<div dir="ltr"><div>Likely, you shouldn't worry: the warning is triggered by relatively small differences. The real-space algorithm has a better scaling with the size of the unit cell, but for not-so-large unit cells the advantage with respect to the default G-space algorithm is modest.<br><br></div>Paolo<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jan 3, 2018 at 10:09 AM, Eduardo Menendez <span dir="ltr"><<a href="mailto:eariel99@gmail.com" target="_blank">eariel99@gmail.com</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><div>Hi, <br>I am doing a slab calculation with tqr=.true., and I got this message in the output of PWSCF<br> Message from routine real_space_q:<br> integrated real space q too different from target q<br> 1 1 1 0 0 1 0.24297765 0.24295980<br> 1 1 2 0 0 2 0.21802390 0.21800371<br> 1 2 2 0 0 3 0.17542597 0.17540267</div><div> ...</div><div><br></div>Should I worry about it? I don not find significant differences in the total energy and the forces seting tqr=.false. , but also not on CPU time. <br><br></div>Thank you<br><div><div><br clear="all"><div><div class="m_5213744283846876389gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">
<div>Eduardo Menendez Proupin<br></div></div></div></div></div></div></div></div></div></div></div></div></div>
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