font color="#888888"><br>
</font></span></p><span class="HOEnZb"><font color="#888888">
<br>
<pre class="m_-3182077209335396958moz-signature" cols="72">--
Malte Sachs
Anorganische Chemie, Fluorchemie
Philipps-Universität Marburg
Hans-Meerwein-Straße 4
35032 Marburg (Paketpost: 35043 Marburg)
Tel.: <a href="tel:+49%206421%2028" value="+49642128" target="_blank">+49 (0)6421 28</a> - 25 68 0
<a class="m_-3182077209335396958moz-txt-link-freetext" href="http://www.uni-marburg.de/fb15/ag-kraus/" target="_blank">http://www.uni-marburg.de/<wbr>fb15/ag-kraus/</a>
</pre>
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